Method of thick mash alcohol fermentation by using fresh cassava

A technology of alcohol fermentation and fresh cassava, applied in fermentation, biofuel, etc., can solve the problems of low mass transfer efficiency, high viscosity of feed liquid, and poor fluidity, so as to improve mass transfer efficiency, reduce labor productivity, and have good fluidity Effect

Active Publication Date: 2010-01-20
GUANGXI UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for fermenting thick mash alcohol with fresh cassava as raw material, which effectively improves the initial total sugar c...

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  • Method of thick mash alcohol fermentation by using fresh cassava

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Embodiment

[0021] A method for alcohol fermentation using fresh cassava mash includes the following steps:

[0022] (1) Crushing: mixing fresh cassava and washing residue with low-level residual sugar water in a ratio of 1:1 to crush to make the particle size less than 1.5mm; the dry matter content in the slurry is 15%-17%.

[0023] (2) Sizing: Adjust the pH of the slurry to 5.8-6.5 with an acid-base solution, and add 12u of high-temperature resistant α-amylase per gram of absolutely dry tapioca starch fed during the first crushing.

[0024] (3) Liquefaction and filtration: heat the slurry to 90℃~95℃, keep it for 60min~120min, filter with 80 mesh nylon filter cloth to obtain the filtrate, the liquefied liquid; the dry matter content of the filtrate is above 15%; To recover the residual sugar from the filter residue, add 85°C hot water to the filter residue according to the ratio of filter residue: water = 1:10, stir it evenly, keep it at 85°C~90°C for 10 minutes, and filter. The filtrate obtain...

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Abstract

The invention relates to a method of thick mash alcohol fermentation by using fresh cassava, comprising the following steps: preparing fresh cassava which is pulverized for the first time into pulp; heating, liquefying and filtering; washing with hot water and filtering slag out; recycling residual sugar in a filtering slag, wherein filtrate obtained after filtering can be used for the first pulverization of the fresh cassava, the first filtrate can be used as pulverizing liquid in second pulverization of the fresh cassava. Slurry obtained after pulverization is used as row material of the thick mash alcohol fermentation, and the initial total sugar concentration reaches to 23.5-24.5 (g/100mL); and after the procedures of liquefying, sterilization, saccharifying, fermentation, and the like, the obtained final fermentation mature raw spirit part reaches to more than 13.0(v/v). The invention completely uses the fresh cassava as raw material to ferment thick mash to produce alcohol, thereby effectively improving the initial total sugar concentration in the process of the thick mash alcohol fermentation by using the cassava, and solving the problems of big slurry viscosity, bad flowability, low mass transfer efficiency, and the like in the fermentation process. The invention has the advantages of simple process, energy saving, low cost, low waste material production, and the like,and is used for developing circular economy.

Description

【Technical Field】 [0001] The invention relates to a process method for producing alcohol completely by using fresh cassava as raw material through concentrated mash alcohol fermentation. 【Background technique】 [0002] Guangxi is the main producing 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 the fermentation mature mash of general alcohol production enterprises is about 9.5% (v / v). Equipment utilization, labor productivity, and energy utilization are low, and production costs are 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. Th...

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Application Information

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IPC IPC(8): C12P7/06
CPCY02E50/17Y02E50/10
Inventor 容元平伍时华李克林廖兰易弋黄翠姬
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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