Acta Agriculturae Zhejiangensis ›› 2023, Vol. 35 ›› Issue (6): 1416-1426.DOI: 10.3969/j.issn.1004-1524.2023.06.19

• Environmental Science • Previous Articles     Next Articles

Feasibility of Auricularia cornea cultivation with bamboo sawdust instead of wood sawdust and comprehensive evaluation of quality

YE Lei1,2(), ZHANG Bo1, YANG Xuezhen1, LI Xiaolin1, ZHANG Xiaoping2,*(), TAN Wei1,*()   

  1. 1. Sichuan Institute of Edible Fungi, Chengdu 610066, China
    2. College of Resources, Sichuan Agricultural University, Chengdu 611130, China
  • Received:2022-08-10 Online:2023-06-25 Published:2023-07-04

Abstract:

In order to evaluate the feasibility of bamboo sawdust in cultivation medium of Auricularia cornea, an experiment was carried out. Four treatments with different substitution proportions of bamboo sawdust instead of wood sawdust were set, as well as the original formula as the control. The mycelium growth, yield, agronomic characteristics and amino acid composition of fruiting bodies were determined. Principal component analysis (PCA), cluster heat map, analysis of variance (ANOVA), and amino acid coefficient method were used to comprehensively evaluate the effect of different treatments on artificial cultivation of A. cornea. It was shown that replacing 8% wood sawdust with bamboo sawdust worked for the cultivation of A. cornea. Substitution of wood sawdust in the medium with bamboo sawdust could significantly (P<0.05) increase the contents of amino acid, ash, and protein in fruiting bodies, and reduce crude fiber content. Besides, when the substitution proportion was 8% to 16%, it could significantly increase the crude polysaccharides content in the fruit bodies. The fruiting bodies obtained from 5 treatments all contained 17 amino acids, of which 7 were essential. The content of essential amino acids in fruiting bodies under the experiment was higher than that of FAO (Food and Agriculture Organization of the United Nations)/WHO (World Health Organization) model, yet lower than that of whole egg model. Lysine was the first limiting amino acid among all the essential amino acids. The lead (Pb) and cadmium (Cd) content of fruiting bodies under all the treatments complied with national food safety standards. In conclusion, cultivation of A. cornea with 8% bamboo sawdust instead of wood sawdust was feasible, and it could promote the accumulation of amino acids, improve the taste, and the nutritional value of protein.

Key words: Auricularia cornea, bamboo sawdust, principal component analysis, yield, nutritional ingredient, amino acid evaluation

CLC Number: