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04.11.2019 | Original Research

Preparation of high molecular weight pH-responsive lignin-polyethylene glycol (L-PEG) and its application in enzymatic saccharification of lignocelluloses

verfasst von: Cheng Cai, Yu Bao, Yu Jin, Feiyun Li, Yuxia Pang, Hongming Lou, Yong Qian, Xueqing Qiu

Erschienen in: Cellulose | Ausgabe 2/2020

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Abstract

Highly recyclable pH-responsive lignin-polyethylene glycol (L-PEG) was synthesized to achieve enhanced lignocellulosic hydrolysis and recycling cellulase. The performance of L-PEG could be easily regulated by adjusting the molecular weight and the amount of PEG. The large molecular weight facilitated L-PEG to reduce the invalid adsorption of cellulase on lignin during hydrolysis and enhance its flocculation effect at around pH 3.0. L-PEG_1000-40 obtained by adding 40 wt% (based on lignin) PEG1000 could effectively enhance the enzymatic hydrolysis of lignocelluloses and recover most of cellulase after hydrolysis through simply adjusting the pH of hydrolysate. During eucalyptus hydrolysis, using L-PEG_1000-40 to recycle cellulase could not only save 40% cellulase, but also increase the glucose yield by 121%. Due to the low synthesis cost of L-PEG and the simple and convenient recovery operation, this new method is beneficial to the improvement of lignocellulosic saccharification process and the high-value utilization of lignin.

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Vorheriger Artikel Preparation of fluorescent cellulose nanocrystal polymer composites with thermo-responsiveness through light-induced ATRP

Nächster Artikel Alkaline hydrogen peroxide pretreatment of bamboo culm for improved enzymatic release of reducing sugars using recombinant cellulases

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Titel: Preparation of high molecular weight pH-responsive lignin-polyethylene glycol (L-PEG) and its application in enzymatic saccharification of lignocelluloses
verfasst von: Cheng Cai
Yu Bao
Yu Jin
Feiyun Li
Yuxia Pang
Hongming Lou
Yong Qian
Xueqing Qiu
Publikationsdatum: 04.11.2019
Verlag: Springer Netherlands
Erschienen in: Cellulose / Ausgabe 2/2020
Print ISSN: 0969-0239
Elektronische ISSN: 1572-882X
DOI: https://doi.org/10.1007/s10570-019-02800-7

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Abstract

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