Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7067757 | Bioresource Technology | 2018 | 7 Pages |
Abstract
Lignin depolymerization is a challenging process in biorefinery due to the recalcitrant and complex structure of lignin. This challenge was herein addressed via elaborating a new strategy of combining the bacterial strain Pandoraea sp. B-6 (hereafter B-6) with a deep eutectic solvent (DES) to pretreat rice straw (RS). In this approach, DES effectively depolymerized lignin yet easily caused sugar loss under severe conditions. B-6 not only overcame the obstacle of lignin droplets, but also significantly improved enzymatic digestibility. After B-6 assisted DES pretreatment, the reducing sugar yield increases by 0.3-1.5 times over DES pretreatment and 0.9-3.1 times over the untreated RS. Furthermore, a “cornhusking” mechanism explaining the improvement of the enzymatic digestibility by B-6 was suggested based on physicochemical characterizations of the untreated and pretreated RS. The findings provided a comprehensive perspective to establish a DESâmicrobial process for lignocellulose pretreatment.
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Physical Sciences and Engineering
Chemical Engineering
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Authors
Dan Liu, Xu Yan, Shengnan Zhuo, Mengying Si, Mingren Liu, Sheng Wang, Lili Ren, Liyuan Chai, Yan Shi,