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Production for modified chlorinated starch

A production method and technology for oxidizing starch, which are applied in the production field of modified oxidized starch, can solve the problems of uneven starch oxidation, low economic benefit, destruction of starch structure, etc., so as to ensure soaking effect and acidity, and improve enterprise efficiency and social economy. Effective, highly reactive effects

Inactive Publication Date: 2005-05-11
GUANGZHOU TAISHENG BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. When these bleaching agents bleach starch, they will produce side effects of destroying starch structure, resulting in large starch loss, low starch extraction rate, high cost and low economic benefit;
[0005] 2. The oxidation of starch is not uniform. When using chlorine preparations such as liquid chlorine and sodium hypochlorite for bleaching, it is easy to produce chloroform carcinogens, which will cause great harm to the human body.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] a. The corn is crushed, and the fineness of the granules shall not exceed 5 to 8 large granules with a diameter of more than 2mm per milliliter of starch emulsion;

[0032] B, soaking, the temperature is 25 ℃, the time is 50 hours, the pH value is 3.0, and adding chlorine dioxide is 0.01% of corn weight;

[0033] c. Rough classification;

[0034] d, finely divided to obtain bleached starch, adding chlorine dioxide is 0.1% of the corn weight;

[0035] e. Adjust the starch concentration to 30%, and the pH value to 1.0;

[0036] f, adding 0.1% chlorine dioxide of starch weight to oxidize;

[0037] g, neutralization to a pH value of 6.0;

[0038] h. Washing;

[0039] i. Dehydration;

[0040] j. dry;

[0041] k. Packaging.

Embodiment 2

[0043] a. Adjust starch concentration to 40%, pH value to 1.5;

[0044] B, add 0.3% chlorine dioxide of starch weight to oxidize;

[0045] c, neutralized to a pH value of 7.0;

[0046] d. Washing;

[0047] e. Dehydration;

[0048] f. dry;

[0049] g. Packaging.

Embodiment 3

[0051] a. Wheat is crushed, and the fineness of the particles is based on the fact that the large particles with a diameter of more than 2 mm per milliliter of starch emulsion do not exceed 5 to 8 particles;

[0052] B, soaking, the temperature is 45 ℃, the time is 60 hours, the pH value is 6.0, adding chlorine dioxide is 0.08% of wheat weight;

[0053] c. Rough classification;

[0054] d, finely divided, and bleached starch is obtained, adding chlorine dioxide is 0.2% of wheat weight;

[0055] e, adjust the starch concentration to 42%, and the pH value to 2.0;

[0056] f, adding 0.4% chlorine dioxide of starch weight to oxidize;

[0057] g, neutralization to a pH value of 8.0;

[0058] h. Washing;

[0059] i. Dehydration;

[0060] j. dry;

[0061] k. Packaging.

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PUM

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Abstract

A method of producing modified oxidized starch by: using chlorine dioxide as bleaching and oxidizing agent, which can quickly oxidize non-starch components to beach and convert hydroxy in glucose monomer into carboxy to oxidize. Because chlorine dioxide has wide spectrum and is effective, it reduces dosage and pollution, qualifies products, shortens reaction time, and has more profits.

Description

technical field [0001] The invention relates to a production method of starch, in particular to a production method of modified oxidized starch. Background technique [0002] The traditional method of producing starch generally consists of the following process steps: [0003] (1) crushing of starch raw materials; (2) soaking; (3) coarse separation; (4) fine separation; (5) dehydration; (6) drying; (7) packaging, wherein the raw materials used can be corn, wheat, tapioca starch etc. The oxidation of the oxidase contained in the starch raw material in the air will oxidize some substances that make up the cells, resulting in the darkening of the color of the starch, thus affecting the appearance of the product. Therefore, in the process of producing starch, it should generally be added Bleaching agent bleaches starch. Commonly used bleaching agents include sodium sulfite, potassium permanganate and sodium hypochlorite (floating water), etc. There are th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B31/18
Inventor 曾宪洲邓辉强吴锦洪
Owner GUANGZHOU TAISHENG BIOTECH
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