人工北虫草废弃米基栽培辅料对平菇品质的影响

Effect of Cordyceps militaris′ Abandoned Cultivation Material on Quality of Pleurotus ostreatus

以北虫草废弃米基为试材,以平菇为指示食用菌,采取平菇栽培生长过程追踪、高效液相分析等方法,研究了废弃米基替代麦麸辅料对平菇菌丝生长、产量、菇体多糖和虫草素、腺苷含量的影响,以期在不降低平菇产量的条件下改善平菇品质及为虫草废弃米基提供新的利用途径。结果表明:北虫草废弃米基为部分或完全辅料栽培平菇,以完全或部分替代麦麸时,对供试平菇生物转化率无明显影响,但明显提高平菇菌丝生长速度,米基添加量为10%和20%时,菌丝生长速度分别提高了1.30倍和1.36倍;平菇子实体中多糖含量也显著提高,平菇采摘后菌糠中多糖含量也有所增加;平菇浸提液HPLC检测结果显示,平菇中各组腺苷含量无明显差别,但可以检测到虫草素。

In this study,the rate of mycelial growth,yield,fruitbody polysaccharide,adenosine and cordycepin of P.ostreatus were investigated when the waste medium of C.militaris was used as supplemental material.The fruitting test and HPLC method were used under the condition of not reducing the mushroom production in order to improve the quality of P.ostreatus and provide a new way to C.militaris waste mediums cyclic utilization.The results showed that C.militaris waste materials completely or partly replace the wheat bran had no significant effect on biomass transformation rate,but could improve the mycelium growth rate of P.ostreatus.When the abandoned cultivation material was added up to 10% and 20% as supplemental material,the growth rate of promycelium increased 1.30 times and 1.36 times respectively;the content of polysaccharide in P.ostreatus was significantly increased,as well as the content of polysaccharide in media was also increased;the cordycepin was detected in P.ostreatus by HPLC.