Method for reducing microbiological indicators of corn starch

A technology of corn starch and microorganisms, which is applied in the field of corn starch, can solve the problems of changing the properties of corn starch, destroying the internal structure of starch, reducing product competitiveness, etc., achieving the effect of reducing production costs, ensuring structure and properties, and avoiding reprocessing of finished products

Active Publication Date: 2022-02-18
山东福洋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

[0004] At present, some people have studied the method of re-sterilizing finished starch to obtain low-bacteria starch products, but the internal structure of starch will be destroyed during the sterilization process, thereby further changing the properties of corn starch. While affecting the product process of downstream customers, it also increases corn starch. The production cost of processing reduces the competitiveness of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for reducing cornstarch microbial indicators, comprising the following steps:

[0023] (1) The washing water acts on ozone in the ozone pool for 15 minutes;

[0024] (2) the washing water after the action of ozone is installed with 6 1.6 meters long, power is the water delivery pipeline of the ultraviolet lamp tube of 300w;

[0025] (3) The washing water further enters the ultrafiltration system and is filtered through a 0.02 μm ultrafiltration membrane;

[0026] (4) Warm the filtered washing water to 80°C for 10 minutes;

[0027] (5) 25% reverse osmosis water with a conductivity of 400uS / cm was mixed in the washing water, and the pH of the 12-stage outflow bottom material was adjusted to 5.8;

[0028] (6) During the transportation of starch milk, the concentration of ozone introduced into the pipeline is 0.5mg / L;

[0029] The total number of cornstarch colonies obtained is 3000CFU / g, Escherichia coli is less than 0.3MPN / g, and mold is 70CFU / g.

Embodiment 2

[0031] A method for reducing cornstarch microbial indicators, comprising the following steps:

[0032] (1) The washing water acts on ozone in the ozone pool for 20 minutes;

[0033] (2) The washing water after the action of ozone is installed with 8 water pipelines with a length of 1.6 meters and a power of 300w long ultraviolet lamp tubes;

[0034] (3) The washing water further enters the ultrafiltration system and is filtered through a 0.02 μm ultrafiltration membrane;

[0035] (4) Warm the filtered washing water to 90°C for 10 minutes;

[0036] (5) Mix 30% reverse osmosis water with a conductivity of 400uS / cm in the washing water, and adjust the pH of the 12-stage outflow bottom material to 5.6;

[0037] (6) During the transportation of starch milk, the concentration of ozone introduced into the pipeline is 0.8mg / L;

[0038] The total number of cornstarch colonies obtained is 2200CFU / g, Escherichia coli is less than 0.3MPN / g, and mold is 45CFU / g.

Embodiment 3

[0040] A method for reducing cornstarch microbial indicators, comprising the following steps:

[0041] (1) The washing water acts on ozone in the ozone pool for 1 min;

[0042] (2) The washing water after the action of ozone is installed with a water delivery pipeline with 1 meter long and 100w ultraviolet lamps;

[0043] (3) The washing water further enters the ultrafiltration system and is filtered through a 0.02 μm ultrafiltration membrane;

[0044] (4) Warm the filtered washing water to 50°C for 5 minutes;

[0045] (5) Mix 10% reverse osmosis water with a conductivity of 100uS / cm in the washing water, and adjust the pH of the 12-stage outflow bottom material to 5.85;

[0046] (6) During the transportation of starch milk, the concentration of ozone introduced into the pipeline is 0.1mg / L;

[0047] The total number of cornstarch colonies obtained was 3400CFU / g, Escherichia coli was less than 0.3MPN / g, and mold was 85CFU / g.

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PUM

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Abstract

The invention discloses a method for reducing microbiological indicators of corn starch, and belongs to the technical field of corn starch. The invention discloses a method for reducing microbial indicators of corn starch, and the method comprises ozone treatment, ultraviolet treatment, filtration and temperature control for reducing the microbial indicators of washing water. Reverse osmosis water is added into washing water, so that the buffering capacity of the water is reduced, and pH regulation and control are facilitated; ozone is introduced into a pipeline for conveying starch milk, so that the microbiological indicators of the material is reduced. According to the method disclosed by the invention, no pollution is caused in the production process, the use is convenient, the effect is obvious, and the microbiological indicators in the obtained corn starch can be effectively controlled below the national hygienic standard requirement of edible corn starch.

Description

technical field [0001] The invention relates to the technical field of corn starch, in particular to a method for reducing the microbial index of corn starch. Background technique [0002] Corn starch, also known as Yushuli starch, is a white powder with a slight yellowish tinge. It is the basic raw material for processing starch sugar, amino acid, modified starch, sodium gluconate and beer. It also plays an important role in industrial production such as papermaking and textiles. It plays an important role and is widely used in various fields of food and industry. [0003] There are two processing methods of corn starch, wet method and dry method. Compared with dry method to produce corn starch, wet extraction can obtain higher purity corn starch, and can also separate and purify corn protein, germ, and fiber well. and other components, so manufacturers generally use wet preparation to achieve industrialized large-scale production of corn starch. Wet production is obtaine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L2/20C02F9/08A61L101/10
CPCA61L2/202C02F9/00C02F1/32C02F1/444C02F1/441
Inventor 不公告发明人
Owner 山东福洋生物科技股份有限公司
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