木质纤维素类生物质生物预处理菌种筛选  

Screening of White Rot Fungi for Biological Pretreatment of Lignocellulosic Biomass

作　　者：徐春燕[1] 杨雪薇[1] 马富英[1] 余洪波[1] 张晓昱[1] 

机构地区：[1]华中科技大学生命科学与技术学院,湖北武汉430074

出　　处：《食品与发酵工业》2009年第2期17-21,共5页Food and Fermentation Industries

基　　金：国家"973"项目(2007CB210200);"863"项目(2007AA021301)

摘　　要：以生物质的转化率(TR)、糖化率(SR)为评价标准,在竹粉、稻草和玉米秸秆3种生物质上筛选了33株采自神农架自然保护区的白腐菌菌株,发现针对不同生物质,适用于生物预处理的菌株不同:竹粉基质为杂色云芝,稻草基质为侧耳属菌株,玉米秸秆基质为乳白耙菌。所筛出白腐菌预处理时间显著缩短,以相应菌株处理竹粉、稻草和玉米秸秆15d,其生物质TR分别提高25.8%、47.0%和136.3%,SR依次达到14.1%、39.4%和37.5%。3种生物质中木质素含量与其糖化率关系密切。33 strains of white rot fungi, isolated from Shennongjia Nature Reserve of Hubei Province, were evaluated to screen the strain suitable for biological pretreatment of bamboo, rice straw and corn stovet. Transformation rate （TR） and saceharification rate （SR） of biomass were used as the standard of strain screening. The result indicated that different white rot fungus should be used to treat different biomass, Coriolus versicolor for bamboo, Pleurotus sp. for rice straw and Irpex lacteus for corn stover. Furthermore, the time of biological pretreatment in this work was significantly shortened. The transformation rates of bamboo, rice straw and corn stover were respectively enhanced by 25.8%, 47.0%, 136.3% and the corresponding saccharification rates reached 14.1%, 39.4%, 37.5%, after pretreatment with strains for 15 days. Comparing the lignocellulosic biomass of bamboo, rice straw and corn stover, it was found that the saccharification rate was negatively correlative with lignin content.

关 键 词：生物预处理 白腐菌 竹 稻草 玉米秸秆 

分 类 号：TQ352[化学工程] TQ223.122