高温液态水处理杂交狼尾草提高总糖收率
LIQUID HOT WATER PRETREATMENT OF Pennisetum hybrid TO ENHANCE SUGAR RECOVERY
查看参考文献12篇
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文摘
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以杂交狼尾草为原料,采用高温液态水预处理方法研究其对能源草酶解效果的影响。研究结果表明:180℃,40 min,固液比1:20,饱和蒸汽压的水解条件为最优预处理条件,此时总木糖收率为98.09%。高温液态水可降解87.99%的半纤维素和41.28%的木质素;破坏原本平整的表面,使更多的纤维素裸露,使纤维素结晶指数增大,破坏纤维素、木质素中的化学基团(如分子内与分子间氢键等),这些变化均有利于后续酶解。当加酶量为40 FPU/g,杂交狼尾草72 h时的酶解率由62.50%提高到99.36%,高温液态水和酶解后总糖收率达到90.40%。 |
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其他语种文摘
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The effects of liquid hot water on enzymatic digestibility of Pennisetum hybridare were investigated in this paper. The results indicated that 180 ℃, 40 min, 1: 20 ratio of solid to liquid and saturated vapor pressure were the optimal pretreatment conditions, whose total yield of xylose researched 98.09%. After liquid hot water pretreatment,87.99% of hemicellulose and 41.28% lignin were degraded; The flat surface was damaged, more fibers exposed, the crystallinity index increased,the chemical groups in cellulose and lignin were destroyed like hydrogen bonding,which all helped the subsequent enzymatic hydrolysis. 72 h enzymatic digestibility increased from 62.50% to 99.36% under the enzyme loading of 40 FPU/g, and the total sugar recovery reached 90.40% when combined the pretreatment and enzymatic hydrolysis process. |
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来源
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太阳能学报
,2016,37(7):1650-1655 【核心库】
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关键词
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杂交狼尾草
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高温液态水
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酶解率
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能源草
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地址
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中国科学院广州能源研究所, 中国科学院可再生能源重点实验室;;广东省新能源和可再生能源研究开发与应用重点实验室, 广州, 510640
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0254-0096 |
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学科
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能源与动力工程 |
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基金
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中国科学院青年创新促进会项目
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广州市珠江科技新星专项
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国家自然科学基金
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广东省科技计划项目
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广东省自然科学基金重点项目
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文献收藏号
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CSCD:5761181
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