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Method for performing thick mash alcohol fermentation by using cassava dregs and fresh cassava

A technology for alcohol fermentation and fresh cassava, which is applied in the field of alcohol fermentation using cassava residue and fresh cassava thick mash, can solve the problems of insufficient utilization of residual starch of cassava residue, difficulty in realizing continuous production, low mass transfer efficiency, etc. The effect of equipment utilization, labor productivity reduction, and mass transfer efficiency improvement

Inactive Publication Date: 2010-12-01
GUANGXI UNIVERSITY OF TECHNOLOGY
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AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for fermenting thick mash with cassava dregs and fresh cassava as raw materials, which effectively improves the initial total sugar concentration in the alcohol fermentation of fresh cassava thick mash Problems such as high viscosity of feed liquid, poor fluidity and low mass transfer efficiency, difficulty in realizing continuous production and insufficient utilization of cassava residual starch

Method used

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Embodiment 1

[0018] Embodiment 1: (Laboratory)

[0019] A kind of method utilizing cassava dregs and fresh cassava thick mash alcohol fermentation, comprises the following steps:

[0020] (1) Slurry: In a stainless steel pot with a diameter of 20cm, add 1000g of cassava residue slurry with a particle size of less than 1.5mm and a moisture content of about 86%. Then add 4200 u of α-amylase based on 30 u α-amylase per gram of absolute dry cassava residue;

[0021] (2) Liquefaction and filtration: Stir the slurry, and at the same time, heat the steel pot until the temperature of the slurry is 90°C to 110°C, keep stirring, and keep warm until the slurry turns brownish red in the test of iodine solution. The holding time is generally 40 min to 80 min , Filtrate with 100 mesh nylon filter cloth to obtain a filtrate with a solid content of more than 8% by weight;

[0022] (3) Re-sizing, liquefaction, and filtration: Add cassava residue with a moisture content of about 70% to the above filtrate,...

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Abstract

The invention relates to a method for performing thick mash alcohol fermentation by using cassava dregs and fresh cassava. The method comprises the following steps of: pulping the cassava dregs, adding liquifying enzyme, regulating the pH value, heating to liquefy, filtering, and repeating the technical processes until solid matters of the liquefied filter liquor account for 22 to 25 weight percent; and using the filter liquor as grinding solution for the fresh cassava, making the initial total sugar concentration of the grinded pulp reaches 22.5-24.5 (g / 100ml), and liquefying, sterilizing, saccharifying, performing thick mash fermentation and other processes, and finally obtaining maturely fermented raw spirit with the alcohol of 12.5 percent (v / v) or more. The method effectively improves the initial total sugar concentration in cassava alcohol fermentation, and solves the problems of high feed liquid viscosity, poor liquidity, low mass transfer efficiency and difficult continuous production in the thick mash fermentation process, not full utilization of the cassava dregs produced in the cassava starch production process, and the like.

Description

technical field [0001] The invention relates to a method for fermenting thick mash with cassava dregs and fresh cassava as raw materials. Background technique [0002] Guangxi is the main production area of ​​alcohol production in my country, and cassava is one of the main raw materials for alcohol production. The cost of using cassava chips as a raw material to produce alcohol is relatively high. Generally, fresh cassava is used as a raw material to produce alcohol. The main problem is that the alcohol content of fermented mature mash in general alcohol production enterprises is 9.0% to 9.5% (v / v) , its equipment utilization rate, labor productivity, and energy utilization rate are low, and its production cost is relatively high. The improved method is to use concentrated mash alcohol fermentation, which is characterized by high equipment utilization, low distillation energy consumption, low production cost and easy handling of distiller's grains. The premise of using fre...

Claims

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Application Information

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IPC IPC(8): C12P7/08
Inventor 容元平伍时华廖兰易弋叶云
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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