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Efficiency enhancement of a new cellulase cocktail at low enzyme loading for high solid digestion of alkali catalyzed atmospheric glycerol organosolvent pre-treated sugarcane bagasse

文献类型: 外文期刊

作者: Nwamba, Marknoah Chinenye 1 ; Song, Guojie 1 ; Sun, Fubao 1 ; Mukasekuru, Marie Rose 1 ; Ren, Hongyan 2 ; Zhang, Qi 1 ;

作者机构: 1.Jiangnan Univ, Sch Biotechnol, Key Lab Ind Biotechnol, Minist Educ, Wuxi 214122, Jiangsu, Peoples R China

2.Jiangnan Univ, Jiangsu Key Lab Anaerob Biotechnol, Sch Environm & Civil Engn, Wuxi 214122, Jiangsu, Peoples R China

3.Vland Biotech Ltd Co, Qingdao 266102, Shandong, Peoples R China

4.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Haikou 571101, Hainan, Peoples R China

5.Univ Sci & Technol China, Sch Life Sci, Hefei, Peoples R China

关键词: Lignocellulosic biomass; Organosolv pretreatment; Enzymatic saccharification; Accessory enzymes and additives; Cellulase cocktail

期刊名称:BIORESOURCE TECHNOLOGY ( 影响因子:9.642; 五年影响因子:9.237 )

ISSN: 0960-8524

年卷期: 2021 年 338 卷

页码:

收录情况: SCI

摘要: The acquisition during biomass saccharification of elevated levels of fermentable sugars with lower cellulase concentration is central to ensuring an economically viable and industrially relevant hydrolytic process. Thus, using a new cellulase preparation (LT4) at low cellulase loading (2 mg protein/g dried substrate), this study assessed the possible boosting effect of integrating accessory enzymes and additives on high-solids hydrolysis of sugarcane bagasse via fed-batch feeding. Hydrolysis which commenced with initial 8% solids loading and subsequent substrate feeding of 4% solids at 6 h, 18 h, and 24 h respectively, proved optimal for the 20% high-solids saccharification producing 158 g/L total sugars and 83% glucose yield after 72 h with the combined optimized additives and accessory enzymes. The results obtained indicate that the integration of accessory enzymes and additives offers a benignant approach to minimizing the enzyme load and cost of high solids saccharification of lignocellulosic heteropolymers while also boosting enzyme hydrolytic performance.

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