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Preparation method for granular cold-water soluble starch

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

Inactive Publication Date: 2014-08-13
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] It was prepared by dry grinding with a planetary ball mill. Two kinds of grinding balls with diameters of Ф20 mm and Ф10 mm were selected, and the ball number ratio of the grinding balls was controlled to be Ф20 mm:Ф10 mm=1:2, and the inner volume of the ball mill was 500 mL. Starch (water content 10%) and ceramic grinding balls are placed in a ceramic ball milling tank, the mass ratio of grinding balls to dry starch is 6.6:1, and the filling rate of the ball milling tank (measured by dry starch volume) is kept at 25% (v / v) Grinding for 3.2 hours at a ball mill speed of 550r / min to obtain granular cold water soluble starch.

[0020] The starch granule retention rate in the product is 94% through scanning electron microscope detection, and the solubility of the product in cold water at a temperature of 20°C is 62%.

Embodiment 2

[0022] It is prepared by dry grinding with a planetary ball mill. Three kinds of grinding balls with diameters of Ф20 mm, Ф10 mm and Ф6 mm are selected, and the ratio of the number of grinding balls is controlled as Ф20 mm: Ф10 mm: Ф6 mm = 1:2:4. The volume is 500mL, dry waxy cornstarch (water content 11%) and ceramic grinding balls are placed in a ceramic ball milling jar, the mass ratio of grinding balls to dry starch is 10:1, and the filling ratio of the ball milling jar (with dry starch Volume measurement) is 18% (v / v), and it is ground for 7 hours at the speed of 200r / min ball mill to obtain granular cold water soluble starch.

[0023] The starch granule retention rate in the product is 95% through scanning electron microscope detection, and the solubility of the product in cold water at a temperature of 20°C is 67%.

Embodiment 3

[0025] It is prepared by dry grinding with a planetary ball mill. Two kinds of grinding balls with diameters of Ф20 mm and Ф10 mm are selected, and the ratio of the number of grinding balls is controlled to be Ф20 mm:Ф10 mm=1:2. The internal volume of the ball mill tank is 500 mL. Rice starch (water content 12%) 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 dry starch volume) is 15% (v / v), and grind for 2.5 hours at a ball mill speed of 500r / min to obtain granular cold-water-soluble starch.

[0026] The retention rate of starch granules in the product is 96% through scanning electron microscope detection, and the solubility of the product in cold water at a temperature of 20°C is 69%.

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Abstract

In order to solve the shortcomings of high temperature and high pressure, a large amount of industrial wastewater, large energy consumption and long process in the existing process of preparing granular cold water soluble starch, the present invention provides a preparation method of granular cold water soluble starch, which is to grind dry starch and ceramics The balls are placed in a ceramic ball milling tank, and ceramic grinding balls with a specific diameter are selected. The mass ratio of ceramic grinding balls to starch is 3:1-15:1; measured by dry starch volume, the filling rate of the ball milling tank is 10-50%; Grinding for 1.5-7 hours at a ball mill rotating speed of 200-550 r / min to obtain granular cold-water-soluble starch. The method of the invention is simple and easy, and the granular cold-water soluble starch can be prepared only under normal temperature conditions by using a ball mill for mechanical activation without the need of high temperature and high pressure. No industrial waste water will be generated, the energy consumption is low, the process is short, the preparation method is simple, and the industrialized production can be easily realized.

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 Patents(China)
IPC IPC(8): C08B30/14
Inventor 李琳刘天一马莺孟爽何胜华
Owner HARBIN INST OF TECH
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