木薯粉与玉米粉混合发酵产乙醇试验研究
2015-07-13雷宇王应中赵春雷等
雷宇 王应中 赵春雷等
摘要[目的]优化木薯粉与玉米粉混合发酵工艺,提高最终出酒率。[方法]研究了添加少量玉米粉以及木薯与玉米粉大比例配合对产生乙醇的影响。[结果]试验表明,添加1.0%玉米粉时效果最优,出酒提高率最大,由此说明将玉米作为助剂添加时,有利于提高木薯乙醇出酒率;当木薯与玉米粉的质量比为9∶1时,出酒率最高,同时出酒率提高最大,即木薯与玉米粉最佳配比为9∶1。[结论] 研究结果对于木薯、玉米产量都较多的国家或地区发展燃料乙醇具有重要意义。
关键词玉米;木薯;混合发酵;乙醇;出酒率
中图分类号S188+.4文献标识码
A文章编号0517-6611(2015)07-287-03
Study on Producing Ethanol by Cassava Flour and Corn Powder Mixed Fermentation
LEI Yu1,2, WANG Ying-zhong2, ZHAO Chun-lei1,2, HUANG Wen-rong1,2* et al (1. Yunnan Innovative Biological Industry Incubator Management Co. Ltd, Kunming, Yunnan 650117; 2. Yunnan Wonfine Bio-technology Co. Ltd., Kunming, Yunnan 650117)
Abstract [Objective] To optimize cassava flour and corn flour mixed fermentation process, improve yields of ethanol. [Method] Effects of adding small amount of corn flour, and high proportion mixing of cassava flour and corn powder on ethanol were studied. [Result] The results showed that optimal effect was observed if one percent corn flour mixed with cassava flour, which indicated the additive corn can improve the yields of ethanol; the highest production occurred when cassava and corn flour were mixed at the proportion of 9∶1 (mass ratio). Therefore, the best ratio between cassava and maize flour was 9∶1. [Conclusion] The study has significance on developing ethanol in countries and regions with high yield of cassava and corn.
Key words Corn; Cassava; Mixed fermentation; Alcohol; Ethanol production
木薯和玉米作为酒精发酵原料优势相当,想要有更广阔的发展空间,两者都还有很多问题亟待解决[1]。木薯和玉米是目前世界上酒精生产最主要的2种原料,笔者试图将两者混合发酵,避免单一发酵存在的某些问题,使之与酵母的配合达到最佳,发挥出最大优势,从而提高最终出酒率。
混合发酵可以避免单一原料发酵的某些不利因素,原料间相互促进,提高出酒率。国内外有过混合原料发酵的相关报道,易弋等对木薯粉与甘蔗糖蜜混合发酵生产柠檬酸的研究表明,混合发酵避免了甘蔗糖蜜黏度大、不适合直接用于柠檬酸发酵等缺点,使糖蜜能最大限度地用于柠檬酸发酵,最终确定了木薯粉与糖蜜混合发酵的最佳配比为9∶1[2]。陈勇等发明了一种淀粉质原料与甘蔗汁混合发酵生产……
