云南17种核桃仁氨基酸组成分析及营养价值评价  

Amino acid composition analysis and nutritional value evaluation of 17 walnut kernels in Yunnan

作　　者：李瑞 陆斌 刘云 阚欢 郝佳波 毛云玲 LI Rui;LU Bin;LIU Yun;KAN Huan;HAO Jia-bo;MAO Yun-ling(College of Light Industry and Food Engineering of Southwest Forestry University,Kunming,Yunnan 650224,China;Forestry Academy,Kunming,Yunnan 650204,China)

机构地区：[1]西南林业大学轻工与食品工程学院,云南昆明650224 [2]林业科学院,云南昆明650204

出　　处：《食品与机械》2019年第1期80-85,180,共7页Food and Machinery

摘　　要：采集云南17个产地的核桃仁并测定其蛋白质及氨基酸含量,通过氨基酸分类、氨基酸比值系数法、聚类分析法综合考察氨基酸模式及营养价值。结果表明,各地的核桃仁都富含17种氨基酸(色氨酸未检测),氨基酸总量为3.35%～5.14%,必需氨基酸含量为1.13%～1.76%,药效氨基酸含量占氨基酸总量的67.47%～68.63%,呈味氨基酸含量占总氨基酸含量的36.86%～40.63%。所测核桃仁氨基酸模式中必需氨基酸搭配不均衡,第一限制性氨基酸为赖氨酸。核桃仁的比值系数分为61.48～69.54,其营养价值相对较好。经聚类分析得出,云南17种核桃仁中娘青(漾濞)、鲁甸大麻1号(昭通)、宁香(昌宁)、寻倘1号(寻甸)、庆丰3号(昭仁5)产地的核桃仁品质最好。Detected the protein content and amino acid content of walnut kernels collected from 17 producing areas in Yunnan,and the amino acid model and nutritional value were comprehensively investigated by amino acid classification,amino acid ratio coefficient method and cluster analysis method.The conclusion indicated that the walnuts derived from each of the various regions were all rich in 17 amino acids(tryptophan was not detected),and the total amount of amino acids was 3.35% to 5.14%,the essential amino acid content was 1.13% to 1.76%,the medicinal amino acid content was 67.47% to 68.63% of the total amino acids,the taste amino acid content was 36.86% to 40.63% of the total amino acid content.The essential amino acids in the amino acid model of the tested walnut kernels were not balanced,and the first limiting amino acid was lysine.The Ratio Coefficient Score(SRC)of walnut kernel was 61.48 to 69.54,and its nutritional value was relatively better.According to the cluster analysis results,the quality of the walnut kernels originating from the Niangqing(Yangbi),Ludian Hemp 1(Zhaotong),Ningxiang(Changning),Xunuo 1(Xundian)and Qingfeng 3(Zhaoren 5)origins were the best among the 17 walnut kernels in Yunnan.

关 键 词：核桃仁 氨基酸模式 营养价值 聚类分析 

分 类 号：TS255.6[轻工技术与工程—农产品加工及贮藏工程]