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Dry method for preparing dextrin by microwave

A technology of dextrin preparation and microwave method, which is applied in the field of microwave dry method preparation of dextrin, can solve the problems of long time, uneven starch hydrolysis, high reaction temperature, etc., and achieve the effect of short time, environmentally friendly preparation method and low reaction temperature

Inactive Publication Date: 2010-10-20
罗代洪 +2
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

The roasting method with acid has defects such as high reaction temperature, long time, uneven hydrolysis of starch, etc.

Method used

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  • Dry method for preparing dextrin by microwave

Examples

Experimental program
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Effect test

Embodiment 1

[0012] Add 100kg of starch into the acid adding machine, start the mixer, add 2kg of 8% dilute nitric acid by spraying, mix for 20 minutes until uniform, transfer the acid-added starch into the microwave continuous transmission box reactor, and control the transmission speed so that The starch is irradiated in the microwave field for about 10 minutes, and then cooled to obtain the finished product.

Embodiment 2

[0014] Add 100kg of starch into the acid adding machine, start the mixer, add 10kg of 10% dilute hydrochloric acid by spraying, mix for 20 minutes until uniform, transfer the acid-added starch into the microwave continuous transmission box reactor, and control the transmission speed so that The starch is irradiated in the microwave field for about 15 minutes, and the finished product is obtained after cooling.

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Abstract

The invention relates to a dry method for preparing dextrin by microwave. In the preparation method, starch and inorganic acid are used as raw materials; and by using special thermal effect and non-thermal effect of the microwave, the dextrin is prepared by hydrolyzing the starch with the acid in a microwave field. The preparation method comprises the following steps of: pouring the starch into an acid dosing machine, starting the acid dosing machine, spraying 1 to 30 percent acid in an amount which is 2 to 20 percent of the mass of the starch and uniformly mixing the starch and the acid; and putting the uniformly mixed starch which is added with the acid into a microwave reactor to perform microwave radiation for 2 to 20 minutes to obtain a finished product of the dextrin. Compared with the prior art, the dry method for preparing the dextrin by the microwave has the characteristics of simple and safe operation, low reaction temperature, short time, high efficiency, low energy consumption, no pollution, uniform starch hydrolysis, large-scale continuous production and the like, and is a simple, high-efficiency, energy-saving and environmental-friendly method for preparing the dextrin.

Description

technical field [0001] The invention relates to a method for preparing dextrin by a microwave dry method. Background technique [0002] Dextrin is prepared by hydrolysis of starch by physical, chemical, biochemical and other methods, and is the product of partial hydrolysis of starch. It is widely used in food, chemical industry, printing and dyeing and other fields. [0003] From the perspective of production technology, there are three methods for producing dextrin: (1) baking method, that is, putting starch into a reactor with a stirrer, stirring and heating to 180°C-220°C for baking; (2) adding Acid roasting method, heating the starch added with dilute inorganic acid to 165°C-220°C and roasting for 2 hours; (3) enzymatic method. The acid-adding roasting method has defects such as high reaction temperature, long time, and uneven hydrolysis of starch. Contents of the invention [0004] The purpose of the present invention is to provide a method for preparing dextrin b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B30/18
Inventor 罗代洪罗凯赵晓琴赵晓红
Owner 罗代洪
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