摘要
在没有外源营养时，白腐菌能在杨木片上生长，并对杨木片术素成分有明显的降解作用；白腐菌协同碱性过氧化氢能进一步增加对杨木片术素成分的脱除作用，与碱性过氧化氢单独处理相比较，对酸溶本素的脱除作用不明显；白腐菌对杨木片本素的降解以氧化反应为主，其中对愈创木基的降解作用大于紫丁香基，残余术素分子中的-CH3和-OH基含量均有增加，羰基的数量也增加了；白腐菌协同碱性过氧化氢处理对杨木片细胞角部位的木素脱除率明显高于胞间层。
The bio-pretreatment with white rot fungus Phlebia radiata for aspen alkaline H2O2 delignification and its mechanism were studied. White rot fungi being basidiomyceteous, appeared to cultivate readilyon aspen chips in absence of any exogenous nutrients. In the course of their cultivation, lignin was removedfrom the aspen slowly accompanied by incrersing xylan content in the aspen. In alkaline H2O2 processing following the fungus treatment could further enhance the removal of lignin. It was noted that lignin was oxidized and the guaiacyl units in lignin appeared to be the preferential substrates for Phlebia radiata to the invasion to have them transferred to syringyl units. Analysis of SEM-EDAX studies revealed that when aspenchips were treated with fungi along with alkaline H2O2, secondary wall delignification appeared to be more intensive than those in the lamella and the corner areas of the cells.
出处
《中国造纸学报》
CAS
CSCD
北大核心
1997年第B12期17-23,共7页
Transactions of China Pulp and Paper
基金
高等学校博士学科点专项科研基金
