组合预处理对橡实壳组成及酶解转化的影响  

Effect of Pretreatment on Composition and Enzymatic Hydrolysis of Acorn Hull

作　　者：潘丕克[1,2] 于海龙[1] 唐勇[1] 宋先亮[1] 蒋建新[1] 

机构地区：[1]北京林业大学材料科学与技术学院,北京100083 [2]辽宁省森林经营研究所,辽宁丹东118002

出　　处：《林产化学与工业》2015年第2期91-96,共6页Chemistry and Industry of Forest Products

基　　金：科技部国际合作项目(OS2014GR0444);国家自然科学基金资助项目(31070510)

摘　　要：为脱除果壳类原料中的半纤维素和木质素,减少其对纤维素酶的无效吸附,提高酶解转化率。采用蒸汽爆破、Na OH、碱性H2O2及其组合预处理方法,研究不同方法对橡实(蒙古栎种子)壳组成及酶解转化的影响。结果表明,经过2.25 MPa蒸汽爆破预处理后,橡实壳半纤维素由26.81%降低至5.79%,半纤维素脱除率达87.28%,酶水解120 h后葡萄糖得率由10.32%提高至38.36%。橡实壳蒸汽爆破组合氢氧化钠处理后,木质素脱除率可达54.29%。而蒸汽爆破组合碱性H2O2处理后,酶解120 h葡萄糖得率可达76.65%,是未处理橡实壳的7.4倍。The pretreatments of steam explosion, sodium hydroxide, alkaline peroxide and the coupling were used to remove the hemieellulose and lignin in acorn hull and increase the glucose yield. The hemicellucose in acorn hull decreased from 26.81% to 5.79% with a removal of 87.28% with 2.25 MPa steam explosion pretreatment. However, the glucose yield increased from I0. 32% to 38.36% after enzymatic hydrolysis for 120 h. The lignin removal was 54.29% after pretreating acorn hull by 2.25 MPa steam explosion coupled with sodium hydroxide. The glucose yield was 76.65% obtained from acorn hull pretreated with 2.25MPa steam explosion and alkaline peroxide. It was 7.4 times of that from raw acorn hull untreated.

关 键 词：橡实壳 蒸汽爆破 氢氧化钠 碱性过氧化氢 酶水解 

分 类 号：TQ35[化学工程]