Natural surfactant-aided dilute sulfuric acid pretreatment of waste wheat straw to enhance enzymatic hydrolysis efficiency.
Natural surfactant-aided dilute sulfuric acid pretreatment of waste wheat straw to enhance enzymatic hydrolysis efficiency.
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DOI：
10.1016/j.biortech.2020.124651
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发表时间：
2021-01
影响因子：
11.4
通讯作者：
Wei Tang;Xinxing Wu;Caoxing Huang;Zhe Ling;Chenhuan Lai;Q. Yong
中科院分区：
文献类型：
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作者：
Wei Tang;Xinxing Wu;Caoxing Huang;Zhe Ling;Chenhuan Lai;Q. Yong
传统的表面活性剂已经被报道可以增强木质纤维素的酶促糖化，然而，重要的是将这些发现转移到使用高效和低毒性的天然表面活性剂的系统中。在这项工作中，一种新的混合方法，包括使用天然表面活性剂（腐殖酸，HA）在温和的酸（H2SO4）预处理废麦草（WWS）生物炼制。发现HA有助于去除高达40.6%的木质素和高达96.2%的半纤维素。由于这些变化，酶解效率高达92.9%。酶解的成功部分归因于纤维素酶对纤维素酶的可及性的改善和木质纤维素结构的变化。我们预计，这些发现将用于进一步评估HA作为生物炼制预处理过程中的有益表面活性剂，并可能促使其他人确定其他可能证明更有效的天然表面活性剂。
Traditional surfactants have been reported to enhance enzymatic saccharification of lignocellulose, however, it is important to transfer these findings to a system that uses a high-efficiency and low-toxicity natural surfactant instead. In this work, a novel hybrid method involving use of the natural surfactant (humic acid, HA) during mild acid (H2SO4) pretreatment was developed for waste wheat straw (WWS) biorefinery. The HA was found to help remove lignin up to 40.6%, and hemicellulose up to 96.2%. As a result of these changes, the enzymatic hydrolysis efficiency reached as high as 92.9%. The success of enzymatic digestion was partly attributed to the improved accessibility of cellulose to cellulase and changes in lignocellulose structures. We anticipate that these findings will be used to further evaluate HA as a beneficial surfactant in biorefinery pretreatment processes, and perhaps spur others to identify other natural surfactants that may prove even more effective.