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Method for fermentative production of alcohol

A technology of alcohol and clear liquid, applied in fermentation, biofuel, etc., can solve the problems of high cost and low production efficiency, and achieve the effects of reducing the inhibition of yeast, saving costs and increasing ethanol content

Inactive Publication Date: 2016-07-13
COFCO BIOCHEM ENERGY ZHAODONG +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The energy saving of my country's alcohol production enterprises is traditional, and it is necessary to add a large amount of acid and alkali to adjust the pH value during production, and the production efficiency is low and the cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] This embodiment is used to illustrate the method for producing alcohol by fermentation of the present invention.

[0041] (1) Grind 1 ton of degerminated corn with a particle size of 70% and pass it through a 20-mesh sieve, then mix it with water and 85°C, a clear liquid with a dry matter concentration of 6% by weight (weight ratio 1:0.3) to prepare a dry matter concentration of 30% The slurry (pH value is 5.2) by weight %;

[0042] (2) Add 0.07kg of Novozymes high-temperature-resistant amylase to the slurry and liquefy at a temperature of 80°C for 2 hours to obtain liquefied mash;

[0043] (3) Regulating the pH value of the liquefied mash with a concentration of 40% sulfuric acid is 4.6, and then inoculates Angelica Saccharomyces (the inoculum size is 0.1% of the volume of the liquefied mash);

[0044] (4) Add 0.12kg of acid protease (Novozymes protease), 0.002kg of yeast promoter and 1.1kg of glucoamylase to the liquefied mash after yeast inoculation and ferment for ...

Embodiment 2

[0046] This embodiment is used to illustrate the method for producing alcohol by fermentation of the present invention.

[0047] (1) Grind 1 ton of degerminated corn with a particle size of 76% and pass it through a 20-mesh sieve, then mix it with water and 85°C, a clear liquid with a dry matter concentration of 4% by weight (weight ratio 1:0.4) to prepare a dry matter concentration of 31 The slurry (pH value is 5.4) by weight %;

[0048] (2) Add 0.08kg of Novozymes high-temperature-resistant amylase to the slurry and liquefy at a temperature of 82°C for 3 hours to obtain liquefied mash;

[0049] (3) Regulate the pH value of the liquefied mash with a concentration of 40% to be 4.6, then inoculate Angelica super wine yeast (the inoculum size is 0.2% of the volume of the liquefied mash);

[0050] (4) Add 0.15kg of acid protease (Novozymes protease), 0.005kg of yeast promoter and 0.9kg of glucoamylase to the liquefied mash after inoculating yeast, and ferment for 68 hours at a t...

Embodiment 3

[0052] This embodiment is used to illustrate the method for producing alcohol by fermentation of the present invention.

[0053](1) Grind 1 ton of degerminated corn with a particle size of 85% and pass it through a 20-mesh sieve, then mix it with water and 85°C, a clear liquid with a dry matter concentration of 6% by weight (weight ratio 1:0.3) to prepare a dry matter concentration of 32 The slurry (pH value is 5.0) by weight %;

[0054] (2) Add 0.09kg of Novozymes high-temperature-resistant amylase to the slurry and liquefy at a temperature of 85°C for 3.5 hours to obtain liquefied mash;

[0055] (3) Regulating the pH value of the liquefied mash with a concentration of 40% sulfuric acid is 4.8, and then inoculates Angelica super wine yeast (the inoculum size is 0.1% of the volume of the liquefied mash);

[0056] (4) Add 0.17kg of acid protease (Novozymes protease), 0.0035kg of yeast promoter and 0.85kg of glucoamylase to the liquefied mash after inoculating the yeast, and fe...

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Abstract

The present invention relates to a method for fermentative production of alcohol, and the method is as follows: (1) crushing degermed corn to a particle size of 70-85%, and sieving by a 20 mesh sieve, and mixing with water and a clear solution to obtain powder slurry with dry matter concentration of 30-32 wt. %; (2) adding amylase into the powder slurry for liquefying to obtain liquefied mash; (3) adjusting the pH of the liquefied mash to 4.2-4.8, then inoculating saccharomycetes; and (4 ) adding an acidic protease, a yeast accelerator and glucoamylase into the liquefied mash inoculated with the saccharomycetes for fermentation, wherein the clear solution is a supernatant obtained by centrifugation of waste mash of the bottom of a crude tower in the edible alcohol production process. Ethanol content in a fermentation liquid obtained by the method can be as high as 15% or more by weight.

Description

technical field [0001] The invention relates to a method for producing alcohol by fermentation. Background technique [0002] Alcohol is an important industrial raw material widely used in food, medicine, chemical industry, scientific research and other fields. Due to the impact of the economic crisis and the emergence of the energy shortage problem caused by the world oil crisis, alcohol, as a new energy source instead of petroleum, can effectively alleviate the energy shortage problem of the current oil crisis. With the development of the national economy, my country's alcohol production has made great progress. Nowadays, the number of alcohol production enterprises is increasing, and the annual output has ranked third in the world. However, the challenges and problems faced by the development of the alcohol industry are also increasing. more and more. [0003] At present, many alcohol enterprises in our country still use relatively traditional production technology, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P7/06
CPCY02E50/10
Inventor 刘劲松谷立秋刘辉宫殿良郭福阳金明亮杨树洲董克芝邵洪福李志宇王泽兴沈乃东张宏嘉岳国君
Owner COFCO BIOCHEM ENERGY ZHAODONG
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