Cellulase production using biomass feed stock and its application in lignocellulose saccharification for bio-ethanol production

详细信息    查看全文

• 作者：Rajeev K. Sukumaran ; Reeta Rani Singhania ; Gincy Marina Mathew ; Ashok P ; ey
• 关键词：Bio-ethanol ; Cellulase ; Beta glucosidase ; Trichoderma ; Aspergillus ; Solid state fermentation
• 刊名：Renewable Energy
• 出版年：2009
• 出版时间：February 2009
• 年：2009
• 卷：34
• 期：2
• 页码：421-424
• 全文大小：140 K

文摘

A major constraint in the enzymatic saccharification of biomass for ethanol production is the cost of cellulase enzymes. Production cost of cellulases may be brought down by multifaceted approaches which include the use of cheap lignocellulosic substrates for fermentation production of the enzyme, and the use of cost efficient fermentation strategies like solid state fermentation (SSF). In the present study, cellulolytic enzymes for biomass hydrolysis were produced using solid state fermentation on wheat bran as substrate. Crude cellulase and a relatively glucose tolerant BGL were produced using fungi Trichoderma reesei RUT C30 and Aspergillus niger MTCC 7956, respectively. Saccharification of three different feed stock, i.e. sugar cane bagasse, rice straw and water hyacinth biomass was studied using the enzymes. Saccharification was performed with 50 FPU of cellulase and 10 U of β-glucosidase per gram of pretreated biomass. Highest yield of reducing sugars (26.3 g/L) was obtained from rice straw followed by sugar cane bagasse (17.79 g/L). The enzymatic hydrolysate of rice straw was used as substrate for ethanol production by Saccharomyces cerevisiae. The yield of ethanol was 0.093 g per gram of pretreated rice straw.