文献类型：期刊文献

英文题名：Enhanced enzymatic hydrolysis of rice straw via pretreatment with deep eutectic solvents-based microemulsions

作者：Gao, Jing[1]; Chen, Cuili[1]; Lin, Yanping[1]; Zhang, Lili[1]; Ji, Hongwu[1]; Liu, Shucheng[1]

机构：[1] College of Food Science and Technology, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Aquatic Products Processing and Safety, Key Laboratory of Advanced Processing of Aquatic Products of Guangdong Higher Education Institution, Zhanjiang, 524088, China

年份：2020

卷号：10

外文期刊名：Bioresource Technology Reports

收录：EI(收录号：20211010031973)、Scopus(收录号：2-s2.0-85080101050)

语种：英文

外文关键词：Hydrogen bonds - Lactic acid - Molar ratio - Enzymatic hydrolysis - Ionic liquids - Cyclohexane - Eutectics - Glucose

外文摘要：In this study, four deep eutectic solvents (DESs) were used as cheaper and "greener" alternatives to ionic liquids (ILs) to create novel microemulsions. Compared with 1-ethyl-3-methyl imidazolium acetate ([Emim]Ac), the DESs of lactic acid:glucose:water and lactic acid:fructose:water (molar ratio = 5:1:3) comprising acid hydrogen-bond donor (pKa = 3.86) showed stronger capability to form the microemulsions with Tween 20, methanol and cyclohexane. After the pretreatment of rice straw at 70 °C for 12 h by using the microemulsions (mass ratio of DES, Tween 20/methanol, cyclohexane = 0.1:0.8:0.1), 54.3% of lignin was removed, and the crystalline structure was significantly disrupted. When the content of DES (lactic acid:glucose:water) increased to 50%, the sugar yield of the residues was increased to 88.1%, which was 3 times than that of untreated one. Moreover, the enzymatic hydrolysis of the residues is linearly and positively correlated with the delignification abilities of the DES microemulsion. ? 2020 Elsevier Ltd