Group Title: Citrus Station mimeo report - Florida Citrus Experiment Station ; 57-7
Title: Comparison of characteristics of commercial frozen orange concentrates collected during two citrus seasons
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 Material Information
Title: Comparison of characteristics of commercial frozen orange concentrates collected during two citrus seasons
Series Title: Citrus Station mimeo report
Physical Description: 2, 27 leaves : ; 28 cm.
Language: English
Creator: Wenzel, F. W
Citrus Experiment Station (Lake Alfred, Fla.)
Florida Citrus Commission
Publisher: Florida Citrus Experiment Station :
Florida Citrus Commission
Place of Publication: Lake Alfred FL
Publication Date: 1956
 Subjects
Subject: Frozen concentrated orange juice -- Quality -- Florida   ( lcsh )
Genre: government publication (state, provincial, terriorial, dependent)   ( marcgt )
non-fiction   ( marcgt )
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Statement of Responsibility: F.W. Wenzel ... et al..
General Note: Caption title.
General Note: "October 11, 1956."
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Bibliographic ID: UF00072384
Volume ID: VID00001
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 74906751

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Citrus Station Mimeo Report 57-7
October 11, 1956

Comparison of Characteristics of Commercial Frozen Orange Concentrates
Collected during Two Citrus Seasons

F. W. Wenzel, R. L. Huggart, A. H. Rouse, C. D. Atkins, E. C. Hill,
E. L. Moore, R. W. Olsen, R. Patrick and R. W. Barron

Samples of frozen orange concentrates were obtained from all of the commercial
plants in Florida during two citrus seasons so that most of the chemical, physical,
microbiological and organoleptic characteristics of these products could be deter-
mined. A total of 436 samples were collected from 24 plants and these have been
analyzed and extensively examined. The results have been summarized and are pre-
sented in the 33 tables of data that are included in this report.

With the assistance of personnel of the U.S.D.A. Agricultural Marketing
Service, 221 samples of frozen orange concentrates were collected during the
1953-54 season and 215 samples during the 1954-55 season. These products were
obtained semi-monthly from the various commercial plants.

Data accumulated from the analysis and examination of the 436 samples are
listed in tabular form so that comparison of the properties of the orange concen-
trates produced during each of the two citrus seasons may be easily made. Fre-
quency Tables 1 11, which contain data on such characteristics as Brix, pH,
ascorbic acid, pectinesterase activity and many others, show exactly the percent-
age of the total number of samples for each season that had values which fell
within different ranges of values for each characteristic. Minimum, maximum and
average values for all of the chemical, physical and microbiological properties
determined in all of the samples from each plant are given in Tables 12 28.
Results of the evaluation of the flavor of the samples by a taste panel are pre-
sented in Tables 29A and 29B. The relationship of the date of packing of the
frozen orange concentrates to certain characteristics, such as color or ascorbic
acid content, may be seen from the examination of data in Tables 30 33.

A detailed discussion and interpretation of all of the data obtained during
this investigation of the properties of Florida frozen concentrated orange juices
is not presented in this report, but will be prepared for publication at a later
date.

Following is a list of previous reports and publications that contain data
and discussions of results obtained from the examination of the 221 samples of
commercial frozen orange concentrates that were collected during the 1953-54
season.

(a) Chemical and Physical Qualities of Commercial Samples of Frozen Concen-
trated Orange Juices. A. H. Rouse, C. D. Atkins, E. L. Moore and R. W. Olsen.
Citrus Station Mimeo Report 55-6. Fifth Annual Citrus Processors Meeting,
Florida Citrus Experiment Station, Lake Alfred., October 12, 1954.

(b) Measurement of Color of Citrus Products. R. L. Huggart and F. W. Wenzel.
Citrus Station Mimeo Report 55-3. Fifth Annual Citrus Processors Meeting, Florida
Citrus Experiment Station, Lake Alfred. October 12,1954.

Florida Citrus Experiment Station
and Florida Citrus Commission,
Lake Alfred, Florida.
709z 10/11/56 FWW







-2-


(c) Results of Examination of Commercial Frozen Concentrated Orange Juices
Collected during the 1953-54 Season. Miscellaneous Reports. Sixth Annual
Citrus Processors Meeting, Florida Citrus Experiment Station, Lake Alfred.
October 4, 1955.

(d) The Flavor of Commercial Samples of Frozen Concentrated Orange Juices.
F. W. Wenzel and R. W. Olsen. Miscellaneous Reports. Sixth Annual Citrus
Processors Meeting, Florida Citrus Experiment Station, Lake Alfred. October 4,
1955.

(e) Measurement and Control of Color of Orange Concentrate. R. L. Huggart
and F. W. Wenzel. Proc. Fla. State Horticultural Society 67, 210-216 (1954).

(f) Pectinesterase and Pectin in Commercial Citrus Juices as Determined by
Methods Used at the Citrus Experiment Station. A. H. Rouse and C. D. Atkins.
Fla. Agr. Exp. Sta. Bul. 570: 1-19. 1955.

It should also be mentioned that the data in the paper, "Stability of Frozen
Concentrated Orange Juices with Different Levels of Pectin and Pectinesterase
Activity" by A. H. Rouse, C. D. Atkins and E. L. Moore, were obtained using some
of the commercial frozen orange concentrates that were collected during the 1954-
55 season. This paper is Citrus Station Mimeo Report 57-5.


Acknowledgments

Thanks are extended to the 24 commercial frozen citrus concentrate plants
that supplied all of the products used in this investigation. The fact that
all of the plants in Florida producing concentrate contributed samples is indica-
tive of the cooperative spirit that exists in this industry.

The evaluation of the flavor of the frozen orange concentrates would have
been impossible without the assistance of the taste panel. Their help and
opinions were appreciated. The members of the taste panel were R. W. Olsen,
R. W. Wolford, Roger Patrick, R. W. Barren, E. C. Hill, S. V. Ting, M. H.Dougherty,
R. R. McNary and F. W. Wenzel.

A considerable amount of time and effort was expended by personnel of the
U.S.D.A. Agricultural Marketing Service, Winter Haven, Florida, in obtaining
the samples used in this study. Their efforts and assistance were also appreci-
ated.








Florida Citrus Experiment Station
and Florida Citrus Commission,
Lake Alfred, Florida.
709aa 10/11/56 FWW








Table 1
Frequency tables of assay values for samples of commercial frozen concentrated
orange juices collected semi-monthly during the 1953-54 and 1954-55
citrus seasons 1


o Brix Frequency % of total
280C. 1953-54 1954-55
Less than 40.9 0.0 1.9
40.9-41.4 10.0 29.3
41.5-41.7 28.2 29.7
41.8-42,0 44.5 23.7
42.1-42.3 14.1 14.0
42.4-42.6 2.3 1.4
More than 42.6 0.9 0.0





Brix/Acid Frequency % of total
ratio 1953-54 1954-55

Less than 11.9 0.5 0.5
12.0-12.9 1.8 13.0
13.0-13.9 19.1 43.2
14.0-14.9 34.1 32.5
15.0-15.9 34.5 7.0
16.0-16.9 8.6 3.3
More than 16.9 1.4 0.5


Acid as Frequency % of total
citric % 1953-54 1954-55
Less than 2.49 3.2 0.5
2.50-2.69 20.0 7.0
2.70-2.89 37.3 14.9
2.90-3.09 30.0 46.5
3.10-3.29 7.7 23.7
3.30-3.49 1.3 5.6
More than 3.49 0.5 1.8





pH of Frequency % of total
concentrate 1953-54 1954-55

3.4 1.4 0.5
3.5 20.4 15.8
3.6 57.9 46.0
3.7 19.4 31.7
3.8 0.9 5.5
3.9 0.0 0.5


Based on the examination of 220 samples for the 1953-54 season and 215
samples for the 1954-55 season.


Florida Citrus Experiment Station
and Florida Citrus Commission,
Lake Alfred, Florida,
709 10/11/56 RLH








Table 2
Frequency table of assay values for samples of commercial frozen concentrated orange juices collected
semi-monthly during the 1953-54 and 1954-55 citrus seasonsI
Hunter Color Difference Meter values for concentrates


Frequency % of total


1953-54


1954-55


HCDM
a


Frequency % of total


1953-54


1954-55


HCDM
b


Frequency % of total


1953-54


- II


Less than 16.9
16.0-16.9

17.0-17.9
18.0-18.9

19.0-19.9
20.0-20.9

21.0-21.9
22.0-22.9

23.0-23.9
24.0-24.9
25.0-25 .9

26.0-26.9
More than 26.9


1.8

5.0

12.7
15.0

13.6
12.7

15.5
8.2

5.9
3.7
3.2
1.8

0.9


0.0
0.9

6.0
10.2

11.6
9.8

11.6
16.8

15.8
11.2

2.3
2.8

1.0


More than 10.0
9.1-10.0

8.1- 9.0
7.1- 8.0

6.1- 7.0

5.1- 6.0

4.1- 5.0
3.1- 4.0

2.1- 3.0
1.1- 2.0
Less than 1.1


0.0
2.7

8.2
16.8

10.9

9.5
17.3
20.5

10.5
3.6
0.0


0.5
2.3

5.1
12.6

11.6
12.6

14.9
17.2

12.5

10.2

0.5


.1 5


More than 34.9
34.0-34.9

33.0-33.9
32.0-32.9

31.0-31.9
30.0-30.9

29.0-29.9
28.0-28.9

27.0-27.9
Less than 27.9


0.0
1.4

5.0
8.2

23.6

30.0
22.2
7.3

1.8

0.5


1954-55


1.4
11.2

28.8
33.0
16.8

6.9

1.4
0.0

0.0

0.5


Based on the examination of 220 samples
1954-55 season.


for the 1953-54 season and 215 samples for the


Florida Citrus Experiment Station and Florida Citrus Commission,
Lake Alfred, Florida. 709a 10/11/56 RLH


HCDM
Rd








Table 3
Frequency table of assay values for samples of commercial frozen concentrated orange juices collected
semi-monthly during the 1953-54 and 1954-55 citrus seasons1

Hunter Color Difference Meter values for reconstituted juices
HCDM Frequency % of total HCDM Frequency % of total HCDM Frequency % of total
Rd 1953-54 1954-55 a 1953-54 1954-55 b 1953-54 1954-55

Less than 15.9 0.5 0.0 More than -2.0 4.1 2.8 More than 30.9 0.0 2.8
15.0-15.9 2.7 0.0 -2.0 to -2.9 16.8 11.2 30.0-30.9 0.0 14.9
16.0-16.9 9.6 0.9 -3.0 to -3.9 17.3 17.2 29.0-29.9 3.6 32.5
17.0-17.9 21.8 6.1 -4.0 to -4.9 12.7 15.8 28.0-28.9 12.7 23.3
18.0-18.9 19.1 14.4 -5.0 to -5.9 27.7 23.7 27.0-27.9 44.5 20.5

19.0-19.9 15.9 16.3 -6.0 to -6.9 20.0 26.5 26.0-26.9 30.0 5.1
20.0-20.9 12.7 14.4 Less than -6.9 1.4 2.8 25.0-25.9 8.2 0.9
21.0-21.9 10.0 21.9 Less than 25.9 1.0 0.0
22.0-22.9 4.5 15.8

23.0-23.9 2.3 7.4

More than 23.9 0.9 2.8


1Based on the examination
Based on the examination


of 220 samples for the 1953-54 season and 215 samples for the 1954-55 season.


Florida Citrus Experiment Station
and Florida Citrus Commission,
Lake Alfred, Florida.
709b 10/11/56 RLE





Frequency tables of assay values for samples of commercial frozen concentrated orange
juices collected semi-monthly during the 1953-54 and 1954-55 citrus seasons.1


Table 4

Ascorbic Acid Frequency % of Total
Concentrate Reconstituted
Juice2 1953-54 1954-55
mg./100 g. mg./100 ml.

100 109 30 32 0.0 3.7

110 119 33 35 0.9 4.7

120 129 36 38 9.1 11.6

130 139 39 41 7.7 6.5

140 149 42 44 12.7 11.6

150 159 45 47 7.3 10.2

160 169 48 50 8.6 '9.8

170 179 51 53 19.1 16.3

180 189 54 56 19.6 15.8

190 199 57 59 11.4 7.0

200 209 60 62 3.6 2.3

210 219 63 65 0.0 0.5


S1 Based on the examination of 220 samples for
samples for the 1954-55 season.


the 1953-54


Table 5

Glycosides as
Hesperidin Frequency % of Total
Reconstituted Juice
mg./100 ml. 1953-54 1954-55

20 29 0.5 0.0

30 39 0.5 0.0

40 49 2.7 0.0

50 59 9.1 0.0

60 69 21.8 7.4

70 79 28.2 32.5

80 89 22.7 36.3

90 99 9.1 16.7

100 109 3.6 4.7

110 119 0.9 1.9

120 129 0.9 0.5



season and 215


2 These values were calculated.

Florida Citrus Experiment Station and Florida Citrus Commission,
Lake Alfred, Florida. 709d 10/11/56 FWJ






Frequency table of assay values for samples of commercial frozen concentrated
orange juices collected semi-monthly during the 1953-54 and 1954-55 citrus
seasons,

Table 6

Recoverable oil Frequency % of total

Concentrate Recon. juice2
ml./lOOg. % by vol. 1953-54 1954-55

Trace 0.002 Trace 0.001 5.5 0.0

0.003 0.018 0.001 0.005 43.1 7.4

0.019 0.035 0.006 0.010 41.4 41.9

0.036 0.052 0.011 0.015 7.7 43.3

0.053 0.068 0.016 0.020 1.4 6.5
0.069 0.086 0.021 0.025 0.9 0,9


IBased on the examination
for the 1954-55 season.


of 220 samples for the 1953-54 season and 215 samples


These values were calculated.


Florida Citrus Experiment Station and Florida Citrus Commission,
Lake Alfred, Florida. 709t 10/11/56 RLH.









Frequency tables of assay values for samples of commercial frozen concentrated orange juices
collected semi-monthly during the 1953-54 and 1954-55 citrus seasons


Table 7
Pectinesterase activity Frequency % of total
Concentrate 1953-54 1954-55
(PE.u.)g. soluble solids2
X 1000

0- 4 12.6 18.6
5- 9 48.0 52.6
10-14 13.1 19.1
15-19 8.2 6.0
20-24 10.8 3.2
25-29 3.6 0.5
30-34 3.2 0.0
35-44 0.5 0.0


Based on the examination of 221 samples for the 1953-54 season
2
2Soluble solids determined by refractometer at 280C.


Florida Citrus Experiment Station and Florida Citrus Commission,
Lake Alfred, Florida. 709u 10/11/56 CDA


Table 8
Pectin water soluble Frequency % of total
Reconstituted juice 1953-54 1954-55
mg./100g.

10-14 1.8 0.0
15-19 3.6 0.5
20-24 9.1 3.7
25-29 23.5 19.1
30-34 24.9 22.8
35-39 17.6 27.9
40-44 10.9 13.5
45-49 4.5 8.8
50-54 3.2 3.2
55-59 0.9 0.5


and 215 samples for the 1954-55 season.







Frequency tables
juices collected


of assay values for samples of commercial frozen concentrated orange
semi-monthly during the 1953-54 and 1954-55 citrus seasons.


Table 9


Table 10


Pulp1 Freauency-% of total
% by Vol. 1953-54 1954-55

4.5 0.4 0.0
5.0 0.9 0.0
5.5 2.3 1.4
6.0 14.9 3.7
6.5 15.4 9.3

7.0 10.4 22.3
7.5 15.8 11.2
8.0 16.3 13.6
8.5 9.0 11.6
9.0 5.0 7.0

9.5 1.8 3.3
10.0 2.3 5.6
10.5 1.8 2.3
11.0 1.4 2.3
11.5 0.9 0.9
12.0 0.9 2.3
12.5 0.4 0.9
13.0 0.0 0.9
13.5 0.0 0.9
14.0 0.0 0.5


1
Determined by centrifugal method, but
did not include floating pulp; based on
examination of 221 samples for the 1953-
54 season and 215 samples for the 1954-55
season.


Diacetyl Freauency-v of total
Value 2 1953-54 1954-55

0.1 0.0 1.4
0.2 0.9 3.7
0.3 6.8 9.3
0.4 10.0 14.9
0.5 13.7 15.8

0.6 10.4 12.5
0.7 15.4 13.5
0.8 12.3 9.3
0.9 11.4 4.6
1.0 5.9 4.2

1.1 1.8 1.9
1.2 6.4 2.8
1.3 2.3 1.9
1.4 0.45 0.9
1.6 0.45 0.0

1.7 0.0 0.5
1.8 0.45 0.9
1.9 0.0 0.9
2.6 0.45 0.0
2.7 0.45 0.0

3.1 0.0 0.5
3,2 0.0 0.5
3.3 0.45 0.0


2Diacetyl and acetyl-methyl-carbinol in
25 ml. of distillate from 300 ml. of
12 Brix reconstituted juice, expressed
as diacetyl; based on the 'examination '
of 220 samples for the 1953-54 season
and 215 samples for the 1954-55 season.


Florida Citrus Experiment Station and Florida Citrus Commission,
Lake Alfred, Florida. 709m-10/11/56-FWl








Frequency of occurrence of
concentrated orange juices


Table 11

clarification and gelatin in comnericial frozen
after storage at 40 F. or 80 F.


S__________Frequency I of total
After 72 hr. at 40" F. 195?-54 4 __1954-55
Degree of After 24 hr. After 72 hr. After 24 hr. After 48 hr. After 72 hr.
clarification 1953-54 1954-55 at 800F. at 40F at 400F. at 400F. at 40OF.

None 40.7 43.4 19.5 40.7 90.6 69.8 43.4

Slight 16.3 16.5 7.2 16.3 6.6 17.5 16.5

Definite 16.3 24.1 14.5 16.3 1.9 8.0 24.1

Extreme 26.7 16.0 58.8 2 .7 0.9 4.7 16.0



Degree of
gelation

0-Fone 49.9 76.8 57.0 49.9 99.6 90.1 76.8

1-Very slight 35.7 12.3 29.0 35.7 0.4 7.1 12.3

2-Slight 12.2 9.0 8.6 12.2 2.4 9.0

3-Semi-gel 1.8 1.9 5.0 1.3 0.4 1.9

4-Solid gel 0.4 0.4 0.4 -


1
Based on exmunination of 221 samples for the 1953-54 season and 212 samples for the 1954-55 season.
2
Clarification measured by percentage light transmission of centrifuged reconstituted juice using Lumetron 402-E
with 730 filter and 14 mi. cell. one= 0-59%; Slight= 60-69%; Definite= 70-84%; and Extreme = 65-100%.
Florida Citrus Experiment Statior and Florida Citrus- Comamission*
Lake -Alfred, Florida. 709w 10/11/56 RWO







Minimum, maximum, and average assay values for samples of commercial frozen concentrated orange juices
collected semi-monthly during the 1953-54 and 1954-55 citrus seasons
,. 1t9 from 24 Florida plants 1


o Brix 280C.
1953-54 1954-55
No. of No. of
Plant samples Min. Max. Av. samples Min. Max. Av.
1 12 41.4 42.0 41.7 7 41.3 41.8 41.7
2 9 41.1 42.2 41.9 10 41.1 41.9 41.4
3 10 41.2 42.2 41.8 8 41.6 42.1 41.8
4 11 41.6 42.0 41.8 11 41.2 42.1 41.6
5 10 41.1 41.7 41.5 1 -- 41.
6 11 41.3 42.1 41.8 12 41.3 41.7 41.5
7 10 41.4 42.1 41.8 7 41.2 42.0 41.6
8 8 41.6 42.1 41.9 9 41.3 42.5 41.E
9 12 41.4 42.1 41.7 10 41.0 41.6 41.
10 8 41.2 42.6 41.9 11 41.0 42.1 41.6

11 12 41.3 42.8 41.9 11 41.4 42.3 41.8
12 11 41.5 42.3 42.0 11 41.1 42.0 41.7
13 12 41.3 42.1 41.7 11 41.6 42.4 42.C
14 12 41.0 42.5 41.9 12 41.8 42.3 42.1
15 7 41.4 42.0 41.9 8 41.1 42.1 41.7
16 10 41.5 42.0 41.7 8 41.8 42.1 42.0
17 13 41.5 42.2 41.9 12 40.3 42.2 41.4
18 11 41.5 42.3 42.0 11 41.2 42.2 41.9
19 10 41.4 42.3 41.8 11 40.1 42.0 41.3
20 8 41.6 42.4 41.9 5 41.4 41.4 41.4
21 6 41.5 42.3 41.9 6 41.3 41.6 41.4
22 5 41.8 42.4 42.0 8 41.3 41.9 41.6
23 2 42.0 43.2 42.6 8 41.0 42.2 41.5
24 -- 7 40.6 42.1 41.4
1


Based
Florida Citrus


on the examination of 220 samples for the 1953-54
Experiment Station and Florida Citrus Commission,


Plant


Lable 1"
Total acid as anhydrous citric %
1953-54 1954-55


Min. Max. Av.


3.07
3.14
3.58
3.18
3.10
3.14
3.04
3.30
3.27
2.90

3.04
2.95
3.22
3.08
2.98
3.04
3.08
3.07
3.32
3.15
3.13
3.17
3.03


2.76
3.00
2.95
2.90
2.90
2.92
2.88
2.90
2.89
2.79

2.85
2.73
2.79
2.81
2.72
2.73
2.80
2.88
2.74
2.90
2.90
2.93
2.89


No. of
samples


samples Mm.


7
10
8
11
1
12
7
9
10
11

11
11
11
12
8
8
12
11
11
5
6
8
8
7


season and 215 samples for the 1954-55 season.
Lake Alfred, Fla. 709c 10/11/56 FWW


2.78
2.68
2.72
2.56

2.82
2.53
2.68
2.75
2.56

2.85
2.66
2.91
2.92
2.84
2.85
2.42
2.63
2.50
2.82
2.82
2.70
2.88
2.59


Max Av


3.07
3.20
3.31
3.18

3.14
3.02
3.56
3.24
3.30

3.32
3.26
3.52
3.43
3.16
3.14
3.21
3.26
3.33
3.20
3.15
3.39
3.42
3.2


No. of
samples


2.46
2.80
2.52
2.58
2.69
2.72
2.75
2.77
2.63
2.66

2.66
2.59
2.53
2.59
2.46
2.43
2.49
2.59
2.33
2.65
2.66
2.49
2.74


2.
3..
3.0
3.-
2.9
3.0
2.
3.
2.
2.

3.0
2.
3.
3.
3.-
2.
2.
2.
2.
3..
.9
1.0
.0


Min.




Minimum, =maxaEum, and average assay values for samples of commercial frozen concentrated orange juices
collected semi-monthly from 24 Florida plants during the 1953-54 and 1954-55 citrus seasons.


Table 14
Brix/Acid ratio
1953-54 1954.55
No. of No. of
Plant Samples- In. Max. Av. Samples Min. Max. Av.

1 12 13.6 16.8 15.2 7 13.5 16.1 14.3
2 9 13.4 15.0 14.0 10 12.9 15.5 13.6
3 10 11.7 16.6 14.3 8 12.6 15.3 13.9
4 11 13.2 16.2 14.4 1 13.1 16.1 13.8
5 10 13.4 15.5 14.4 1 14.2
6 11 13.4 15.2 14.3 12 13.2 14.7 13.8
7 10 13.8 15.1 14.5 7 13.7 16.5 15.2
8 8 12.7 15.2 14.5 9 11.8 15.6 13.4
9 12 12.9 15.8 14.5 10 12.8 15.1 13.9
10 8 14.5 15.7 15.0 11 12.8 16.1 14.1
11 12 13.8 15.8 14.8 1 12.5 14.6 13.9
12 11 14.2 16.3 15.4 11 12.9 15.6 14.1
13 12 13.1 16.5 15.1 11 12.0 14.4 13.2
14 12 13.6 16.3 15.0 12 12.3 14.4 13.6
15 7 13.9 17.1 15.4 8 13.3 14.5 13.7
16 10 13.8 17.2 15.4 8 13.4 14.8 14.1
17 13 13.6 16.8 15.0 12 12.9 17.2 14.2
18 11 13.7 15.8 14.6 11 12.9 15.9 14.1
19 10 12.8 17.8 15.4 11 12.6 16.4 13.9
20 8 13.3 15.8 14.5 5 12.9 14.7 13.4
21 6 13.5 15.8 14.5 6 13.2 14.9 14.1
22 5 13.2 16.9 14.3 8 12.2 15.5 13.6
23 2 14.3 15.3 14.8 8 12.0 14.5 13.6
24 7 12.6 16.1 14.4


Table 15
-Pulp- by volume2
1953-54:1 .. 195 -55
TNo of N00 f of
Plant Samples Min. Max. Av. Samples Min. ax. Av.

1 12 6.0 10.5 7.5 7 8.5 13.5 11.0
2 9 5.0 6.5 6.0 10 5.5 8.0 7.0
3 10 5.5 11.0 8.0 8 6.5 8.5 7.0
4 11 6.0 8.0 7.0 11 7.0 9.0 8.0
5 10 6.0 10.0 8.0 1 10.5
6 11 6.0 8.0 7.0 12 6.5 8.5 7.0
7 10 7.5 8.5 8.0 7 8.0 10.5 9.0
8 8 5.5 7.0 6.5 9 5.5 7.0 6.0
9 12 5.5 8.5 7.0 10 7.0 8.5 8.0
10 8 8.0 10.5 9.0 11 8.5 14.0 11.0
11 12 7.0 10.0 8.5 11 8.5 10.0 9.5
12 11 6.0 9.5 7.5 11 6.0 9.0 7.5
13 12 6.0 7.5 6.5 11 6.5 :7.5 7.0
14 12 6.5 8.5 7.5 12 6.5 10.5 8.0
15 7 7.5 10.5 9.0 8 8.0 9.0 8.5
16 10 7.0 12.0 9.0 8 8.5 13.5 10.5
17 13 6.0 8.0 6.5 12 6.0 8.5 7.5
18 11 7.0 12.5 9.5 11 8.0 11.0 9.5
19 10 4.5 7.0 6.5 U1 6.0 7.5 7.0
20 8 6.0 8.5 7.5 5 7.0 10.0 8.0
21 6 7.5 11.5 9.5 6 10.0 13.0 11.0
22 5 6.0 8.0 7.0 8 7.0 9.0 8.0
23 2 6.0 7.0 6.5 8 6.5 8.0 7.0
24 7 8.0 11.0 9.0


SBrix/Acid ratio values based on the examination of 220 samples for the 1953-54 season and 215 samples for the
1954-55 season.
2 Pulp values determined by centrifugal method, but do not include floating pulp; based on 221 samples for 1953-54
season and 215 samples for 1954-55 season.
Florida Citrus Experiment Station and Florida Citrus Commission,
Lake Alfred, Florida. 709e 10-11-56 FWW









Minimum, ..axinum, and Average assjay values for s. -ples of commercial frozen
concentrated orange juices collected sed-nionthly fraa 24 Florida plants
during the 1953-54 and 1954-55 citrus seasons.


~._ T 5Table 16__
Hunter Color Differenceo.M6ter
"Rd" value concentrate


1953-54 __ 1954-55
No. of No. of
Plant S~rples 1inin. Max. Av. Smiples in. lax. Av.
1 12 15.7 21.9 18.5 7 20.5 26.3 22.9
2 9 17.5 23.9 20.9 10 17.7 24.6 22.0
3 10 14.5 22.5 18.6 8 16.6 21.8 19.7
4 11 17.5 25.3 21.6 11 19.0 26.1 22.5
5 10 16.3 22.7 19.0 1 24.5
6 11 17.7 25.7 20.8 12 1G.7 23.0 19.6
7 10 16.8 21.3 19.1 7 18.2 23.4 21.1
8 8 17.6 22.0 19.6 9 17.9 23.2 20.0
9 12 16.5 23.2 19.3 10 19.2 26.7 21.8
10 8 17.7 26.7 22.2 11 18.5 24.6 22.2
11 12 17.6 21.7 19,8 11 18.3 23.7 213..
12 11 16.3 24.0 19.8 11 17.0 24.8 21.1
13 12 17.4 23.1 20.5 11 20.2 25.4 22.4
14 12 17.7 23.1 19.5 12 17.4 25.7 21.3
15 7 19.3 27.5 24.3 8 22.2 26.2 23.8
16 10 18.0 25.5 21.4 8 18.1 24.9 22.1
17 13 16.7 24.5 19.9 12 17.4 24.9 21.5
18 11 17.3 23.7 20.3 11 19.4 24.7 21.7
19 10 17.7 25.1 21.3 11 16.5 25.1 21.3
20 8 17.0 24.3 19.9 5 18.1 23.1 20.5
21 6 19.9 27.3 23.2 6 19.8 27.8 24.0
22 5 16.2 21.5 18.2 8 17.5 24.2 21.7
23 2 21.2 22.2 21.7 8 17.2 23.6 20.8
24 7 17.1 22.7 19.5


Based on the examination of 220
for the 1954-55 season.


samples for the 1953-54 season and 215 samples


Florida Citrus Experiment Station and Florida Citrus Cnomission.
Lake Llfred, Florida. 709g 10/11/56 RLH.


~I---_ ~Y^







minimum, maximum, and Average assay values for sa-ples of commercial frozen
concentrated orange juices collected semi-monthly from 24 Florida plants
during the 1953-54 and 1954-55 citrus seasons.

Table 17

Hunter Color Difference Meter
"a" value concentrate

1953-54 1954--55
No, of No. of
Plant Samples Min. hax. Av. Samples iin. lax, Av,
1 12 3.3 8.2 5.7 7 2,6 8.3 52.
2 9 2.3 7.4 4.5 10 1.J 6,1 3,8
3 10 1.2 6.0 3.8 8 1.1 516 3,1
4 11 2.7 7.8 5.6 11 1.3 8.4 4,3
5 10 3v4 9.1 5.6 1 3,2
6 11 3.3 7.7 5.5 12 2.5 7.6 4,8
7 10 3.4 8.3 5,6 7 3.1 7.7 5,4
8 8 1.9 7.6 4.5 9 1.5 7,5 44,
9 12 3.5 9.1 6.3 10 2,9 9.5 5,8
10 8 3.7 10.0 5.9 11 2.9 8,5 5o4
il 12 4.2 7.6 5.7 11 3.5 7.5 5.2
12 11 1.6 7.1 4.3 11 1.2 7.5 4o2
13 12 2.5 8.0 5.4 11 2.0 7.8 4.6
14 12 2.2 8.4 5.1 12 1.6 8.5 4.9
15 7 1o7 7.5 4.2 8 2.6 6,4 4.6
16 0 3.9 8.8 6.3 8 3.1 8.4 5.3
17 13 1.9 7.5 4.6 12 0.5 8,0 4.0
18 11 3.7 9.7 6.3 11 3.5 10.5 6,8
19 10 3.0 7.9 4.9 11 1.5 7.5 4.3
20 8 2,2 7.9 4.8 5 1.8 5.5 3.9

21 6 3.4 9.1 6.0 6 4.0 9.1 6.3
22 5 5.7 8.2 7.4 8 2.4 8.2 4.9
23 2 4.4 4.4 4.4 8 1.9 9.7 5.4
24 7 3.4 7.8 6.1


IBased on the examination
for the 1954-55 season.


of 220 samples for the 1953-54 season and 215 samples


Florida Citrus Experiment Station and Florida Citrus Commission,
Lake Alfred, Florida. 709h 10/11/56 RLH








Minimum, aiaximum, end Average assay values for samples of commercial frozen
concentrated orange juices collected se:ii-monthly from 24 Florida plants
during the 1953-54 and 1954-55 citrus seasons.
Table 18

Hunter Color Difference ieter
"b" value concentrate
1953-54 1954-55

No. Of No. of
Plant Samples Min. Max. Av. Samples bin. -ax. Av.

1 12 27.5 31.7 30.0 7 31.7 34.6 33.3
2 9 29.4 33.1 31.0 10 30.0 34.6 32.5
3 10 27.2 31.6 29.7 8 26.0 32.2 30.8
4 11 29.5 33.4 31.4 11 30,6 34.1 32.9
5 10 27.6 32.0 29.7 1 34.4

6 11 28.0 32.7 30.8 12 30.6 33.6 32.6
7 10 28.9 30.5 29.9 7 31.2 33.5 32.6
8 8 28.7 31.3 30.1 9 30.5 34.2 32.4
9 12 28.7 32.3 30.2 10 31.3 34.0 32.9
10 8 28.7 34.0 30.8 11 31.6 35.5 32.7
11 12 28.7 31.5 30.1 11 30.9 34.0 32.1
12 11 28.8 32.6 30.6 11 29.1 34.6 32.3
13 12 29.3 32.3 30.8 11 31.1 34.2 32.8
14 12 29.6 34.0 30.7 12 29.9 33.4 31.7
15 7 31.0 34.1 32.5 8 32.1 34.8 33.6
16 10 29.9 33.3 31.3 8 32.0 34.4 33.1
17 13 28.9 32.8 30.6 12 30.7 34.7 32.5
18 11 28.9 32.3 30.6 11 31.5 34.5 33.2
19 10 29.7 32.8 30.9 11 30.3 33.8 32.3
20 8 28.9 32,6 30.5 5 30.8 33.9 32.5
21 6 90.0 33.9 31.8 6 32.9 35.5 34.1
22 5 28.4 31.5 29.8 8 31.6 34.2 33.0
23 2 31.0 31.1 31.1 8 31.4 33.9 33.1
24 7 29.6 33.4 31.8


IBased on the examination of 220
for the 1954-55 season.


samples for the 1953-54 season and 215 samples


Florida Citrus Experiment Station and Florida Citrus Commission,
Lake Alfred, Florida. 709i 10/11/56 RLH








Iinimura, haximum, and Aver:age assay values for samples of commercial frozen
concentrated orange juices collected semi-monthly from 24 Florida plants
during the 1953-54 and 1954-55 citrus seasons.

Table 19

Hunter Color Difference Neter
"Rd" value reconstituted juice

1953-54 1954-55

No. of No. of
Plant Sznples iin. hax. Av. Samples lin. : ax. Av

1 12 15.5 17.5 16.5 7 20.0 24.8 22.2
2 9 17.5 21.5 19.6 10 18.3 23.7 21.3
3 10 14.0 20.3 17.2 8 16.8 22.5 19.2
4 11 18.0 23.4 20.6 11 19.3 24.3 21.8
5 10 16.6 19.5 17.3 1 22.0
6 11 17.1 20.6 19.2 12 18.8 21.9 20.2
7 10 16.6 18.8 17.4 7 18.0 22.2 20.4
8 8 18.1 20.6 10.8 9 18.4 22.3 20.4
9 12 17.1 20.0 18.4 10 17.8 21.7 19.8
10 8 17.0 20.8 19.0 11 18.4 22.8 20.4

11 12 17.6 20.4 18.9 11 19.4 21.9 20.7
12 11 16.3 23.9 19.7 11 17.5 22.7 20,5
13 12 17.1 21.5 19.3 11 19.9 24.0 21.6
14 12 17.5 20.8 18.7 12 17.9 23.8 21.0
15 7 19.0 24.0 22.2 8 21.2 23.4 22.0

16 10 17.0 21.8 19.3 8 18.3 22.9 21.0
17 13 17.4 22.2 19.7 12 18.0 24.4 21.4
18 11 17.6 21.0 19.2 11 17.1 22.9 20.3
19 10 17.7 23.4 20.2 11 16.9 23.9 20.5
20 8 17.4 22.3 19.7 5 18.7 22.7 20.8

21 6 17.4 21.9 19.7 6 17.7 21.8 20.0
22 5 16.0 19.6 17.3 8 17.0 23.3 20.1
23 2 20.7 21.2 21.0 8 17.3 22.4 20.2
24 7 17.2 20.6 19.0


Based


on the examination of 220 samples for the 1953-54 season and 215 s~::ples


for the 1954-55 season.

Florida Gitrus Experimaent Station and c 1orida Citrus Commission,
Lake Alfred, Florida. 709j 10/11/56 RIH







Minimum, Maximum, and Average assay values for samples of commercial frozen
concentrated orange juices collected seii-monthly from 24 Florida plants
during the 1953-5& and 1954-55 citrus seasons.

Table 20

Hunter Color Difference ieter
'_"a" value reconstituted juice
1953-54 1954-55

No. of No. of
Plant Samples Min. hax. Av. Scples Min. Iax. Av.

1 12 -6.2 -2.6 -4.6 7 -6.4 -3.1 -4.9
2 9 -6.6 -2.8 -5.1 10 -7.3 -4.1 -5.7
3 10 -7.1 -3.4 -5.5 8 -6.7 -4.5 -5.7
4 11 -6.2 -2.7 -4.4 11 -6.8 -2.6 -5.1
5 10 -6.3 -2.6 -4.5 1 -5.8

6 11 -6.0 -2.6 -4.4 12 -6.1 -3.1 -4.8
7 10 -6.3 -2.8 -4.4 7 -5.8 -2.6 -4.5
8 8 -6.5 -3.5 -5.1 9 -6.9 -2.8 -5.0
9 12 -6.0 -1.7 -3.U 10 -6.1 -1.6 -4.4
10 8 -5.8 -1.0 -4.1 11 -6.2 -2.5 -4.4
11 12 -5.3 -2.4 -4.0 11 -5.9 -2.7 -4.4
12 11 -7.1 -3.1 -5.2 11 -7.4 -2.5 -5.6
13 12 -6.2 -2.4 -4.5 11 -6.9 -3.1 -4.9
14 12 -6.6 -2.2 -4.7 12 -6.5 -2.0 -4.6
15 7 -6.7 -3.2 -5.5 8 -6.5 -3.6 -5.1
16 io -5.5 -1.7 -3.7 8 -5.9 -2.0 -4.5
17 13 -6.6 -2.8 -4.7 12 -7.2 -2.3 -5.2
18 11 -5.7 -1.2 -3.6 11 -5.9 -0.5 -3.5
19 10 -6.5 -2.4 -4.7 11 -6.9 -1.9 -5.0
20 8 -6.5 -2.5 -4.7 5 -6.9 -4.3 -5.7

21 6 -5.7 -2.2 -4.1 6 -5.8 -2.2 -4.3
22 5 -4.2 -2.5 -3.0 8 -6.4 -2.6 -5.0
23 2 -5.3 -5.2 -5.3 8 -7.1 -1.1 -4.3
24 7 -5.8 -2.4 -3.7


IBased on the examination of 220
for the 1954-55 season.


samples for the 1953-54 season and 215 Sraples


Florida Citrus Experiment Station and Florida Citrus Con mission ,
Lake Llfred, Florida. 709k 10/11/56 RLH







minimum, Naximun, and Average assay values for samples of commercial frozen
concentrated orange juices collected semi-n.onthly frar 24 Florida plants
during the 1953-54 and 1954-.5 citrus seasons.

Table 21

Hunter Color Difference Neter
"b" value reconstituted juice

1953-54 1954-55

No. of No. of
Plent Samples Min. Max. Av. Samples Min. Max. -v.

1 12 25.1 27.2 26.1 7 28.1 30.3 29.5
2 9 26.4 29.0 27.4 10 26.5 31.3 29.2
3 10 24.7 27.0 26.0 8 26.1 28.5 27.3
4 11 27.5 29.2 2G.5 11 27.2 30.8 29.5
5 10 25.1 27.2 26.2 1 28.6
6 11 26.3 27.3 27.0 12 25.3 30.6 26.6
7 10 25.1 26.9 26.1 7 26.5 29.5 28.5
8 8 26.1 27.1 26.7 9 26.7 30.1 23.4
9 12 26.0 27.9 27.1 10 26.9 29.4 28.0
10 8 26.6 27.9 27.1 11 26.8 29.5 28.3

11 12 23.2 27.5 26.3 11 26.7 29.8 28.6
12 11 26.8 29.0 20.0 11 27.2 31.2 29.2
13 12 26.9 28.3 27.6 11 27.8 31.3 29.4
14 12 26.0 28.6 27.4 12 27.5 30.1 29.1
15 7 27.8 29.3 28.6 8 27.4 31.3 29.7
16 10 26.5 28.2 27.4 8 27.7 30.2 29.2
17 13 26.1 28.4 27.7 12 26.1 30.3 28.8
18 11 26.6 28.2 27.4 11 27.4 30.7 28.8
19 10 26.6 28.1 27.3 11 27.0 29.9 28.3
20 8 26.9 28.2 27.6 5 27.2 30.7 29.2
21 6 26.4 27.8 27.2 6 27.1 29.9 28.6
22 5 25.8 27.8 26.7 8 27.5 29.4 28.5
23 2 27.3 28.2 27.8 8 28.3 30.2 29.2
24 7 27.6 29.5 28.6
I______________________


1Based on the exctaination of 220
for the 1954-55 season.


sonples for the 1953-54 season and 215 samples


Florida Citrus Experiment Station and Florida Citrus Conmmission,
Leke Alfred, Florida. 7091 10/11/56 RLH




collect d semi-monthly from Florida ants during the 1953-54 and 1954-55 citrus seasons


Table 22

Ascorbic acid in concentra esl-mg./lOO0. .Ascorbic acid in reconstituted juices2mg./100 ml.

1953-54 19U.1-55 1955A 1954-55
No. of No. of No. of No. of
Plant Samples nin, Max. Av. Samples Min. Max. Av. Samples 1in. Max. Av. Samples Ein. xax. Av.

1 12 122 187 157 7 124 195 168 12 36 56 47 7 37 58 50
2 9 132 197 170 10 127 190 166 9 39 59 50 10 38 56 49
3 10 125 200 169 8 130 206 173 10 37 59 50 8 39 61 51
4 11 132 202 168 11 124 189 165 11 39 60 50 11 37 56 49
5 10 114 193 161 1 178 10 34 57 48 1 53
6 11 125 191 169 12 128 184 159 11 37 57 50 12 38 55 47
7 10 132 197 170 7 122 192 163 10 39 59 50 7 36 57 48
8 8 151 192 172 9 130 193 168 8 45 57 51 9 39 57 50
9 12 120 193 160 10 116 191 159 12 36 57 48 10 34 57 47
10 8 121 204 169 11 118 196 162 8 36 61 50 11 35 58 48
11 12 139 202 168 31 135 188 169 12 41 60 50 11 40 56 50
12 11 123 196 160 11 129 203 170 11 37 58 48 11 38 60 51
13 12 128 199 164 11 141 211 171 12 38 59 49 11 42 63 51
14 12 120 194 159 12 118 184 158 12 36 58 47 12 35 55 47
15 7 140 196 179 8 126 196 160 7 42 58 53 8 37 58 47
16 10 120 190 160 8 116 167 1V-S 10 36 56 48 8 34 50 42
17 13 122 206 165 12 103 182 146 13 36 61 49 12 31 54 43
18 11 119 191 159 11 104 191 145 11 35 57 47 11 31 57 43
19 10 135 201 172 11 100 202 155 10 40 60 51 11 30 60 46
20 8 146 194 175 5 119 173 146 8 43 58 52 5 35 51 43
21 6 128 198 170 6 107 169 139 6 38 59 50 6 32 50 41
22 5 128 179 149 8 122 166 148 5 38 53 44 8 36 49 44
23 2 166 168 167 8 112 164 144 2 49 50 50 8 33 49 43
24 7 109 170 136 7 32 50 40
1 Based on the examination of 220 samples for the 1953-54 season and 215 samples for the 1954-55 season.
2These values were calculated.

1lorida Citrus Experiment Station and Florida Citrus Commission,
ake Alfred, Florida, 709f 10/11/56 -RLH





Minimum, maximum, and average assay values for samples of commercial frozen concentrated orange juices
collected semi-monthly from 24 Florida plants during the 1953-54 and 1954-55 citrus seasons,
Table 23 .
Recoverable oilI Recoverable oil
Concentrate ml./100g. Reconstituted juice % by volume2

S1953-54 .1954-55 1953-54 1954-55
No, of No. of No. of No. of
Plant Samples n. Av. Samples in. Av. Sales K es fin Max. Av. Samples ,ian. M ax. Av.
1 12 trace .025 .013 7 .031 .075 .047 12 trace .007 .004 7 .009 .022 .014
2 9 trace .028 .020 10 .029 .056 .041 9 trace .008 .006 10 .008 .017 .012
3 10 trace .018 .008 8 .003 .019 .011 10 trace .005 .002 8 4001 .006 .003
4 11 .003 .033 .016 11 .019 .044 .027 11 .001 .010 .005 11 .006 .013 .008
5 10 .003 .028 ,018 1 .019 10 ,001 .008 .005 1 .006
6 11 trace .025 .015 12 .021 .044 .029 U. trace .007 .004 12 .006 .013 .009
7 10 .003 .025 .013 7 .025 ,040 .034 10 .001 .00' .003 7 .009 .012 .011
8 8 trace .028 .017 9 .025 .044 .034 8 trace 1008 .005 9 .007 .613 .010
9 12 .003 .038 .019 10 .019 .036 0b38 12 .001 .011 .006 10 .006 011 .011
10 8 .003 .038 .021 11 .019 .046 .027 8 .001 .011 .006 11 .005 .014 .008
11 12 trace .035 .017 11 .009 .046 .033 12 trace ,010 .005 11 .003 .014 .010
12 11 .003 .030 .022 11 .025 .049 .036 11 ,001 .009 .007 11 .007 .013 .010
13 12 .005 .035 .020 11 .025 .063 .042 12 .001 .010 .006 11 .008 .019 .012
14 12 .020 ,070 .042 12 .028 .084 .044 12 ,006 .027 .013 12 .008 .025 .013
15 7 .005 .038 .024 8 .010 .063 .046 7 .001 .011 .007 8 .003 .019 .014
16 10 .010 .050 .032 8 .028 .063 .054 10 .003 .015 .010 8 .008 .019 .016
17 13 trace .045 .021 12 .022 .044 .034 13 trace .013 .006 12 .007 .013 .010
18 11 .010 .045 .024 11 .019 .049 .036 11 .003 .013 .007 11 .006 .014 .011
19 10 trace .030 .016 11 .013 .040 .028 10 trace .009 .005 11 .004 .012 .008
20 8 trace .055 .024 5 .019 .052 .043 8 trace .016 .007 5 .006 .015 .013
21 6 .010 .038 .025 6 ,037 .056 .045 6 .003 .011 007 6 .011 .017 .013
22 5 .003 .025 .014 8 .013 .049 .035 5 .001 .007 .004 8 .004 .015 .011
23 2 .005 .038 .022 8 .019 .047 .031 2 .001 ,011 .006 8 .005 .014 .009
24 7 .031 .042 .036 7 .009 .013 .011
1 Based on the examination of 220 samples for the 1953-54 season and 215 samples for the 1954-55 season.
2 These values ere calculated
These values were calculated,


Florida Citrus Experiment Station and Florida Citrus Commission,
lake Alfred, Florida, 7090 10/11/56 RLH






Minimum, maximum, and average assay values for samples of commercial frozen concentrated orange juices
collected semi-monthly from 24 Florida plants during the 1953-54 and 1954-55 citrus seasons.


Table 24 .
Diacetyl value p.p.m.

1953-54 1954-55
No. of No of
Plant Samples Min. Max. Av. Samples -iSn. Max. Av.

1 12 0.3 1.3 0.9 7 0.2 1.1 0.6
2 9 0.2 1.0 0.6 10 0.2 1.2 0.5
3 10 0.3 1.2 0.7 8 0.3 0.8 0.5
4 11 0.4 2.7 0.9 11 0.3 3.1 0.8
5 10 0.5 1.0 0.7 1 0.5
6 11 0.3 1.0 0.6 12 0.1 1.9 0.6
7 10 0.5 1.4 1.0 7 0.3 1.9 0.9
8 8 0.3 0.9 0.6 9 0.3 1.8 0.7
9 12 0.2 1.0 0.6 10 0.3 1.0 0.7
10 8 0.3 0.9 0.5 11 0.4 0.9 0.6
11 12 0.3 2.6 1.0 11 0.5 1.0 0.7
12 11 0.5 3.3 1.2 11 0.2 1.2 0.7
13 12 0.3 0.9 0.7 11 0.4 0.8 0.6
14 12 0.4 0.9 0.6 12 0.3 1.1 0.6
15 7 0.3 1.2 0.7 8 0.2 0.6 0.6
16 10 0.4 1.2 0.7 8 0.1 1.0 0.6
17 13 0.5 1.2 0.8 12 0.4 1.2 0.6
18 11 0.3 1.3 0.8 11 0.4 1.7 0.8
19 10 0.3 1.0 0.6 11 0.3 3.2 0.8
20 8 0.4 1.0 0.7 5 0.2 0.6 0.4
21 6 0.4 0.8 0.6 6 0.4 1.0 0.6
22 5 0.5 1.2 1.0 8 0.2 1.3 0.7
23 2 0.7 0.7 0.7 8 0.3 1.8 0.9
24 7 0.3 1.2 0.7


Table 25
Glycosides2 as hesperidin
Reconstituted juice mg./100 ml.

1953.-54- 1954-55
No. of No. of
Plant Samples Min. Max. Av. Samples Kin. Max. Av.

1 12 52 68 62 7 78 101 87
2 9 68 84 78 10 64 91 79
3 10 40 84 66 8 63 81 72
4 11 76 120 99 11 89 120 99
5 10 40 80 66 1 89
6 11 64 89 78 12 75 93 83
7 10 56 77 65 7 79 96 85
8 8 59 80 69 9 61 84 74
9 12 36 80 68 10 60 75 71
10 8 64 89 77 11 75 93 82
11 12 52 84 73 11 64 88 78
12 11 28 116 83 11 76 94 84
13 12 48 84 72 11 73 103 86
14 12 45 77 66 12 73 111 87
15 7 72 113 98 8 89 113 102
16 10 48 84 75 8 72 86 81
17 13 68 92 83 12 68 101 85
18 11 64 84 72 11 73 98 86
19 10 56 104 85 11 61 103 81
20 8 68 96 86 5 81 98 90
21 6 59 97 79 6 81 107 92
22 5 48 80 71 8 63 91 78
23 2 80 89 85 8 75 98 85
24 7 64 89 73


1 Diacetyl and acetyl-methyl-carbinol in 25 ml. of distillate from 300 ml. of 12' Brix reconstituted juice, expressed
as diacetyl.
1'2Based on the examination of 220 samples for the 1953-54 season and 215 samples for the 1954-55 season.

Florida Citrus Experiment Station and Florida Citrus Commission,
Lake Alfred, Florida. 709n 10/11/56 FWW





minimum, maximum, and average assay values for samples of ccmie-rcial frozen concentrated orange juices
collected semi-monthly from 24 Florida plants during the 1953-51+ and 1954-55 citrus seasons.


Table 26
Pectinesterase activity
Concentrate-(PE.u.)g. soluble solids X 1000
1953-54 1954-55

No. of No. of
Plant Samples En. hax. Av. Samples IKin. Max. Av.
1 12 18.7 31.4 25.2 7 11.2 18.5 14.6
2 9 4.8 6.4 5.6 10 6.1 9.0 6.9
3 10 .7.0 22.7 17.3 8 5.6 21.7 14.3
4 11 7.1 12.9 8.8 .11 3.1 6.3 4.3
5 10 16.7 25.9 21.3 1 17.7
6 11 4.3 9.8 7.5 12 4.8 14.0 8.2
7 10 9.1 32.4 24.8 7 14.5 21.5 18.2
8 8 5.2 15.2 7.9 9 4.7 11.3 8.6
9 12 4.9 22.7 8.9 10 8.2 17.2 12.7
10 8 4.0 8.5 5.6 11 3.5 6.7 4.6
11 12 3.1 11.3 6.0 11 1.9 9.0 3.7
12 11 5.3 18.5 10.1 11 4.0 12.1 7.4
13 12 4.0 8.5 6.3 11 4.3 8.0 5.7
14 12 5.4 28.9 17.1 12 3.7 6.4 4.9
15 7 4.9 14.5 9.8 8 4.1 11.3 6.5
16 11 6.0 15.9 11.3 8 5.8 12.3 8.6
17 13 3.3 10.0 6.0 12 5.3 10.8 7.5
18 11 5.5 30.2 16.1 11 3.8 17.4 9.2
19 10 4.5 13.9 7.6 11 4.2 14.1 8.3
20 8 2.9 9.5 5.8 5 3.3 5.6 4.3
21 6 6.3 15.9 10.6 6 7.2 13.0 10.7
22 5 4.8 17.5 10.0 8 6.7 11.3 8.7
23 2 5.1 12.1 8.6 8 .3.2 11.2 5.9
24 _______ 7 4.5 24.7. 9.8


ABased on the examination of 201 sa -:les for the 1953
2Soluble solids determined by refractometer at 28 C.


No. of
Plant Saples


Table 2Q
Pectin-water soluble
Reconstituted juice-mr./00g.
1953-54 1954-55


No. of
Sarples


Min. Max. Av


1 12. 11.6 26.4 21.5 7 34 46 39
2 9 23.2 30.9 27.2 10 22 34 29
3 10 13.6 32.9 21.3 8 19 30 26
4 11 27.5 52.7 39.1 11 33 46 40
5 10 21.3 30.6 26.4 1 45


6
7
8
9
10


29.2
14.4
21.3
28.1
33.4


33.4
22.4
27.5
18.4
38.5


32.0
18.1
30.3
24.1
28.9


42.0
32.0
29 .8
41.7
47.1


34.0
27.5
26.6
34.3
40.8


40.8 38.3
47.1 34.0
36.0 31.7
33.2 27.5
51.3 43.7


54.4
40.2
57.5
38.5
45.1


43.4
32.3
40.5
31.5
35.7


52
4
5
3.
4


21 6 36.8 59.5 47.1 6 40 5
22 5 22.1 38.8 28.3 8 23 3
23 2 31.2 31.2 31.2 8 27 3
24 __ 7 3 4


-54 season and 215 samples for the 1954-55 season.


Florida Citrus Experiment Station and Florida Citrus Commission,
Lake Alfred, Florida. 709p 10/11/56 IHR


m ml I II


.


c-


, .


k4in. 2ax. A-v,






sdmum, maximum, and average assay values for sa::ples of commercial frozen concentrated orange juices collected
semi-monthly from 24 Florida plants during the 1953-54 and 1954-55 citrus seasons.
Table 28
R ate count per ml. of reconstituted juice Lultiply values by 1000
Orange serum agar pH 5.6 iDextrose agar pH 7.0
1953-54 1954-55 1953-54 1954-55
No. of No. of No. of No. of
Plant Samples Lin. Max Av. Samples Min. Iiax. Av. Samples 1in. lax. Av. Samples Lin. hax. Av.
1 12 4.5 47.0 21.2 7 1.1 46.5 12.2 12 3.0 56.0 23.1 7 0.7 44.5 13.0
2 9 0.2 13.0 3.7 8 0.6 31.0 5.4 9 1.3 9.4 3.3 8 0.8 23.0 6.9
3 10 2.0 59.0 13.7 5 0.4 15.0 7.5 10 1.5 60.0 14.6 5 0.3 29.3 12.3
4 11 0.2 15.6 2.9 8 0.2 2.1 1.2 11 0.3 15.2 2.9 8 0.5 2.6 1.1
5 10 3.9 43.0 13.8 1 1.2 10 3.6 52.0 15.51 1 0.7
6 11 0.3 8.3 2.8 7 0.2 100.0 19.9 11 0.1 10.9 3.0 7 0.2 110.5 25.8
7 10 6.0 66.0 21.6 6 0.6 7.1 2.0 10 4.7 59.0 18.9 6 0.5 9.9 3.6
8 7 0.0 7.8 3.2 8 0.8 110.0 17.7 7 0.1 12.0 3.7i 8 1.2 92.5 16.5
9 11 0.5 25.0 4.2 10 0.1 6.5 2.1 11 0.3 22.0 4.5 10 0.3 8.6 3.1
10 7 0.4 2.3 1.0 9 0.2 3.6 1.4 7 0.2 2.0 ..1. 9 0.3 3.7 1.8
S11 12 1.6 54.0 11.4 10' 0.3 34.5 11.6 12 1.6 64.0 11.6 10 1.1 35.5 .2.4
12 11 0.0 59.0 10.0 1 9 0.3 117.0 19.9 11 0.4 40.0 8.8 9 0.5 93.0 18.3
13 12 0.6 110.0 28.4 1 8 0.3 8.7 3.1 12 0.6 88.0 27.7 8 0.4 8.4 3.3
14 12 0.7 77.0 9.6 9 0.4 8.0 2.8 12 0.5 63.0 8.1 9 0.3 7.0 2.7
15 6 0.1 12.5 2.9 6 0.1 8.3 1.7 6 0.1 11.3 3.1 6 0.2 8.2 1.7
16 10 0.0 70.0 9.9 7 1.1 14.5 4.0 10 0.4 70.0 10.1 7 1.1 16.5 4.7
17 13 0.1 43.0 6.8 10 0.4 40.5 6.4 13 0.2 47.0 8.3 10 0.3 301.0 32.8
18 11 0.0 27.0 5.0 10 0.4 14.5 4.0 11 0.3 17.0 4.4 10 0.3 13.1 3.9
19 10 0.7 14.8 7.9 I 9 0.2 80.5 18.5 10 0.2 20.6 6.8 9 0.5 100.0 20.3
20 8 0.1 5.8 1.9 5 0.0 7.4 1.7 8 0.2 6.4 1.7 5 0.2 7.9 1.9
21 6 0.2 1.0 0.6 I 6 0.9 3.4 2.0 6 0.0 2.1 0.7 6 1.3 5.7 3.1
22 5 0.3 16.4 6.1 7 0.0 24.0 7.6 5 0.4 18.8 7.6 7 0.2 27.0 7.8
23 2 0.4 1.6 1.0 6 0.1 29.5 8.9 2 0.1 0.9 0.5 6 0.1 27.5 9.4
.24 ..7 0.5 22.4 7.0 -. 7 1.8 48.4 10.7


Based on


the examination of 216 samples for the 1953-54 season and 178 samples for the 1954-55 season.


Florida Citrus Experiment Station and Florida Citrus Commission,
lake Alfred, Florida 709r 10/11/56 RP.






Table 29A


Frequency table for flavor of cannercial frozen concentrated orange juices collected saai-monthly during
the 1953-54 and 1954-55 citrus seasons.



Frequency % of total

Flavor1 Mid-Season Late Season Entire Season

Dec. 1 March 1 March 15 June 1 Dec. 1 June 1
1953-54 1954-55 1953-54 1954-55 1953-54 1954-55

Good 7.7 18.6 25.8 33.5 33.5 52.1

Fair 39.8 32.6 19.5 13.0 59.3 45.6


Poor 6.8 1.4 0.4 0.9 7.2 2.3



1
Based on the evulction of the flavor of 221 samples for the 1953-54 season and 215 samples for the 1954-55
season. The taste panel followed instructions as given on the following page. The total number of flavor
evaluations made by the taste panel in checking. The samples for the 1953-54 season was 2174, including 705
replications. Each of the reconstituted juices from the concentrates, collected during the 1954-55 season, were
tasted at 3 different times by most of the panel members and the data for this season are based upon 4515 individual
flavor grades.
Florida Citrus Experiment Station and Florida Citrus Commission,
lake Alfred, Florida. 709x 10/11/56 FWW











INSTRUCTIONS TO TASTE PANEL

Flavor Evaluation of Frozen Concentrated Orange Juices

Samples: Reconstituted commercial frozen 420 Brix orange
concentrates.


Directions:


(a) Grade for flavor on the following basis and do
not consider other factors, such as color or separation.


Excellent
Very good
Good
Fair


10
9
8-7
6-5


Poor -3
Very Poor 2
Unpalatable 1


Use excellent, good, or fair only if the juice in your
opinion is acceptable as frozen orange concentrate, and
therefore, would be repurchased by you.

(b) If you score a sample of juice 4 or lower, indicai
ting that the product is not acceptable as frozen orange
concentrate, and therefore, would not be repurchased by
you, then indicate all of the flavor defects responsible
for the poor flavor quality.


Indicate flavor defects using only the
tive terms. If necessary, other terms
this list. If you are not sure of the
defect in any juice, which you score 4
indicate that it is nondescript.


following descrip-
will be added to
type of flavor
or lower, then


Flavor Defects


Too sour (acid)
Too sweet
Excessive peel oil
Too bitter
Too astringent


Heated
Buttermilk
Cardboard
Castor Oil
Tallowy


Immature fruit
Overmature fruit
Stale fruit
Insipid


Florida Citrus Experiment Station
and Florida Citrus Commission,
Lake Alfred, Florida 717 -12/22/54-FWW











Table 29B
Flavor defects in commercial frozen concentrated orange juices

Flavor defects Frequency % of total defects 1
1953-54 1954-55

Too sour 1.7 -
Too bitter 0.8 -
Heated 1.7 -
Stale fruit 2.5 1.8

Buttermilk 24.0 18.3

Oxidized flavors
Cardboard 25.6 24.9
Castor oil 10.7 7.1
Tallowy 19.8 27.8
Stale 5.9

Nondescript 13.2 14.2
1
To determine the principal types of off-flavors that
may be found in commercial frozen orange concentrates,
the above summary was made of the frequency of flavor
defects indicated by the taste panel, provided at
least three of the panel members listed flavor defects
for the individual samples on which this summary is
based. This method of determining the occurrence of
flavor defects was used, since it was thought that if
off-flavors in any one samples were not detectable by
more than two panel members, then such an off-flavor
was of little significance.


Florida Citrus Experiment Station
and Florida Citrus Commission,
Lake Alfred, Florida.
709y 10/11/56 FWW




Table 30
Relationship of date of packing to average ascorbic acid content in ccMaercial frozen concentrated orange juices
collected seni-i-onthly during the 1953-54 and 1954-55 citrus seasons.

Ascorbic acid1 Ascorbic acidI

1953-54 1954-55
Approx. No. 2 No.
date of Concentrate Recon. juice of Concentrate Recon. juice
packed Samples mg./lOOg. mg./100ml. Samples rig./100g. mg./100ml.
12/1 2 185 55 -
12/15 20 190 56 11 178 53
1/1 19 185 55 17 184 54
1/15 21 183 54 20 181 54
2/1 20 183 54 21 179 53
2/15 20 184 55 24 177 53
3/1 17 172 51 20 172 51
3/15 11 168 50 13 156 46
4/1 19 153 45 14 140 42
4/15 22 148 44 23 140 42
5/1 22 139 41 20 133 40
5/15 18 131 39 21 124 37
6/1 9 124 37 11 125 37
-.' ''1" ''..


Based on the examination of 220 samples for the 1953-54 season a:
2These values were calculated.
Florida Citrus Experiment Station and Florida Citrus Commission,
Lake Alfred, Florida. 709v 10/11/56 RLH.


nd 215 ssrnples for the 1954-55 season,





Relationship of date of packing to average values of glycosides and diacetyl in
*oncentrated orange juices collected semi- onthly during the 1953-54 Lnd 1954-55


Table 31
Glycosides as hesperidin1
Reconstituted juice mg./l00 mil.

1953-54 19 54-55

Aopprox.
date No. of Averege No. of Average
packed SOaples Value Samples value
12/1 2 98 --
12/15 20 3 11 84
1/1 19 80 17 89
1/15 21 78 20 87
2/1 20 77 21 85
2/15 20 77 24 85
3/1 17 75 20 84
/15 11 75 13 85
A/1 19 58 14 81
4/15 22 74 23 78
5/1 22 76 20 79
5/15 18 74 21 80
6/1 9 75 11 84


1,2
Based


samples of commercial frozen
citrus seasons.


Table 32
Diacetyl value2
p.pOm.
1953-54 1954-55

Approx,
date No. of Average No. of Average
packed Semples value Sav-ples value
121 3 0.6 -
12/15 20 0.6 11 0.4
1/1 19 0.6 17 0.6
1/15 21 0.6 20 0.5
2/1 20 0.7 21 0.5
2/15 20 0.7 24 0.5
3/1 17 0.6 20 0.7
3/15 1 0.7 13 0.6
4/1 19 0.Q 14 0.4
4/15 22 0.8 23 0.7
5/1 21 1.0 20 0.8
5/15 18 1.0 21 1.4
6/1 9 1.0 11 1.0


on the examination of 220 samples for the 1953-54 season and 215 samples for the 1954-55 season.


Diacetyl and
expressed as


acetyl-methyl-carbinol in 25 ml. of distillate from 300 ml. of 120 Brix reconstituted juice,
diacetyl.


Florida Citrus Experinent Station and Florida Citrus Corn mission
lake Alfred, Florida. 709s 10/11/56 FWW.









Table 33
Relationship of date of packing to average Hunter color values of commercial frozen concentrated orange juices
collected semi-monthly during the 1953-54 and 1954-55 citrus seasonsI

Hunter Color Difference Meter average values Hunter Color Difference Meter average values
for concentrates for reconstituted juices
1953-54 1954-55 1953-54 1954-55
Approx. No. No. No. No.
date of Rd a b of Rd a b of Rd a b of Rd a b
packed samples samples samples samples
12/ 1 2 24.2 2.7 32.5 -- - 2 23.0 -6.0 28.4 -- -
12/15 20 22.3 3.5 31.6 11 23.6 3.0 31.5 20 20.7 -5.7 27.3 11 22.3 -5.8 27.9
1/ 1 19 23.0 3.7 32.0 17 23.9 2.6 31.6 19 20.7 -5.7 27.5 17 22.6 -6.1 27.2
1/15 21 22.3 3.5 31.5 20 23.6 3.0 31.9 21 20.3 -5.9 27.2 20 21.9 -6.1 27.3
2/ 1 20 21.6 3.6 31.0 21 23.3 2.9 32.8 20 19.7 -5.7 27.0 21 21.9 -6.3 28.3
2/15 20 21.1 3.7 30.9 24 23.5 3.3 33.4 20 19.7 -5.7 27.1 24 21.8 -6.0 28.8
3/ 1 17 20.3 4.4 30.6 20 22.6 3.5 33.1 17 19.0 -5.3 27.2 20 21.5 -5.8 29.1
3/5 11 19.9 6.0 30.5 13 21.6 5.1 33.4 11 18.3 -4.1 27.5 13 20.8 -4.5 29.9
4/ 1 19 18.7 7.0 30.0 14 20.0 6.3 33.0 19 17.9 -3.4 27.5 14 19.6 -3.8 29.9
4/15 22 18.5 7.4 29.9 23 19.6 6.8 32.6 22 17.9 -3.0 27.3 23 19.3 -3.5 29.7
5/ 1 22 18.2 7.7 29.5 20 19.5 7.1 32.7 22 17.5 -2.9 26.9 20 19.0 -3.6 29.5
5/15 18 17.5 7.4 29.3 21 18.9 7.7 32.4 18 17.1 -2.7 26.8 21 18.7 -2.7 29.4
6/ 1 9 18.1 7.6 29.7 11 18.9 7.3 32.1 9 17.3 -2.5 26.3 11 18.4 -2.8 28.5
., m mm ,


1 Based
Based


on the examination of 220 samples for the 1953-54 season and 215 samples for the 1954-55 season.


Florida Citrus Experiment Station
and Florida Citrus Commission,
Lake Alfred, Florida.
709q 10/I/RLH




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