棉籽壳不同预处理与平菇子实体中游离棉酚的含量

Effect of Different Cotton Seed Hull Substrate Pretreatments on the Gossypol Content of Pleurotus ostreatus

通过在100℃和126℃下灭菌及堆积发酵等处理的含87%棉籽壳的培养料来栽培平菇,然后测定平菇子实体中棉酚的含量,结果发现棉酚含量均在国家安全标准(?0.02%即200mg/kg)以内,其中以堆积发酵18d的培养料栽培得到的平菇子实体棉酚含量最低,只有24.00mg/kg。

Gossypol levels were determined in Pleurotus ostreatus fruit bodies grown on a substrate containing 87% cotton seed hulls that had been fermented for 18 d, or fermented for 3 d and then sterilized by autoclaving at 100 ℃ for either 240 or 600 min or at 126℃ for either 20 or 40 min. All samples contained gossypol levels that were below the National Security Standard （ ≤0.02%;200 mg/kg）, with the lowest value （24.0 mg/kg） recorded in fruit bodies grown on the substrate that had been fermented for 18 days.