TITLE:
Effects of the Castanea mollissima Blume Shell Cultivation Substrate on the Yield and Nutritional Composition of Pleurotus geesteranus
AUTHORS:
Jinping Zhang, Xuebin Li, Yue Ying, Xiaohua Yao
KEYWORDS:
Castanea mollissima Blume Shell, Pleurotus geesteranus, Yield, Nutrients, Heavy Metals
JOURNAL NAME:
Food and Nutrition Sciences,
Vol.10 No.9,
September
19,
2019
ABSTRACT: Cottonseed
hull substrates blended with different ratios of Castanea mollissima
Blume shell were prepared and used for the cultivation of Pleurotus geesteranus. The effects of the
chestnut shell content on the mycelial growth rate, yield, nutritional
composition and contents of heavy metals of the cultivated Pleurotus geesteranus were investigated. The
results suggest that the Castanea mollissima Blume shell in substrate
can increase the mycelial growth rate, yield,
biological efficiency and the contents of protein, crude fiber, amino acids and
essential amino acids of Pleurotus geesteranus. Further investigation suggests that the tannin and saponin in Castanea mollissima Blume shell and the C/N ratio of substrate significantly influence the
mycelial growth rate. The crude fat content of Pleurotus geesteranus decreased, while the contents of heavy metals
including mercury (Hg), arsenic (As), cadmium (Cd) and lead (Pb) increased with
the increase of the Castanea mollissima
Blume shell content in substrate. Based on these results, the content of Castanea mollissima Blume shell was optimized to be
less than 30% for the cultivation of Pleurotus geesteranus.