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Impact of region on the composition of milk fatty acids in China

文献类型： 外文期刊

作者： Yang, Yongxin 1 ; Wang, Jiaqi 1 ; Yuan, Tingjie 1 ; Bu, Dengpan 1 ; Yang, Jinhui 1 ; Zhou, Lingyun 1 ; Sun, Peng 1 ; Zhan 1 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Anim Sci, State Key Lab Anim Nutr, Beijing 100193, Peoples R China

2.Anhui Acad Agr Sci, Inst Anim Sci & Vet Med, Hefei 230031, Peoples R China

关键词： raw milk;fatty acid composition;unsaturated fatty acid;conjugated linoleic acid

期刊名称：JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE （ 影响因子：3.638； 五年影响因子：3.802 ）

ISSN： 0022-5142

年卷期： 2013 年 93 卷 11 期

页码：

收录情况： SCI

摘要： BackgroundMilk composition and its fatty acid profile have received much attention with respect to improving human health. However, limited work has been conducted to assess the composition of milk fat in China, which is the third largest producer of milk in the world. In this study the effects of geographical region and seasonal changes (spring and summer) on the fatty acid composition of milk samples collected from six Chinese farms were investigated. ResultsMilk fat and protein contents, as well as some individual fatty acids and five fatty acid groups, were found to be unaffected by season, but they did show significant differences by geographical region. Levels of milk cis-9, trans-11 conjugated linoleic acid decreased in summer and increased in spring, increased in north (Hohhot), northeast (Harbin), north centre (Beijing) and northwest (Xi'an) China and decreased in far northwest (Urumqi) and east (Chuzhou) China. Monounsaturated fatty acids increased in east and northwest China and decreased in northeast China, while polyunsaturated fatty acids increased in far northwest and north centre China and decreased in northeast China. ConclusionThis study provides relevent information that contributes to the understanding of parameters affecting variability of milk fatty acid profiles. (c) 2012 Society of Chemical Industry

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