Soaking process for preparing corn starch

A technology of corn starch and process, which is applied in the field of starch production, can solve problems such as health hazards, large environmental pollution, and large sewage discharge, and achieve the effects of reducing investment, reducing corrosion, and increasing yield

Inactive Publication Date: 2015-04-29
河南飞天生物科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the traditional process, corn soaking with sulfurous acid or sodium bisulfite solution is used to break the -S-S- bond of the protein and break the protein network in the corn kernel, thereby releasing the starch wrapped in it, but the traditional soaking process The soaking time is generally 48-60 hours, resulting in a long production process, high cost, low efficiency, high energy consumption, large amount of sewage, and a large amount of sulfurous acid decomposed to generate SO2, which greatly pollutes the environment and poses a threat to people's health. harm

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] The soaking process for preparing cornstarch in this example includes the following steps: (1) One-time soaking: put corn kernels into the soaking tank, then add sulfurous acid solution to the soaking tank, the mass percentage concentration of sulfurous acid in the soaking tank 0.08%, the temperature of the soaking liquid in the soaking tank is 50°C, soak for 5 hours to obtain a primary soaking liquid; (2) inoculate lactic acid bacteria: add corn total 4% lactic acid bacteria, the fermentation time is 4 hours, the fermentation temperature is 33 ℃, and the fermentation liquid is obtained; (3) Coarse crushing: the secondary soaking liquid is filtered through a gravity sieve to remove the fermentation liquid, and then the corn meal is crushed through the crushing system Perform secondary crushing to keep the corn grains broken into 6 petals, (4) secondary soaking: add 0.1% cellulase and 0.2% acid protease of the total amount of corn to the fermentation broth prepared in the...

Embodiment 2

[0013] The soaking process for preparing cornstarch in this example includes the following steps: (1) One-time soaking: put corn kernels into the soaking tank, then add sulfurous acid solution to the soaking tank, the mass percentage concentration of sulfurous acid in the soaking tank 0.1%, the temperature of the soaking liquid in the soaking tank is 52°C, soak for 6 hours to obtain a primary soaking liquid; (2) inoculate lactic acid bacteria: add corn total 6% lactic acid bacteria, the fermentation time is 6 hours, the fermentation temperature is 38 ℃, and the fermentation liquid is obtained; (3) Coarse crushing: the secondary soaking liquid is filtered through a gravity sieve to remove the fermentation liquid, and then the corn meal is crushed through the crushing system Perform secondary crushing to keep the corn grains broken into 8 petals, (4) secondary soaking: add 0.3% cellulase and 0.5% acid protease of the total amount of corn to the fermented liquid prepared in the st...

Embodiment 3

[0015] The soaking process for preparing cornstarch in this embodiment is characterized in that it includes the following steps: (1) one-time soaking: put corn kernels into a soaking tank, then add sulfurous acid solution to the soaking tank, the mass of sulfurous acid in the soaking tank The percentage concentration is 0.09%, the temperature of the soaking liquid in the soaking tank is 51°C, and soaking for 5.5 hours to obtain a primary soaking liquid; (2) Inoculation of lactic acid bacteria: Into the primary soaking liquid prepared in the step (1) Add lactic acid bacteria with 5% of the total amount of corn, ferment for 5 hours, and ferment at 35°C to obtain a fermented liquid; (3) Coarse crushing: filter the secondary soaking liquid through a gravity sieve to remove the fermented liquid, and then pass the crushing system to Secondary crushing of corn meal to keep corn grains broken into 7 petals, (4) Secondary soaking: add 0.2% of the total amount of corn cellulase and 0.4% ...

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PUM

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Abstract

The invention discloses a soaking process for preparing corn starch. The soaking process comprises the following steps: (1) performing primary soaking; (2) inoculating lactic acid bacteria to obtain fermentation liquor; (3) performing coarse crushing; (4) performing secondary soaking, namely adding cellulase and acid protease into the prepared fermentation liquor, keeping temperature for 4-6 hours at the temperature of 48-52 DEG C, and executing a starch production process, wherein the cellulase accounts for 0.1-0.3 percent of total weight of corn, and the acid protease accounts for 0.2-0.5 percent of total weight of the corn. In the corn soaking process, the corn soaking time can be shortened, the yield of the corn starch can be increased from about 68 percent to about 69.5 percent, and the economical benefit is remarkable.

Description

technical field [0001] The invention belongs to the field of starch production, and in particular relates to a soaking process for preparing corn starch. Background technique [0002] Corn is one of the three major food crops in the world. Its product corn starch has excellent characteristics and is widely used in various fields. At present, its application in food, medical treatment, beverages, etc. accounts for about two-thirds of the total starch in the world. About one third are used in papermaking, packaging, textiles, petroleum, etc. In recent years, the corn starch industry has developed into a worldwide emerging industry, and is widely used in the production of alcohol in the United States and other regions. More than 90% of the world's starch comes from corn. [0003] my country is a big corn planting country. As my country's largest agricultural province, the largest grain production province, and the largest grain transformation and processing province, Henan Pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B30/02
Inventor 李林海董得平陈金强赵桂强杨保军宋海鹏
Owner 河南飞天生物科技股份有限公司
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