为了开发和利用滩羊这一独特的地方品种资源,保护宁夏滩羊肉的品牌和维护消费者的合法权益,使用电子对滩羊、小尾寒羊和山羊的背最长肌、后腿肌肉和胸部肌肉的挥发性物质进行了测定,采用主成分分析(PCA)、传感器贡献率分析(Loadings)、线性分析(LDA)3种方法进行区别分析.结果表明:利用电子鼻可明显区分3个品种羊的胸部肌肉和背最长肌,而胸部肌肉PCA分析区分率达到了1.0,表明胸部肌肉可以实现完全区分.%In order to exploit the unique local resources of Tan sheep and protect the brand of Tan sheep meat in Ningxia and consumers "rights and interests, the volatile matter was tested in longissimus muscle, hind leg muscles and thoracic muscle of Tan sheep, Small Tail Han sheep and goat using electronic nose. Principal component analysis (PCA) , sensor contribution rate analysis (Loadings) and linear analysis(LDA) showed that thoracic muscle and longissimus muscle from three sheep can be obviously identified and distinguished by electronic nose, and the PCA distinguish rate of thoracic muscle reached 1 , which indicated that the thoracic muscle of different breeds can be entirely distinguished.
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