Group Title: Veg. crops MR
Title: Controlled atmosphere storage of produce
CITATION THUMBNAILS PAGE IMAGE ZOOMABLE
Full Citation
STANDARD VIEW MARC VIEW
Permanent Link: http://ufdc.ufl.edu/UF00094946/00001
 Material Information
Title: Controlled atmosphere storage of produce
Physical Description: 2 leaves : ill. ; 28 cm.
Language: English
Creator: Stephens, James M.
University of Florida -- Agricultural Extension Service
Publisher: Florida Agricultural Extension Service
Place of Publication: Gainesville, Fla.
Publication Date: 1967
Copyright Date: 1967
 Subjects
Subject: Farm produce -- Storage -- Florida   ( lcsh )
Genre: government publication (state, provincial, terriorial, dependent)   ( marcgt )
non-fiction   ( marcgt )
 Notes
General Note: Caption title.
General Note: "April 12, 1967."
Statement of Responsibility: J.M. Stephens.
 Record Information
Bibliographic ID: UF00094946
Volume ID: VID00001
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 433147944

Full Text



CONTROLLED ATMOSPHERE STORAGE OF PRODUCE *

J. M. Stephens HUME LIBRARY,
Assistant Vegetable Crops Specialist
Agricultural Extension Service
University of Florida JUL 11 1972
Gainesville, Florida

April 12, 1967 I.F.A.S. Univ. of Florida

Several techniques of modifying atmospheres are now in commercial

use. They include, along with one refrigeration system (No. 5), the

following:

(1) Conventional "Controlled Atmosphere" (CA)

(2) Tectrol CA

(3) Oxytrol CA

(4) Arcagen CA

(5) Nitrogen Refrigeration (Polarstream)
All are somewhat similar, and have as their primary aim (with the

exception of No. 5) the reduction of the respiration rate of the produce

they are protecting. This reduction is accomplished with all systems by

lowering the oxygen level and slightly Increasing the carbon dioxide level

of the storage atmosphere. All are used in combination with proper

refrigeration.

Here are brief illustrated outlines of the way the major systems

perform this job.

(1) Conventional CA

Controlled -
air Input
used mostly 02
with apples
CO
Scrubber

Oxygen level is reduced as 02 is utilized by the apples; excess

CO2 produced is removed from the storage atmosphere by scrubbers.


* (Compiled from various publications)




-2-


(2) TECTROL
Hydrocarbon fuels


Outside
air


Normal
Atmosphere
flushed out.


(Also used in transit under Transfresh label)

(3) ARCAGEN
-~ '* CO2 Storage Area This scrubber
Modified a may also be
ARCAT Atmosphere Installed
Catalytic separately
for con-
Generator f "
GnARCOSORB _ventional
.-.-.,- Recirculating IScrubber CA.

The Arcat generator is a relatively costly investment, but has low

operating cost. It is a fixed Installation.

(4) OXYTROL


Normal Atmosphere
flushed out


A sensing device controls the release of N to maintain a predetermined

level of oxygen.

(5) LIQUID NITROGEN REFRIGERATION (POLARSTREAM)

Liq. --

N N N N N
N it
Con- Temperature sensing device
talner and automatic valve.


Cooling blanket of liquid nitrogen released over load; primary purpose

is maintaining cool temperatures; but like the oxytrol system, it provides

a low oxygen-high N atmosphere.


For more information, refer to Vegetarian No. 75, October 24, 1966.

JMS:kh


f "^




University of Florida Home Page
© 2004 - 2010 University of Florida George A. Smathers Libraries.
All rights reserved.

Acceptable Use, Copyright, and Disclaimer Statement
Last updated October 10, 2010 - - mvs