| 摘要 |
An improved ethanol fermentation process with decreased use of acidifiers by adding a composition containing an aldehyde, a fatty acid, a terpene and a surfactant. The method comprising: a) mixing a fermentation feedstock with a fermentation broth containing yeast and/or an enzyme, b) treating said mixture by adding a composition to the fermentor containing: - 90 wt. % of an antimicrobial aldehyde, preferably selected from the group consisting of formaldehyde, para-formaldehyde, glutaraldehyde, and mixtures thereof, 1 - 50 wt. % of a surfactant having an HLB from 4 to 18, 0 - 20 wt. % of an antimicrobial terpene, or essential oils, 1 - 50 wt. % of organic acids selected from C1 to C24 fatty acids, their salts, glycerides and esters thereof, and 1 - 50 wt. % water; wherein the concentration of aldehyde in the fermentor is from about 0.25 to 3 kg/MT of fermentation feedstock, and c) isolating ethanol and improving yield. |
