摘要
研究并改进了传统的分段水解与发酵工艺(SHF)流程,提高了发酵液中乙醇质量浓度。通过5次快速循环,提高了工艺过程中的酶解和发酵效率;新工艺发酵液中乙醇质量浓度最高达到26.4 g/L(主循环中的循环1),主循环的平均乙醇质量浓度达到25.3 g/L,比原工艺的19.6 g/L分别提高了34.7%和29.1%;酶解时间120 h,比原工艺缩短了28.7%;发酵时间150 h,比原工艺缩短了10.7%;每千克玉米秸秆的纤维素酶和木聚糖酶添加量分别为101 mL和123 mL,比原工艺分别降低了36.9%和29.7%,酵母菌的使用量为27 mL,比原工艺降低了40%。新工艺有效提升了酶解和发酵效率,对后续研究具有借鉴意义。
The purpose of this study was to improve the traditional subsection hydrolysis and fermentation process(SHF),and to get a higher ethanol production.By five rapid cycles of SHF process,the efficiency of hydrolysis and fermentation were raised.The highest ethanol production in fermentation liquor of the whole process reached 26.4 g/L(main cycle 1),and the average ethanol production of the main cycle reached 25.3 g/L,which increased by 34.7% and 29.1% compared to the traditional technology(19.6 g/L)respectively.The hydrolysis time and fermentation time were 120 h and 150 h respectively,which reduced by 28.7%and 10.7%over the traditional technology respectively.The addition of cellulase and xylitolase were 101 mL and 123 mL in 1 kg corn stover,which lowed 36.9%and 29.7%than the traditional one respectively.The consumption of yeast was 27 mL,which was 40%lower than original process.The new process improved the efficiency of enzymatic hydrolysis and fermentation,which could provide reference value for subsequent research.
作者
陈胜杰
高翔
袁戎宇
CHEN Shengjie;GAO Xiang;YUAN Rongyu(Guangdong Cleamol Technology Co.,Ltd.,Foshan 528000,China)
出处
《发酵科技通讯》
CAS
2020年第1期32-36,53,共6页
Bulletin of Fermentation Science and Technology
