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通过对13种食用菌对稻草生物降解能力的研究,结果表明除蒙古白蘑(Tricholamamongolicum)外,其他12菌株对稻草中的木素及纤维素均有一定的降解能力。其中侧耳(Pleurotus.ostreatus)表现出了很强的木素降解能力及较低的综纤维素降解能力,其木素降解率为17.86%,综纤维素降解率为2.44%,SF指数为7.97,为理想的木素降解菌。其他菌株木素降解率为2.30%~16.54%,综纤维素降解率为5.60%~17.32%,而SF指数均较低,介于0.14~2.24。通过线性回归得出菌落直径与变色圈直径比值(d1/d2)和选择性指数(SF)为负相关,其相关系数r=-0.1476,相关性不大。表5参9。
Through the study on the biodegradability of 13 kinds of edible fungi to straw, the results showed that all the 12 strains had certain degradation ability on lignin and cellulose in straw except Tricholamamongolicum. Among them Pleurotus.ostreatus showed a strong ability of lignin degradation and a lower ability of lignocellulose degradation with a lignin degradation rate of 17.86%, a holocellulose degradation rate of 2.44% and a SF index of 7.97, Ideal for lignin-degrading bacteria. The other strains lignin degradation rate of 2.30% ~ 16.54%, holocellulose degradation rate of 5.60% ~ 17.32%, while the SF index was low, ranging between 0.14 ~ 2.24. The linear relationship between the colony diameter and the diameter of discoloration circle (d1 / d2) and the selectivity index (SF) were negatively correlated. The correlation coefficient was -0.1476, but the correlation was not significant. Table 5 reference 9.