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2009•Journal of Henan University of TechnologyRequires access

ANALYSIS OF PHYSICOCHEMICAL PROPERTIES AND COMPOSITION OF GRAPE SEED OIL

Jun Li

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Abstract

The fatty acid composition and triglyceride structures of grape seed oil were determined by GC and steapsin hydrolysis.The result showed that the content of unsaturated fatty acids was 89.34%,and linoleic acid was 75.25% the total fatty acid content.Based on the 1,3-random-2-random distribution theory,the triglycerides in grape seed oil were calculated,and the triglycerides mainly contained LLL 42.35%,Sn-LOL 16.69%,Sn-POL 2.17%,and Sn-LLP 5.52%.The results of high performance liquid chromatography and Rancimat indicated that the content of vitamin E in the grape seed oil was 21.02 mg/100 g,and the value of oxidation stability at 100 ℃ was 2.6 h.Based on the analysis of physicochemical properties,the iodine value was 131.7 g/100 g,belonging to dry oil.

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What this paper is about

The fatty acid composition and triglyceride structures of grape seed oil were determined by GC and steapsin hydrolysis.The result showed that the content of unsaturated fatty acids was 89.34%,and linoleic acid was 75.25% the total fatty acid content.Based on the 1,3-random-2-random distribution theory,the triglycerides in grape seed oil were calculated,and the triglycerides mainly contained LLL 42.35%,Sn-LOL 16.69%,Sn-POL 2.17%,and Sn-LLP 5.52%.The results of high performance liquid chromatography and Rancimat indicated that the content of vitamin E in the grape seed oil was 21.02 mg/100 g,and the value of oxidation stability at 100 ℃ was 2.6 h.Based on the analysis of physicochemical properties,the iodine value was 131.7 g/100 g,belonging to dry oil.

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Available abstract

The fatty acid composition and triglyceride structures of grape seed oil were determined by GC and steapsin hydrolysis.The result showed that the content of unsaturated fatty acids was 89.34%,and linoleic acid was 75.25% the total fatty acid content.Based on the 1,3-random-2-random distribution theory,the triglycerides in grape seed oil were calculated,and the triglycerides mainly contained LLL 42.35%,Sn-LOL 16.69%,Sn-POL 2.17%,and Sn-LLP 5.52%.The results of high performance liquid chromatography and Rancimat indicated that the content of vitamin E in the grape seed oil was 21.02 mg/100 g,and the value of oxidation stability at 100 ℃ was 2.6 h.Based on the analysis of physicochemical properties,the iodine value was 131.7 g/100 g,belonging to dry oil.

Key concepts: Iodine value, Chemistry, Food science, Triglyceride, Composition (language), Linoleic acid, Fatty acid, Acid value

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