黄孢原毛平革菌降解白酒糟中木质素的影响因素

Study on Lignin Degradation of Distiller's Grains through Phanerochaete chrysosporium

考察不同温度(37℃、38℃、39℃)、时间(8 d、9 d、10 d)、含水量(55%、60%、65%)和接种量(按V/W的10%、20%、30%)组合对黄孢原毛平革菌降解白酒糟中木质素的影响。研究表明:当接种量为10%、含水量为60%,在39℃下发酵10 d,可使白酒糟中木质素降解率达到5.93%;4个因素对黄孢原毛平革菌降解白酒糟中木质素影响的主次顺序为:时间,含水量,温度,接种量;本实验条件下最优发酵组合为:时间为10 d,接种量为10%,温度为38℃,含水量为65%。

The objective of the current study was to assess the lignin degradation of distiller＇s grains using phanerochaete chrysosporium at different temperature（37 ℃, 38 ℃, 39 ℃）, degra- dation time （8 d, 9 d, 10 d）, moisture capacity （55%, 60%, 65%） and inoculum size （10%, 20%, 30% by V/W）. Results showed that the degradability reached 5.93% at 10% inoculation size, 60% moisture, 10-d incubation, and 39 ℃ temperature. The rank of the 4 factors affecting degradability was： time, moisture capacity, temperature, and inoculation size. The optimal parameters for fungi fermenta- tion was： 10-d incubation, 10% inoculation size, 39℃temperature, and 60% moisture.