Superfine grinding of steam-exploded rice straw and its enzymatic hydrolysis |
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| Institution: | 1. Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China;2. Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China;3. State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China;4. State Key Laboratory of Motor Vehicle Biofuel Technology, Henan Tianguan Group Co., Ltd, Nanyang 473000, China;5. Forestry Products Biotechnology/Bioenergy Group, Wood Science Department, University of British Columbia, Vancouver V6T 1Z4, Canada;1. State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China;2. Key Laboratory of Quality & Safety Control for Milk and Dairy Products of Ministry of Agriculture, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China;3. Department of Animal Sciences, The Ohio State University, Columbus, OH 43210, USA;1. School of Civil Engineering and Geosciences, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK;2. Sir Joseph Swan Centre for Energy Research, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK |
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| Abstract: | The combination of low severity steam explosion and superfine grinding has been studied with respect to side products generation and enzymatic hydrolysis efficiency. Chemical compositions, fiber characteristics and composed cells contents in the superfine ground product and the ground residue particles produced by superfine grinding were also studied. At the determined parameters using FJM-200 fluidized bed opposed jet mill, 78% superfine ground steam-exploded rice straw (SERS) products with the mean fiber length of 60 μm were obtained, the particles yield was 179% higher than that from the native rice straw (RS). Enzymatic hydrolysis, chemical composition, fiber characteristics and composed cells proportion of the superfine ground SERS product and the ground residue all show great differences. The difference in enzymatic hydrolysis and structural properties indicates that superfine grinding is a good way to fractionate SERS into easily bio-converted part and difficultly hydrolysed part. |
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