中国农业科学2011，Vol.44Issue(24)：5050-5057,8.DOI:10.3864/j.issn.0578-1752.2011.24.010
稳定性氢同位素在羊肉产地溯源中的应用
Application of Stable Hydrogen Isotope in the Origin Traceability of Lamb Meat
摘要
Abstract
[Objective] Stable hydrogen isotope analysis was investigated for its potential in classification of lamb meat samples according to their geographical origins, aiming to provide a basis for the establishment of traceability indicator system of lamb meat in China. [Method] The δ2H values of defatted lamb meat originating from three pastoral regions including Alxa League, Xilin Gol League and Hulunbuir City of Inner Mongolia, and two agricultural regions including Chongqing and Heze City were determined by Isotope Ratio Mass Spectrometry (IRMS). Analysis of variance (ANOVA) and correlation analysis were used to investigate the difference and the change of δ2H value in lamb meat depending on the geographical origin. Moreover, cluster analysis (CA) and discriminant analysis (DA) were applied to find out the role of hydrogen isotope in the discrimination of geographical origin of lamb meat combined with carbon and nitrogen isotopes. [Result] There was a significant difference in δ2H value of defatted lamb meat from different regions, and the δ2H value in lamb meat was highly correlated with the δ2H value of their drinking water. The discriminant results showed that δ2H value could enhance the discrimination power of the combination of δI3C and δ15N for lamb meat, and the improved total correct classification rate was from 80.8% to 88.9%. [Conclusion] The stable hydrogen isotope can provide reliable origin information and can be used to trace and authenticate the geographical origin of lamb meat.关键词
羊肉/原产地/溯源/稳定性同位素/δ 2HKey words
lamb meat/origin/traceability/stable isotope/δ2H引用本文复制引用
孙淑敏,郭波莉,魏益民,樊明涛..稳定性氢同位素在羊肉产地溯源中的应用[J].中国农业科学,2011,44(24):5050-5057,8.基金项目
国家自然科学基金项目(30800862)、科技部"十一五"科技支撑计划重大项目(2006BAK02A16)、农业部"948"项目(2009-Z45 (2)) （30800862）
