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

A technology of ethanol fermentation and raw material fermentation, applied in fermentation, biofuels, etc., can solve problems such as increased energy consumption, increased production costs, and increased ethanol production costs, so as to reduce raw material costs, save energy consumption, and save energy consumption for cooking Effect

Inactive Publication Date: 2003-09-17
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Take 1Kg of rice flour, 5g of glucoamylase, 1g of active dry yeast for high temperature resistant wine (hereinafter referred to as active dry yeast), add 1.8Kg of clean water at 35°C, mix evenly, seal it in a tank, and ferment at 30-40°C for 72 hours. The ethanol content is 14.8% (V / V, the same below), and the rice wine yield is 30% (based on 100% ethanol, the same below). Embodiment two

Embodiment 2

[0019] Take 1Kg of rice flour, 4g of glucoamylase, 0.25g of α-amylase, 1g of active dry yeast, add 1.8Kg of clean water at 35°C, mix evenly, seal it in a tank, ferment at 30-40°C for 72 hours, and the ethanol content of the fermentation liquid is 14.6 %, the yield of rice wine is 29.8%.

Embodiment 3

[0021] Take 1Kg of rice flour, 4g of glucoamylase, 0.25g of α-amylase, 0.3g of acid protease, 1g of active dry yeast, add 1.8Kg of clean water at 35°C, mix evenly, seal the jars, ferment at 30-40°C for 72 hours, and ferment The liquid ethanol content is 15.4%, and the rice yield is 31%.

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P7/06
CPCY02E50/10
Inventor 周兴国曾爱武袁希钢余国琮刘春江刘振
Owner TIANJIN UNIV
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