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Overall treatment method of microorganism in starch and starch derivatives

A starch derivative and comprehensive treatment technology, applied in irradiation, chemistry and other directions, can solve the problems of starch production enterprises with excessive starch microbial indicators, poor adaptability, restricted development, promotion, and application, etc., to reduce starch granule residues, Improve product competitiveness and reduce bacterial growth

Inactive Publication Date: 2010-06-23
广西农垦明阳生化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As food additives, starch and its derivatives can be widely used in various food additives, and are generally produced by wet process routes. However, since starch itself contains carbohydrates and proteins, it is a nutrient-rich substance that provides microorganisms with easy survival and reproduction. environment, such as water, protein, carbon source and suitable temperature, etc., so the microbial index of starch exceeding the standard has always been a major problem for starch production enterprises, which limits the development, promotion and application of starch enterprises' products in food, medicine and other industries
[0011] From the public literature, we can know that the method of irradiation sterilization is generally used for medicinal starch, which can reduce the intrinsic viscosity of modified starch and change its properties. Products with strict application requirements for intrinsic viscosity are not suitable for use; Sterilization treatment is a commonly used treatment method, and methods such as acid method and sodium hypochlorite solution method can be used; Tianjin Dingfeng Starch Company uses CIP comprehensive control method for production control, but firstly requires the microorganisms of starch raw materials to meet the requirements, and the adaptability is not strong

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Microorganism control method such as embodiment 1 pipeline, equipment

[0046] Pipelines and equipment should be cleaned and disinfected before changing varieties, and pipelines and equipment should be cleaned and disinfected every five days during continuous production.

[0047] ① Clean the visible impurities such as the pipelines, storage tanks and equipment through which the slurry flows with clean water, and clean out the starch slurry in the slurry tubes, and then soak these pipelines with 0.4% sodium hypochlorite aqueous solution with a pH value of 10-11 for 20 Minutes or in a slow flow, rinse with plenty of water and set aside.

[0048] ②Clean up the wet powder on the centrifuge, replace the filter cloth, soak the rag with the newly prepared 100ppm chlorine dioxide solution, and then use the rag to scrub the inner wall of the centrifuge.

[0049] ③Manually clean up a large amount of powder remaining in the drying line, and turn on the hot air blower for 4 minute...

Embodiment 2

[0050] Microorganism control methods such as embodiment 2 pipelines, equipment

[0051] Pipelines and equipment should be cleaned and disinfected before changing varieties, and pipelines and equipment should be cleaned and disinfected every five days during continuous production.

[0052] ④ Clean the visible impurities such as the pipelines, storage tanks and equipment through which the slurry flows with clean water, and clean out the starch slurry in the slurry tubes, and then soak these pipelines with 0.3% hydrogen peroxide solution with a pH value of 3 to 4 20 minutes or in a slow flow, rinse off with plenty of water and set aside.

[0053] ⑤Clean up the wet powder on the centrifuge, replace the filter cloth, soak the rag with the newly prepared 200ppm chlorine dioxide solution, and then use the rag to scrub and disinfect the inner wall of the centrifuge.

[0054] ⑥ Manually clean up a large amount of powder remaining in the drying line, and turn on the hot air blower for ...

Embodiment 3

[0055] Embodiment 3 denatured slurry microbial control method

[0056] For corn starch slurry, the slurry depth is 1000mm, the slurry concentration is 18.5Be', the starch content is 10 tons, and the total number of bacteria in the starch slurry is 3 million / ml.

[0057] ① Add 300kg of raw salt to the cornstarch slurry, stir for 20 minutes, add aqueous sodium hydroxide solution to adjust the pH value of the slurry to 9-11, add certain chemical reaction reagents for chemical denaturation reaction, heat up to 45-50°C for 2 hours, and put The temperature of the starch slurry drops below 30° C., and the pH value of the slurry is neutralized to 6.0 to 6.5 with aqueous hydrochloric acid to end the denaturation reaction.

[0058] ②At room temperature of 25°C, add 100kg of water into the plastic mixing bucket, add 20kg of chlorine dioxide liquid (effective content 2%) into the bucket and stir evenly, then add 1kg of solid activator, stir to dissolve, immediately cover the lid, Set to ...

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Abstract

The invention discloses an overall treatment method of starch and starch derivatives, which is performed by carrying out sterilization and bacteriostatic treatment on critical points in a pipeline, a receiver tank, a washer, a separation plant, a drying plant and farinaceous size; specifically the method comprises the following steps: using acid-base sterilization method in combination with disinfectant and employing soaking or slug flow method to sterilize the pipeline, the receiver tank and the washer the farinaceous size flows through; adopting an ultraviolet sterilization lamp to carry out farinaceous size surface sterilization on the receiver tank and a head tank; adopting disinfectant to carry out sterilization on the internal surface of a centrifugal machine; adopting chemical modification self sterilization method and adding disinfectant to carry out sterilization and bacteriostatic treatment on the farinaceous size; adopting the method for cleaning residual powder in combination with air-heater high temperature sterilization for blowing clean the residual dust and then drying the powder. Through a series of overall control methods, the finished product of starch meets the requirements for starch microorganism applied to food and medicine, thus providing an effective microorganism control method for starch production enterprises and enhancing product competitiveness of such enterprises.

Description

technical field [0001] The invention relates to a new method for solving the problem of microbial excess in starch. In particular, the invention relates to a comprehensive treatment method for microorganisms in starch and starch derivatives. Background technique [0002] As food additives, starch and its derivatives can be widely used in various food additives, and are generally produced by wet process routes. However, since starch itself contains carbohydrates and proteins, it is a nutrient-rich substance that provides microorganisms with easy survival and reproduction. environment, such as water, protein, carbon source and suitable temperature, etc., so the microbial index of starch exceeding the standard has always been a major problem for starch production enterprises, which limits the development, promotion and application of starch enterprises' products in food, medicine and other industries . [0003] The metabolism of microorganisms is active, especially in the log...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B30/04A61L2/10A61L2/18
Inventor 冯琳潘瑞坚陈江枫梁著棋曾成伟陈明育玉琼广
Owner 广西农垦明阳生化有限公司
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