Key Laboratory of Forestry Genetics & Biotechnology (Nanjing Forestry University), Ministry of Education, Nanjing 210037, People's Republic of China; Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, People's Republic of China; Jiangsu Province Key Laboratory of Green Biomass-based Fuels and Chemicals, Nanjing 210037, People's Republic of China.
Key Laboratory of Forestry Genetics & Biotechnology (Nanjing Forestry University), Ministry of Education, Nanjing 210037, People's Republic of China; Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, People's Republic of China; Jiangsu Province Key Laboratory of Green Biomass-based Fuels and Chemicals, Nanjing 210037, People's Republic of China.
Bioresour Technol. 2020 Jul;307:123200. doi: 10.1016/j.biortech.2020.123200. Epub 2020 Mar 17.
Increasing attention has been paid to the production of high value-added products from lignocellulosic biomass. This study aims to valorize corncob, utilizing it as feedstock for a multi-biorefinery framework, using gluconic acid in the pretreatment. In attempts to maximize yield of xylooligosaccharides, corncob was first subjected to hydrolysis by gluconic acid using response surface methodology, from which the maximum xylooligosaccharides yield of 56.2% was achieved using 0.6 mol/L gluconic acid at 154 °C for 47 min. Results indicated that gluconic acid was an effective solvent for xylooligosaccharides production: a total of 180 g of xylooligosaccharides was obtained from 1 kg corncob as a result of hydrolysis. Moreover, 86.3% conversion of cellulose was achieved from enzymatic hydrolysis of gluconic acid-treated corncob at 10% solids loading. This study presents a strategy for valorizing corncob using it to produce xylooligosaccharides and glucose, which should pave the way for valorizing other agriculture wastes.
人们越来越关注从木质纤维素生物质生产高附加值产品。本研究旨在利用玉米芯作为原料，通过预处理中的葡萄糖酸来构建一个多生物炼制框架，以实现其价值。为了最大限度地提高木低聚糖的产量，我们首先采用响应面法，用葡萄糖酸对玉米芯进行水解，在 154°C 下用 0.6 mol/L 葡萄糖酸反应 47 min，获得了 56.2%的最大木低聚糖得率。结果表明，葡萄糖酸是生产木低聚糖的有效溶剂：通过水解，从 1kg 玉米芯中可获得 180g 木低聚糖。此外，在 10%固载量下，通过对葡萄糖酸处理后的玉米芯进行酶水解，可实现 86.3%的纤维素转化率。本研究提出了一种利用玉米芯生产木低聚糖和葡萄糖的方法，这应为其他农业废料的增值利用铺平道路。
