西北牧区牧民自制酸奶中c9,t11-CLA含量的研究

食品科学 ›› 2008, Vol. 29 ›› Issue (11): 521-523.

西北牧区牧民自制酸奶中c9,t11-CLA含量的研究

甘伯中, 杜宁娟, 妥彦峰, 杨燕萍, 刘兴龙

甘肃农业大学食品科学与工程学院；

出版日期:2008-11-15 发布日期:2011-12-08

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

GAN Bo-Zhong, DU Ning-Juan, TUO Yan-Feng, YANG Yan-Ping, LIU Xing-Long

College of Food Science and Engineering,Gansu Agricultural University,Lanzhou 730070,China

Online:2008-11-15 Published:2011-12-08

摘要/Abstract

摘要： 共轭亚油酸(CLA)是亚油酸的一组几何和位置异构体,具有多种生理功能。反刍动物肉、乳制品是c9,t11-CLA丰富的天然来源。本研究用气相色谱法测定青海、甘南、天祝和肃北4个不同牧区牧民自制酸奶中c9,t11-CLA的含量,并与市售酸奶和牦牛乳中的含量进行对比。结果表明:采用该方法使牧区酸奶中c9,t11-CLA得到很好的分离,测得青海、甘南、天祝和肃北牧区酸奶中c9,t11-CLA的含量分别为1.007、0.782、0.987、1.196mg/ml酸奶;牧区自制酸奶中c9,t11-CLA的含量与市售酸奶中的含量差异不显著(p>0.05);但含量极显著低于牦牛乳(p<0.01)。

关键词: 气相色谱, c9, t11-CLA, 自制酸奶, 牧区

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

甘伯中, 杜宁娟, 妥彦峰, 杨燕萍, 刘兴龙. 西北牧区牧民自制酸奶中c9,t11-CLA含量的研究[J]. 食品科学, 2008, 29(11): 521-523.

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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