利用灰色系统分析姬松茸子实体中氨基酸含量与镉含量的关系

Greg-System-Theory Analysis of Relation Between Cd Contents and Amino Acids Contents in Agaricus blazei Murill's Fruitbodies

运用灰色系统理论分析了姬松茸子实体中17种氨基酸含量与重金属镉含量的关系。结果表明:姬松茸子实体中17种氨基酸中胱氨酸含量与重金属镉含量两者关联系数最大;脯氨酸含量与重金属镉含量两者关联系数次之;谷氨酸含量与金属镉含量两者关联系数最小。

Agaricus blazei Murill as rare edible fungi was adored by more and more customers. However, Cd content in the food has been reported to be often overtop national hygeian standard, which badly limits its exports. Therefore, it was important to breed Agaricus blazei Murill with lower Cd content than national hygeian standard. The relationship between Cd and 17 kinds of amino acids of fruitbodies in Agaricus blazei Murill was studied by grey-system-theory analysis in the paper, which was expected to provide with theoretic guidance. Grey correlation theory used in the paper could integrated all indexes, and its analysis was all-sided and reasonable. Moreover, the relations between the content of Cd and that of 17 kinds of amino acids might be estimated according to the correlating magnitude. The result showed that the correlation coefficient between Cys content and Cd content are highest, secondly that of Pro content and Cd content, and that the correlation coefficient between Glu content and Cd content are lowest. It was also seen from the experimental results that there was the positive relation between the contents of Cys and Cd in Agaricus blazei Murill. It should be of guidance importance to breed Agaricus blazei Murill with lower Cd by realizing the relation between the contents of Cd and 17 kinds of amino acids for the future.