Soybean vegetable oil having elevated concentrations of both palmitic acid and stearic acid

• US 5,795,969 A
• Filed: 05/22/1996
• Issued: 08/18/1998
• Est. Priority Date: 12/05/1989
• Status: Expired due to Fees

• Current Assignee: Iowa State University Research Foundation Incorporated (Iowa State University)
• Original Assignee: Iowa State University Research Foundation Incorporated (Iowa State University)
• Inventors: Hammond, Earl G., Fehr, Walter R.
• Primary Examiner(s): Walsh, Stephen
• Assistant Examiner(s): PAK, MICHAEL D
• Application Number:
  US08/651,551
• Time in Patent Office: 818 Days
• Field of Search: 554/8, 554/9, 554/224, 800/200, 800/230, 800/250, 800/DIG. 26, 800/DIG. 69, 426/601, 426/615, 426/629, 426/634
• US Class Current: 554/9
• CPC Class Codes: A01H 5/10 Seeds
• CPC Class Codes: A01H 6/542 Glycine max [soybean]

Abstract

A soybean vegetable oil obtained by crushing and extraction from mature soybean seeds is provided in which the endogenously formed concentrations of both palmitic acid (C16:0) and stearic acid (C18:0) are simultaneously elevated. Neither elevated saturated fatty acid concentration is negated by the expression of the other saturated fatty acid in the elevated concentration. The endogenously formed palmitic acid content is from about 14% to about 24% and the endogenously formed stearic acid content is from about 20% to about 30% by weight of the total fatty acid composition. In a preferred embodiment, the endogenously formed linolenic acid (C18:3) component of the soybean oil is no more than about 3% by weight of the total fatty acid composition.

Claims

1. A soybean oil formed by the process consisting essentially of crushing and extraction from mature soybeans, said oil containing an endogenously formed palmitic acid content of from about 14% to about 24% by weight of the total fatty acid composition, an endogenously formed stearic acid content of from about 20% to about 30% by weight of the total fatty acid composition, and an endogenously formed linolenic acid content of no more than 6.9% by weight of the total fatty acid composition, with said palmitic stearic and linolenic acid contents being determined by gas chromatography.

2. A soybean oil according to claim 1 wherein said palmitic acid content is at least about 15.0%.

3. A soybean oil according to claim 1 wherein said palmitic acid content is at least about 17.0%.

4. A soybean oil according to claim 1 wherein said stearic acid content is at least about 20.0%.

5. A soybean oil according to claim 1 obtained from the progeny of the cross A6 having ATCC Accession No. 97392 x A17 having ATCC Accession No. 40539 and their descendants.

6. A soybean oil according to claim 1 obtained from the progeny of the cross A89-259098 having ATCC Accession No. 97391 x AX4663-5-4-5 having ATCC Accession No. 93793 and their descendants.

7. A soybean oil according to claim 1 wherein the endogenously formed saturated fatty acid content is at least about 45.0% by weight.

8. A soybean oil according to claim 1 wherein said extraction from mature soybeans was conducted with hexane.

9. A soybean oil formed by the process consisting essentially of crushing and extraction from mature soybeans, said oil containing an endogenously formed palmitic acid content of from about 14% to about 24% by weight, an endogenously formed stearic acid content of from about 20% to about 30% by weight and an endogenously formed linolenic acid content of no more than about 3% by weight of the total fatty acid composition, said palmitic stearic and linolenic acid contents being determined by gas chromatography.