Preparation method for granular cold-water soluble starch

A granular and starch technology, applied in the field of preparation of granular cold water soluble starch (GCWS), can solve the problems of unapplied quality, a large amount of industrial wastewater, heat transfer affecting products, etc., and achieve good adsorption and embedding performance, cold water The effect of high solubility and large specific surface area

Inactive Publication Date: 2012-04-11
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the shortcomings of high temperature and high pressure, a large amount of industrial waste water, high energy consumption, long process, unsatisfactory heat transfer will affect product quality and cannot be applied to high amylopectin in the existing process of preparing granular cold water soluble starch, the present invention provides a method. A New Method for Preparation of Granular Cold Water Soluble Starch

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The planetary ball mill is used for dry grinding and preparation. Two grinding balls with diameters of Ф20 mm and Ф10 mm are selected. The ratio of the number of grinding balls is controlled as Ф20 mm:Ф10mm=1:2. The volume of the ball milling tank is 500mL. Starch (10% water content) and ceramic grinding balls are placed in a ceramic ball milling tank. The mass ratio of the grinding balls to dry starch is 6.6:1. Keep the filling rate of the ball milling tank (measured by the volume of dry starch) at 25% (v / v), grind 3.2h at the speed of 550r / min ball mill to obtain granular cold water soluble starch.

[0020] Scanning detection by electron microscope shows that the retention rate of starch granules in the product is 94%, and the solubility of the product in cold water at 20°C is 62%.

Embodiment 2

[0022] It is prepared by dry grinding by planetary ball mill. Three grinding balls with diameters of Ф20 mm, Ф10mm and Ф6mm are selected, and the ball number ratio of the grinding balls is controlled as Ф20 mm:Ф10mm:Ф6mm =1:2:4, inside the ball mill tank The volume is 500mL, and the dry waxy corn starch (11% water content) and ceramic grinding balls are placed in a ceramic ball milling tank. The mass ratio of the grinding balls to the dry starch is 10:1 to maintain the filling rate of the ball milling tank (with dry starch Volume measurement) is 18% (v / v), and it is ground for 7 hours at 200r / min ball mill speed to obtain granular cold water soluble starch.

[0023] Scanning detection by electron microscope showed that the retention rate of starch granules in the product was 95%, and the solubility of the product in cold water at 20°C was 67%.

Embodiment 3

[0025] It is prepared by dry grinding by planetary ball mill. Two kinds of grinding balls with diameters of Ф20 mm and Ф10mm are selected, and the ball number ratio of the grinding balls is controlled to be Ф20 mm:Ф10mm=1:2. The ball milling tank content is 500mL. Rice starch (12% water content) and ceramic grinding balls are placed in a ceramic ball milling tank, the mass ratio of grinding balls to dry starch is 12:1, and the filling rate of the ball milling tank (measured by the volume of dry starch) is 15% (v / v), grind for 2.5h at 500r / min ball mill speed to obtain granular cold water soluble starch.

[0026] Scanning detection by electron microscope showed that the retention rate of starch granules in the product was 96%, and the solubility of the product in cold water at 20°C was 69%.

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Abstract

The invention provides a preparation method for granular cold-water soluble starch so as to solve the defects of high temperature and high pressure, massive industrial sewage, high energy consumption and long process of the current technology for preparing granular cold-water soluble starch. Dry starch and ceramics mill balls are arranged in a ceramics mill ball tank; the ceramics mill balls with specific diameters are selected and the mass ratio of the ceramics mill balls to the starch is 3 to 1 - 15 to 1. Measured through the volume of the dry starch, the filler rate of the mill ball tank is 10-50 percent. The granular cold-water soluble starch can be obtained by milling the dry starch for 1.5-7h under a rotating speed of 200-550r/min of a ball mill. The preparation method is simple and easy, does not need high temperature and high pressure, and can prepare the granular cold-water soluble starch through a mechanical activation way of the ball mill under normal temperature, can not generate industrial sewage, has low energy consumption and short process, is simple and is easy to realize industrialized production.

Description

technical field [0001] The invention belongs to the field of deep processing of starch denaturation, and in particular relates to a preparation method of granular cold water soluble starch (GCWS). Background technique [0002] Starch is a renewable raw material that is cheap, readily available and widely used. With the development of industry, the defects of structure and performance of native starch greatly limit its application range, and cannot meet the requirements of new industrial technologies. More and more, starch products are required to have specific functions, such as cold water solubility, film-forming property, increasing Consistency, freeze-thaw stability, gel, thermal stability, shear resistance, acid and alkali resistance, etc. Starch molecules have many hydroxyl groups and are highly hydrophilic, but starch granules are insoluble in water because of the strong hydrogen bonds between the hydroxyl groups. Cold water soluble starch is a new type of modified s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B30/14
Inventor 马莺刘天一李琳孟爽何胜华
Owner HARBIN INST OF TECH
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