Alkaline hydrogen peroxide pretreatment of cashew apple bagasse for ethanol production: Study of parameters
Alkaline hydrogen peroxide pretreatment of cashew apple bagasse for ethanol production: Study of parameters
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DOI：
10.1016/j.biortech.2013.03.153
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发表时间：
2013-07-01
影响因子：
11.4
通讯作者：
Ponte Rocha, Maria Valderez
中科院分区：
文献类型：
--
作者：
da Costa Correia, Jessyca Aline;Marques Junior, Jose Edvan;Ponte Rocha, Maria Valderez
根据所得纤维素转化为葡萄糖的情况，对腰果苹果甘蔗渣 (CAB) 的碱性过氧化氢 (AHP) 预处理进行了评估。在随后使用商业纤维素酶对预处理的生物质进行酶促糖化之后，评估了pH 11.5下的过氧化氢浓度、生物质负载以及在35℃和250rpm下进行的预处理持续时间的影响。本研究中使用的 CAB 含有 20.56 +/- 2.19% 纤维素、10.17 +/- 0.89% 半纤维素和 35.26 +/- 0.90% 木质素。预处理导致残余固体中木质素含量降低。增加 H2O2 浓度 (0-4.3% v/v) 导致酶水解速率更高。较低的生物量负荷产生较高的葡萄糖产量。此外，在预处理过程中，液体级分中没有产生可测量的糠醛和羟甲基糠醛。结果表明碱性过氧化氢对CAB的预处理是有效的。 Crown 版权所有 (C) 2013 由 Elsevier Ltd 出版。保留所有权利。
The alkaline hydrogen peroxide (AHP) pretreatment of cashew apple bagasse (CAB) was evaluated based on the conversion of the resultant cellulose into glucose. The effects of the concentration of hydrogen peroxide at pH 11.5, the biomass loading and the pretreatment duration performed at 35 degrees C and 250 rpm were evaluated after the subsequent enzymatic saccharification of the pretreated biomass using a commercial cellulase enzyme. The CAB used in this study contained 20.56 +/- 2.19% cellulose, 10.17 +/- 0.89% hemicellulose and 35.26 +/- 0.90% lignin. The pretreatment resulted in a reduced lignin content in the residual solids. Increasing the H2O2 concentration (0-4.3% v/v) resulted in a higher rate of enzymatic hydrolysis. Lower biomass loadings gave higher glucose yields. In addition, no measurable furfural and hydroxymethyl furfural were produced in the liquid fraction during the pretreatment. The results show that alkaline hydrogen peroxide is effective for the pretreatment of CAB. Crown Copyright (C) 2013 Published by Elsevier Ltd. All rights reserved.