Analysis of Triglycerides of Cold Precessed Tea Seed Oil
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Abstract:
The fatty acid composition of tea seed oil was detected by using Gas Chromatography. It was found that tea seed oil contained unsaturated fatty acid up to 80%, the major of which were oleic acid and linoleic acid. By the method of pancreas lipase hydrolysis, the Sn-2 position fatty acid was analyzed and the triglycerides composition of tea seed oil were calculated according to 1,3-random-2-random distribution doctrine. The key triglycerides were found as OOO, OOL, POO, PLO, LLO and PPO. Among them, the content of three saturated fatty acid esters was 53.5%, and the content of three saturated fatty acid ester content was only 0.05%. Through HPLC and Rancimat determination, vitamin E content of the tea seed oil was found as 0.18 mg/g and the duration of the oxidation stability at 110 ℃ was 6.02 h.
