助剂强化碱预处理对玉米秸秆酶解糖化的影响  

Effects of alkaline pretreatment enhanced by additives on the enzymatic saccharification of corn straw

作　　者：迟聪聪[1,2] 柳咪 来贤 陈思拓 

机构地区：[1]陕西科技大学轻工科学与工程学院陕西省造纸技术与特种纸品开发重点实验室,陕西西安710021 [2]齐鲁工业大学制浆造纸科学与技术教育部重点实验室,山东济南250353 [4]北京印钞有限公司,北京100054

出　　处：《陕西科技大学学报（自然科学版）》2016年第3期22-27,共6页Journal of Shaanxi University of Science & Technology

基　　金：陕西省科技厅自然科学基础研究计划青年人才项目(2015JQ3077);教育部高等学校博士学科点专项科研基金项目(20126125120002);齐鲁工业大学制浆造纸科学与技术教育部重点实验室开放基金项目(KF201401);陕西科技大学博士科研启动基金项目(BJ11-18)

摘　　要：在前期研究的基础上,探讨了不同助剂强化碱预处理对玉米秸秆酶解糖化效果的影响.研究结果表明,玉米秸秆经过氧化氢(H_2O_2)或吐温(Tween)-80强化碱预处理后,其提取液的固形物含量均随助剂用量的增加而增加,木糖得率也基本呈上升趋势,且预处理后底物的酶水解糖得率(对原料总糖)也有不同程度的上升.在一定条件下,助剂用量或碱浓越高,预处理及酶水解转化过程的总糖得率越高,对应原料失重也越高.综合考虑助剂用量、成本及效果等因素,吐温-80强化碱预处理效果相对较好.The effects of alkaline pretreatment enhanced by additives on the enzymatic sac-charification of corn straw were analyzed based on previous study.Results show that the solid content in the extract is higher for higher additive dosage,while the variation trend of xylose yield is increased for the alkaline pretreatment enhanced by two additives,H2 O2 or Tween-80.The sugars yield （based on the total carbohydrates in raw materials）of pretreated sub-strate shows different degree of rise after enzymatic hydrolysis.Under certain conditions,the total reducing sugar yield and weight loss are higher for higher additive dosage or alkali con-centration.Finally considering all factors,including the additive dosage,the cost,the efficien-cy of enzyme hydrolysis and so on,the pretreatment of NaOH＋Tween-80 exhibits a relative-ly better effect.

关 键 词：玉米秸秆 碱预处理 酶解糖化 过氧化氢 吐温-80 

分 类 号：TQ353[化学工程]