Relations Between Moso Bamboo Surface Properties Pretreated by Kraft Cooking and Dilute Acid with Enzymatic Digestibility
Relations Between Moso Bamboo Surface Properties Pretreated by Kraft Cooking and Dilute Acid with Enzymatic Digestibility
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硫酸盐蒸煮和稀酸预处理毛竹表面性能与酶消化率的关系
DOI：
10.1007/s12010-017-2520-6
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发表时间：
2017-12-01
影响因子：
3
通讯作者：
Yong, Qiang
中科院分区：
文献类型：
--
作者：
He, Juan;Huang, Caoxing;Yong, Qiang
木质纤维素预处理旨在消除生物质的天然可降解性。木质纤维素原料在不同的预处理工艺中会发生化学和形态的变化。为了弄清楚为什么酸预处理和硫酸盐蒸煮的竹剩余物显示出非常不同的酶消化率，预处理的竹剩余物的表面性质进行了表征在这项工作中。结果发现，分析的表面特性被认为是与预处理样品的每个相应的酶消化率。预处理后竹渣的zeta电位与酶解效率呈负相关。牛皮纸煮基板被发现波塞的疏水性较低，并表现出较高的酶转化比基板，稀硫酸预处理。表面可及性分析（BET和直接红染色）表明，较高的酶效率的牛皮纸煮材料主要是由于更大的纤维素表面积比酸预处理的材料。结果再次确认，不同的预处理创建各种表面特性，导致预处理和酶水解的想法，可以有利地转向，以最大限度地从竹渣中回收碳水化合物。
Lignocellulosics pretreatment is intended to dismantle biomass' natural recalcitrance. Chemical and morphological changes of lignocellulosic materials would occur through varying pretreatment processes. In order to figure out why the acid-pretreated and Kraft-cooked bamboo residues showed very different enzymatic digestibility, the surface properties of pretreated bamboo residues were characterized in this work. It was found that analyzed surface properties were considered to be associating with each corresponding enzymatic digestibility of the pretreated samples. The zeta potentials of pretreated bamboo residues have a negative correlation with enzymatic efficiency. Kraft-cooked substrates were found to posse a less hydrophobic nature and demonstrated higher enzymatic conversion than substrates that were dilute sulfuric acid pretreated. The surface accessibility analysis (BET and Direct Red staining) revealed that the higher enzymatic efficiency of Kraft-cooked materials was mostly due to the larger cellulosic surface area than that in acid-pretreated materials. The results re-affirm that different pretreatments create a variety of surface characteristics, leading to the idea that pretreatment and enzymatic hydrolysis can be favorably turned to maximize carbohydrate recovery from bamboo residues.