高粘度薯类原料高效乙醇转化技术推动我国能源结构调整  

Technology of High-performance Fermentation from Tubers with High Viscosity for Bioethanol Production Promote the Adjustment of China's Energy Structure

作　　者：赵海[1] 靳艳玲[1] 方扬[1] 何开泽[1] 黄玉红[1] 沈维亮[1] 和智明 万明 肖瑶[1] 陈谦[1] 

机构地区：[1]中国科学院成都生物研究所,成都610041 [2]云南省轻工业科学研究院,昆明650034 [3]资中县银山鸿展工业有限责任公司,内江641200

出　　处：《科技促进发展》2016年第1期35-40,共6页Science & Technology for Development

摘　　要：原料粘度高已成为限制薯类乙醇行业发展的问题,中国科学院成都生物研究所采用糖苷键单克隆抗体芯片技术阐明薯类原料粘度成因机制,并开发出具有自主知识产权的降粘酶系和相应的降粘预处理工艺;利用模拟的工业发酵压力条件,选育获得高产物反馈抑制耐性菌株;同时与发酵过程调控工艺、新型高传质反应器系统集成,建立薯类乙醇高效发酵技术体系并成功应用于生产,实现薯类乙醇发酵三大技术突破。High viscosity of fermentation mash and feedback inhibition of ethanol to fermentative microorganism are the bottleneck of ethanol fermentation from tubers, which lead to low efficiency, high energy consumption and large quantity of vinasse and wastewater.To solve the problems, viscosity reduction mechanism was investigated by Comprehensivemicroarray polymer profiling（Co MPP） in roots and tubers during the viscosity reducing process by Chengdu Institute of Biology, Chinese Academy of Sciences. According to the mechanism, viscosity reduction enzymes and techniques with proprietary intellectual property rights were developed. Multiple tolerance strain was selected under simulant industrial fermentation conditions. High-performance fermentation technology was developed by integrating viscosity reduction technique, multiple tolerance strain, fermentation process control technique and novel fermentor. Three breakthroughs, fermentation from tubers with high viscosity, rapid fermentation, and very high gravity fermentation, were made. Then, viscosity of fermentation mash was reduced by 90%, water consumption was reduced by 70%, fermentation efficiency was enhanced from 88% to 90%, fermentation time was decreased from 60 h to 30 h, ethanol concentration was increased from 5-6% to 12.41, and distillation energy consumption was saved by 40%.

关 键 词：高粘度 薯类 乙醇 

分 类 号：TQ223.122[化学工程—有机化工] TQ920.6[轻工技术与工程—发酵工程]