期刊
MEAT SCIENCE
卷 117, 期 -, 页码 108-116出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.meatsci.2016.02.043
关键词
Ovine; Rumenic acid; Survey; Trans fatty acids; Vaccenic acid
资金
- Department of Education, Language Policy AMP
- Culture of the Basque Government [IT766-13]
- University of the Basque Country (UPV/EHU) [RYC-2011-08593]
A survey of commercially available lamb meat was performed in northern Spain in order to evaluate their fatty acid (FA) composition with emphasis on trans fatty acid (TFA) and conjugated linoleic acid (CLA) isomers. Samples were collected in spring (n = 24) and winter (n = 24) of 2013, and were obtained in about equal numbers from grocery stores and butcher-shops. Subcutaneous fat, known to be a sensitive indicator of TFA content in ruminants, was analyzed by GC-FID. In general, very few differences were observed between collection periods and type of stores because of the high variability within the groups that was believed to be associated with differences in genetics and feeding strategies. However, the 10t/11t ratio of all samples showed two clearly identifiable groups irrespective of the source: 1) when 10t/11t was >1, 10t-shifted samples; 2) when 10t/11t was non shifted samples where 11t-18:1 was the predominant isomer. These two groups were clearly identified and associated with distinct FAs using principal component analysis. (C) 2016 Elsevier Ltd. All rights reserved.
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