SunOleic/High Oleic Peanuts
http://edis.ifas.ufl.edu/ ( Publisher's URL )
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Permanent Link: http://ufdc.ufl.edu/IR00001585/00001
 Material Information
Title: SunOleic/High Oleic Peanuts
Physical Description: Fact Sheet
Creator: Gorbet, Dan
Publisher: University of Florida Cooperative Extension Service, Institute of Food and Agriculture Sciences, EDIS
Place of Publication: Gainesville, Fla.
Publication Date: 2003
Acquisition: Collected for University of Florida's Institutional Repository by the UFIR Self-Submittal tool. Submitted by Melanie Mercer.
Publication Status: Published
General Note: "Revised June 2003."
General Note: "SS-AGR-91"
 Record Information
Source Institution: University of Florida Institutional Repository
Holding Location: University of Florida
Rights Management: All rights reserved by the submitter.
System ID: IR00001585:00001


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SS-AGR-91 SunOleic/High Oleic Peanuts1 Dan Gorbet2 1. This document is SS-AGR-91, one of a series of the Agronomy Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Revised June 2003. Please visit the EDIS web site at http://edis.ifas.ufl.edu. 2. Dan Gorbet, professor, Agronomy Department, North Florida Research and Education Center--Marianna, FL; Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL 32611-0500. The use of trade names in this publication is solely for the purpose of providing specific information. UF/IFAS does not guarantee or warranty the products named, and references to them in this publication does not signify our approval to the exclusion of other products of suitable composition. The Institute of Food and Agricultural Sciences is an equal opportunity/affirmative action employer authorized to provide research, educational information and other services only to individuals and institutions that function without regard to race, color, sex, age, handicap, or national origin. For information on obtaining other extension publications, contact your county Cooperative Extension Service office. Florida Cooperative Extension Service/Institute of Food and Agricultural Sciences/University of Florida/Christine Taylor Waddill, Dean. SunOleic/High Oleic Peanuts: A Step Forward SunOleic/high oleic is a new runner market-type peanut developed by the Florida Agricultural Experiment Station. The major advantage of this new peanut is its greatly improved oil chemistry compared to varieties with "normal" chemistry. SunOleic/high oleic has about 80% oleic and only 2-3% linoleic fatty acid (FA), based on total fat content, which greatly improves the shelf-life of products made from the seed of these peanuts (Table 2). The first high oleic peanut variety released in the world was SunOleic 95R, which originated from a cross with a University of Florida high oleic breeding line (F435), and a component line of 'Sunrunner'. SunOleic 97R was released in 1997 with improved characteristics over 95R (Table 1). This change in fatty acid distribution will provide significantly better shelf-life for SunOleic/high oleic peanuts and peanut products, compared to normal chemistry peanuts. This oil chemistry is essentially equal to, or better than, olive oil, which is known for its high monounsaturated fat content (Figure 1). Increased Shelf Life The dramatic change in the fatty acid profile will translate into significantly better shelf-life for SunOleic/high oleic peanuts and peanut products, compared to regular peanut cultivars. Laboratory studies indicate that SunOleic peanuts will last from 3 to 15 times longer than regular peanuts before going rancid (oxidation). High oleic peanut oil even enhances the shelf-life of regular peanuts when cooked in the high oleic peanut oil. Health Benefits The high level of oleic (18:1) or monounsaturated FA in high oleic peanut significantly lessens the rate of oxidation, compared to regular peanuts. SunOleic peanuts are much lower in polyunsaturated fats, due to the lowering of linoleic fatty acid content, as well as significantly lower in saturated fat content, with lower palmitic (16:0) fatty acid (Figure 1). One University of Florida study indicated that SunOleic peanuts, as part of a low fat diet, have the potential to help lower blood cholesterol (LDL) in humans with that problem. Another study found that


SunOleic/High Oleic Peanuts 2 when SunOleic peanuts were fed to pigs, their fat and blood chemistries had increased levels of monounsaturates and lower polyunsaturates. Both of these changes are considered to be desirable. Figure 1. Comparison of Vegetable Oils High monounsaturated fat diets vs. low fat diets According to a press release by the Peanut Institute (1999), a study published in the American Journal of Clinical Nutrition reports that diets high in monounsaturated fats are superior to low fat diets for heart health. High monounsaturated fats like those in high oleic peanuts were found to: Lower total cholesterol Lower "bad" LDL cholesterol Maintain beneficial HDL cholesterol Lower triglycerides Conclusion: Benefits of High Oleic Peanuts Extends shelf-life of oil & products Lowers LDL cholesterol Helps maintain good flavor Reduces saturated fat content Reduces risk from oxidation by products SunOleic/High Oleic Peanut Production High Oleic peanuts are currently grown mostly in west Texas, due to the negative effects of the tomato spotted wilt virus (TSWV). SunOleic 97R and most other high oleic cultivars are susceptible to TSWV (Table 3). New cultivars with more resistance to TSWV will have significant seed production in 2003, and allow production in the southeastern U.S. Although high oleic peanuts are currently (2003) limited in supply, with about 150,000 acres grown in 2002, seed production will likely increase in 2003 to over 200,000 acres. Several new disease resistant high oleic peanut cultivars are available for 2003. An identity-preserved program, as used in seed certification, helps to maintain the quality assurance, and assists manufacturers in the purity of the high oleic trait. The University of Florida has three patents on the high oleic oil chemistry in peanuts. Further information can be obtained from the contacts listed below. UF High Oleic Peanut Patents Knauft, David H., Daniel Gorbet, and Allen J. Norden. 1999. Peanut oil from enhanced peanut products. U.S. Patent 5,922,390. Date issued: July 13. Knauft, David H., Daniel Gorbet, and Allen J. Norden. 2000. Enhanced peanut products and plant lines. U.S. Patent 6,063,984. Date issued: May 16. Knauft, David H., Daniel Gorbet, and Allen J. Norden. 2000. Enhanced peanut products and plant lines. U.S. Patent 6,121,472. Date issued: September 19. Contacts D.W. Gorbet, North Florida Research and Education Center, 3925 Highway 71, Marianna, FL 32446. Phone 850-482-9904, E-mail dgorbet @mail.ifas.ufl.edu, Fax 850-482-9917.


SunOleic/High Oleic Peanuts 3 Bruce Clary, Office of Technology Licensing, P.O. Box 115500, Gainesville, FL 32611-5500. Phone 352-392-6393, E-mail bclary@ufl.edu, Fax 352392-6600. Tom Stadsklev, Florida Foundation Seed Producers, Inc., P.O. Box 309, Greenwood, FL 32443. Phone 850-594-4721, E-mail seed@digitalexp.com, Fax 850-594-1068. References Peanut Institute. (1999, November 22). Good fat peanut diet beats low-fat diet for heart health. Retrieved June 9, 2003 from http://www.peanut-institute.org/11-2299_GoodFatPeanut_PR.html.


SunOleic/High Oleic Peanuts 4 Table 1. Florida data on SunOleic 97R (1993-95) Cultivar Pod yield #/Acre TSMK % SunOleic 97R 4800 80.0 Florunner 4366 79.8 Table 2. Oil chemistry data Cultivar Oil % Oleic % Linoleic % O/L ratio Iodine value SunOleic 97R48.581.03.027.076 Florunner 48.3 54.0 25.0 2.2 93 Table 3. Data on new University of Florida peanut varieties in Florida tests at Marianna compared to Georgia Green, 1998-2001. Entry # Tests Pod Yields (lbs./A) % TSMK Seed Count (#/lb.) Disease* Andru II** 12426273.9804 2.9 Georgia Green 3940 77.4 895 3.7 Norden** 35424976.3733 3.3 Georgia Green 3750 77.8 801 4.1 Carver 37438674.6683 2.7 Georgia Green 3818 78.0 779 4.2 Hull** 16466876.0636 3.0 Georgia Green 3693 77.6 791 4.2 DP-1 11465376.4732 2.3 Georgia Green 3681 77.7 796 4.3 *1-10 rating, 1 no disease (mostly tomato spotted wilt virus). **High Oliec varieties