摘要
为了达到利用腐烂葡萄生产乙醇的目的,通过气相色谱法对发酵过程中顶空气体成分进行分析.研究了气体成分变化对乙醇产生量的影响.实验表明:为了保证乙醇的增长趋势,必须在氧气和二氧化碳的相对含量比值小于2时,补加空气使氧气和二氧化碳的相对含量比值达到3.5左右.酿酒酵母BDX的生长期为7,d,第5天补加空气调整顶空气体成分,第7天发酵液中乙醇的含量可以达到7%以上.
Headspace gas in the fermentation process was analyzed with gas chromatography to optimize the methods for ethanol production by fermentating fruit and vegetable waste. Influence of the gas composition on the ethanol production was analyzed. Experiments show that in order to produce as much ethanal as possible, when the relative ratio of oxygen to carbon dioxide is below 2, air should be added to make the relative ratio of oxygen to carbon dioxide up to about 3.5. The growing period of Saccharomyces cerevisiae BDX is 7 days. The ethanol content on the 7th day in the fermentation broth could be more than 7% when the air is supplied on the 5th day to adjust the headspace gas composition.
出处
《天津科技大学学报》
CAS
2013年第4期5-9,共5页
Journal of Tianjin University of Science & Technology
基金
天津科技大学实验室基金(1188A312)
关键词
腐烂葡萄
气相色谱
六通阀进样
顶空气体
乙醇
发酵液
rotten grapes
gas chromatography
six-wayvalve injection
headspace gas
ethanol
fermentation broth
