Determination of Content of c9,t11-CLA in Self-made Yoghourts by Herdsmen from Pastoral Area in Northwest China

Abstract

Abstract: Conjugated linoleic acid(CLA) is a class of positional and geometric isomers of linoleic acid,which possesses variety of biological properties.The abundant crude source of c9,t11-CLA is dairy products and meat products of ruminants.The c9,t11-CLA contents in self-made yoghourts by the herdsmen from Qinghai,Gannan,Tianzhu and Subei pastoral areas were determined by using gas chromatography,and they were compered with contents of saled yoghourt and yak milk.Results showed that c9,t11-CLA is separated well.The c9,t11-CLA content in the self-made yoghourts by the herdsmen from Qinghai and Gannan,Tianzhu,Subei pastoral areas are 1.007,0.782,0.987 and 1.196 mg/ml yoghourt respectively.The c9,t11-CLA contents in the self-made yoghourts do not show notable difference to that in saled yoghourt(p>0.05),but the c9,t11-CLA contents in all the yoghourts are significantly lower than that in yak milk(p<0.01).

Key words: gas chromatography, c9,t11-CLA, self-made yoghourt, pastoral area

GAN Bo-Zhong, DU Ning-Juan, TUO Yan-Feng, YANG Yan-Ping, LIU Xing-Long. Determination of Content of c9,t11-CLA in Self-made Yoghourts by Herdsmen from Pastoral Area in Northwest China[J]. FOOD SCIENCE, 2008, 29(11): 521-523.

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Determination of Content of c9,t11-CLA in Self-made Yoghourts by Herdsmen from Pastoral Area in Northwest China

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