Nutritional Value of Protein of Panus giganteus's Fruit Bodies Under the Condition of Exogenous Addition of Zn

Using current international method, the effects of zinc(Zn)addition of different concentrations on nutritional value of protein of Panus giganteus's fruit bodies were studied in order to provide a scientific basis for its cultivation technology improvement.The results showed that total amino acid content in the treatment of 40 mg·kg-1 was the highest, and lied significant difference to the control and no significant difference to the others, and that Zn content was the highest in the treatment of 10 mg·kg-1.The results of nutritional value showed that the amino acid score(AAS), essential amino acid index(EAAI), score of ratio coefficient of amino acid(SRCAA)and biological valence(BV)in the protein of Panus giganteus's fruit bodies cultivated with medium in which middle concentration(30 mg·kg-1)of Zn treatment applicated were the highest among six treatments, being 95.33 , 91.70, 82.52 and 88.50 respectively;and its chemical score(CS)and nutritional index(NI)were 73.22 and 25.49, all held the third place in six treatments with different concentration of Zn.It was seen on the basis of synthesizing evaluation that the nutritional value of protein in the treatment of 30 mg·kg-1 Zn was the highest.