加压或超临界溶剂对乙醇发酵和在线萃取分离的影响

Effects of compressed or supercritical solvents on ethanol fermentation and/or in-situ extraction

压缩或超临界流体作为良好的萃取溶剂,在食品加工与保藏、制药和生物材料加工等领域有广阔的应用前景。在简要论述了压缩或超临界流体对微生物存活与催化活性影响的基础上,详细综述了近年来采用超临界溶剂进行乙醇发酵与在线萃取分离过程取得的新进展,特别是装置结构设计和过程优化方面的新成果。最后探讨了实现过程规模化需要深入开展的关键性问题。

Compressed or supercritical fluids are excellent extraction solvents. They have got wide applications in food processing and storage, medicine making, as well as biomaterials processing. The effects of compressed or supercritical fluids, especially carbon dioxide, on the viability and catalytic activity of microorganisms were discussed briefly. The progress in the fermentation of ethanol under pressure and/or in-situ supercritical extraction was thus reviewed. The discussion was concentrated on the novel design of equipment structure as well as process optimization for the purpose of the reduction of the negative effect of high-pressure environment on microorganisms. Finally, some key topics were addressed, which would be crucial to the large-scale application of this integrated process.