Behkami Shima, Zain Sharifuddin Md, Gholami Mehrdad, Bakirdere Sezgin
Department of Chemistry, University of Malaya, Kuala Lumpur 50603, Malaysia; Department of Chemistry, University of Najand, Urmia 5719883826, Iran.
Department of Chemistry, University of Malaya, Kuala Lumpur 50603, Malaysia.
Food Chem. 2017 Feb 15;217:438-444. doi: 10.1016/j.foodchem.2016.08.130. Epub 2016 Sep 2.
The potential for the isotopic ratio analysis of cattle tail hair in determining the geographical origin of raw cow milk in Peninsular Malaysia had been investigated in this research using exploratory visualization. A significant positive correlation (p<0.0001) (n=54) was noticed between δ(13)C and δ(15)N in milk with that of hair which indicated that these matrices could be used in tracing the geographical origin of animal produce and tissues, and there is a possibility that hair could be used as a substitute in building the database for the geographical traceability of milk. It was also observed that both hair and milk isotopic ratio correlations exhibited separation between the northern and southern regions. The accuracy of using isotopic ratio in determining geographical discrimination had been clearly demonstrated when several commercial milk samples from the same regions under the study were correctly assigned to the appropriate geographical clusters.
本研究利用探索性可视化方法，对马来西亚半岛生牛奶地理来源判定中牛尾毛同位素比率分析的潜力进行了调查。牛奶中的δ(13)C和δ(15)N与毛发中的δ(13)C和δ(15)N之间存在显著正相关（p<0.0001）（n=54），这表明这些基质可用于追溯动物产品和组织的地理来源，并且毛发有可能作为构建牛奶地理可追溯性数据库的替代品。还观察到毛发和牛奶同位素比率相关性在北部和南部地区之间呈现出分离。当研究中来自同一地区的几个商业牛奶样本被正确分配到适当的地理集群时，使用同位素比率确定地理歧视的准确性得到了明确证明。
