Method of preparing high concentration ethanol fermentation liquid by paddy rice raw material fermentation

Abstract

A process for preparing fermented high-concentration alcohol liquid from raw rice grains includes such steps as pulverizing, sieving by more than 40 meshes, dissolving in water at 34-36 deg.C, addingcomposite enzyme prepared from beta-amylase, alpha-emylase, acidic proteinase, cellulose, xylanase, pectase, phytase and dry yeast, and fermenting at 30-40 deg.C for 60-95 hr. Its advantages are simple process, low cost and high concentration.

Description

technical field [0001] The invention relates to a method for preparing high-concentration ethanol fermentation liquid by fermenting rice raw materials. It belongs to the technology of preparing ethanol by fermentation. Background technique [0002] At present, most of the raw materials used in the production of ethanol by industrial fermentation in my country are corn, sorghum, and rice, and the rice has to go through shelling, cooking, saccharification and re-fermentation, which leads to an increase in production costs. 11%, resulting in increased energy consumption for subsequent distillation, which ultimately increases the production cost of ethanol. Contents of the invention [0003] The object of the present invention is to provide a method for preparing high-concentration ethanol fermentation liquid by fermenting rice raw material. The rice used in the method does not need to be shelled and boiled, and the etha...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the raw materials used in the production of ethanol by industrial fermentation in my country are corn, sorghum, and rice, and the rice has to go through shelling, cooking, saccharification and re-fermentation, which leads to an increase in production costs. 11%, resulting in increased energy consumption for subsequent distillation, which ultimately increases the production cost of ethanol