Weng Boqi

Relational Grade Analysis on Relationship of Amino Acid Contents and Arsenic Content in Agaricus brasiliensis Under Interaction of Selenium and Lanthanium

The mixed material culture experiment was conducted,and the amino acid and arsenic(As) contents were measured by Hitachi 8810 Automatic Amino acid Analyzer and Atomic Absorption Spectrometry(AAS).Then the relationship of amino acid contents and As content in the fruiting bodies of Agaricus brasiliensis under the interaction of selenium(Se) and lanthanium(La) was analyzed by grey system theory in order to provide a scientific basis for application of Se and La with reasonable amounts to produce mushroom with low As content.The order of relational grade of the treatments was B4 B1 B2 B0 B3,among which,B4 obtained the highest relational grade with a value of 0.835 1,while B2 got the lowest grade with a value of 0.726 9.It indicated that the concentrations of Se and La had certain effects on As and amino acid contents in the fruiting bodies of A.brasiliensis.Under the interaction of Se and La,the order of relational grade of the 17 amino acids with As content was Ala Tyr Cys Phe Lys His Asp Ile Thr Val Leu Gly Pro Arg Ser Glu Met.The content of Ala had the highest relational grade with As content among the 17 amino acids with a value of 0.856 6,followed by Tyr and Cys and the lowest was Met.

Principal component analysis of Agaricus blazei Murrill under the condition of exogenous addition of Se.

The effect of different Se on Agaricus blazei Murrill,s agronomic traits by principal component analysis was studied.It can simplify into three effect principle components from the eight traits:cover thickness,cover weight,cover diameter,shank length,shank diameter,shank weight,flower weight,and yield.The results showed that the first principal component of agronomic traits and morphological effects factor can reflect the goal of the effects on the growth of Agaricus bazei Murrill in the concentration selenium.It was the expected effect and was the main referenced traits of the increased of Agaricus bazei Murrill.Based on the results,the training material after adding 30 mg/kg exogenous Se could produce the best effect.