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Method for producing alcohol by mixing and fermenting raw materials and cooked materials

A technology of mixed fermentation and alcohol is applied in the field of mixed fermentation of raw meal and clinker to produce alcohol. Fast, easy-to-use effects

Inactive Publication Date: 2012-07-18
上海天之冠可再生能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using a completely non-cooking process, the starch structure of the raw material is not opened, the efficiency of the common commercial enzyme is not high, the saccharification effect is not good, the fermentation time will be prolonged, and the fermentation efficiency will be reduced.
Second, the cost of using enzymes is high
Although special enzymes for raw starch can improve production efficiency, the cost is high
This all restricts the further development of non-cooking alcoholic fermentation process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1): Take 50g of corn flour as the starchy raw material, and divide it into two parts: one part is 40g as raw material I, and the other part is 10g as raw material II.

[0027] a. Take 40g of corn flour as raw material I, add 100g (100ml) of water, that is, the ratio of raw material I to water is 1:2.5, add 8U / g raw material high-temperature liquefied enzyme, cook in a pressure cooker at 105°C for 1 hour, and cool down To 60°C, add 200U / g starchy raw material saccharification enzyme, and keep warm for saccharification for 1 hour.

[0028] b. Take 10g of corn flour as raw material II, add 25g of water, that is, the material-water ratio of raw material II to water is 1:2.5, and add 8U / g of medium-temperature liquefaction enzyme of raw material.

[0029] 2): Mix the above materials.

[0030] 3): Finally, synchronous saccharification and fermentation to produce alcohol: add 200U / g starchy raw material glucoamylase and 0.02% neutral protease based on the weight of raw materi...

Embodiment 2

[0035] 1): Take 100g of corn flour as the starchy raw material, and divide it into two parts: one part is 60g as raw material I, and the other part is 40g as raw material II.

[0036] a. Take 60g of corn flour as raw material I, add 180g (180ml) of water, add 10U / g high-temperature liquefied enzyme of raw material, cook in a pressure cooker at 105°C for 1 hour, cool down to 60°C, and add 200U / g based on the weight of raw material I Glucoamylase for starchy raw materials, heat preservation and saccharification for 1 hour. Then cool down to 32°C.

[0037] b. Take corn flour as raw material II of 40g, add 120g (120ml) of water, add 10U / g of medium temperature liquefaction enzyme of raw material, add 300U / g of glucoamylase of starchy raw material and 0.01% of acid protease based on the weight of raw material II , heat preservation at 60°C for liquefaction and saccharification for 2 hours, and then lower the temperature to 32°C.

[0038] 2): Add the material obtained in step b to...

Embodiment 3

[0044] 1): Weigh 400g of cassava flour and 200g of corn flour as starchy raw materials, of which 400g of cassava flour is used as raw material I, and 200g of corn flour is used as raw material II.

[0045] a. Take 400g of cassava flour raw material I, add 1000g (1L) of water, add 10U / g of raw material high-temperature liquefied enzyme, and cook in a pressure cooker at 105°C for 1 hour.

[0046] b. Take 200g of corn flour raw material II, add 500g (500ml) of water, and add 10U / g of raw material medium temperature liquefaction enzyme.

[0047] 2): Add all the materials obtained in step b to the materials obtained in step a, adjust the temperature to 60°C, add 160U / g starchy raw material glucoamylase calculated based on 400g cassava flour, and 300U / g starch calculated based on 200g corn flour Glucoamylase of high-quality raw materials, and keep warm for saccharification for 1 hour.

[0048] 3): Finally, synchronous saccharification and fermentation to produce alcohol: after cool...

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Abstract

The invention relates to a method for preparing alcohol by mixing and fermenting raw materials and cooked materials. The method comprises the following steps: adding or supplementing saccharified mash obtained by non-cooked raw material fermentation method into liquefied mash or saccharified mash in the traditional cooked alcohol fermentation process, namely dividing starchy materials into two parts, gelatinizing, liquefying and saccharifying one part of starchy materials by the conventional traditional cooking alcohol fermentation method, liquefying and saccharifying the other part of starchy materials by a non-cooked raw material alcohol fermentation method, liquefying or saccharifying the mash of the two processes, mixing and synchronously scaccharifying and fermenting to prepare the alcohol. According to the method, the preparation efficiency is equal to that of the complete cooking alcohol preparation process, equipment is not transformed, the preparation process is simplified partially, energy consumption is reduced partially, and market popularization is facilitated.

Description

technical field [0001] The invention relates to a method for producing alcohol from starchy raw materials, in particular to a method for producing alcohol by mixed fermentation of raw material and clinker. Background technique [0002] The production of alcohol from starchy raw materials has historically used high-temperature cooking and gelatinization liquefaction at a temperature above 120°C. The steam consumed in the cooking section of this method accounts for 30-40% of the total energy consumption of the entire production process. At present, the usual cooking alcohol fermentation process, or the traditional cooking alcohol fermentation method, uses a slightly lower cooking temperature, or spray liquefaction with a water heater (jet liquefaction), and the cooking liquefaction temperature is between 90 and 110 °C, and the time is 60 minutes. above. Practice has proved that the proportion of steam consumed in the cooking section of this method to the total energy consumpt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P7/06C12P19/14C12R1/865
CPCY02E50/17Y02E50/10
Inventor 陈德兆孔翰刘坤周鹏
Owner 上海天之冠可再生能源有限公司
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