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

第一作者： Nwamba, Marknoah Chinenye

作者： Nwamba, Marknoah Chinenye;Song, Guojie;Sun, Fubao;Mukasekuru, Marie Rose;Ren, Hongyan;Zhang, Qing;Cao, Tishuang;Wang, Huaming;Sun, Haiyan;Hong, Jiong

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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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