Research on Alcohol Fermentation from Filtrated Liquid of Cassava Liquefied Mash

In order to reduce the viscosity of fermentation broth in high-gravity alcohol fermentation from cassava,the hydrolyzed cassava was filtered and the residue was washed by water.The change of viscosity before and after the filtration were measured,and the recovery rate of sugar was investigated.Then the filter was fermented to produce alcohol.The results showed that the viscosity was greatly reduced after the filtration.The recovery rate of sugar reached 99.3 % as the ratio of material and water was 1∶2.9.The fermentation efficiency of the filtrate improved by 4.4 % on average than that not treated by filtration.