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Starch quality evaluation method

A starch and quality technology, applied in the direction of removing certain components, weighing, measuring devices, instruments, etc., can solve the problem that the quality of starch cannot be truly judged, and achieve the effect of improving the quality of starch products

Inactive Publication Date: 2019-12-27
ZHEJIANG HUAKANG PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for evaluating the quality of starch to solve the problem that the national standard detection method of starch cannot truly judge the quality of starch

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A kind of first preferred embodiment of the method for evaluating starch quality of the present invention, taking the evaluation of cornstarch as an example, comprises the steps:

[0019] 11. Dry the filter paper (with a pore size of 4 µm) in an oven at 105°C to constant weight, take it out, place it in a desiccator, dry it for 30 minutes, and weigh it, and record the initial mass m1 (g) of the filter paper.

[0020] 12. Weigh about 1000g of corn starch and place it in a 5000ml beaker, record the starch mass M1 (g).

[0021] 13. Add 2000ml of water to the beaker and stir with a stirrer for 15 minutes to completely dissolve the starch in the water to obtain a starch suspension.

[0022] 14. Use a sampling sieve with a pore size of 45 μm to filter the starch suspension obtained in step 13 with water. While filtering, turn the sampling sieve, and then clean the edge of the sampling sieve with water until the starch emulsion cannot be filtered.

[0023] 15. Wash the residu...

Embodiment 2

[0029] The second preferred embodiment of a method for evaluating starch quality of the present invention, taking the evaluation of cornstarch as an example, comprises the steps:

[0030] 21. Dry the sand-core glass crucible in an oven at 105°C to constant weight, take it out, place it in a desiccator, dry it for 30 minutes, then weigh it, and record the initial mass m3 (g) of the sand-core glass crucible.

[0031] 22. Weigh about 1000g of corn starch and place it in a 5000ml beaker, record the starch mass M2 (g).

[0032] 23. Add 2000ml of water to the beaker and stir with a stirrer for 15 minutes to completely dissolve the starch in the water to obtain a starch suspension.

[0033] 24. Use a sampling sieve with a pore size of 45 μm to filter the starch suspension obtained in step 23 with water. While filtering, turn the sampling sieve, and then clean the edge of the sampling sieve with water until the starch emulsion cannot be filtered.

[0034] 25. Wash the residue on the ...

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PUM

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Abstract

The invention relates to a starch quality evaluation method. A certain mass of starch to be evaluated is completely dissolved by water to obtain starch turbid liquid; the starch turbid liquid is filtered by a sample separation sieve; then, obtained oversize residues are transferred into a container; next, the oversize residues are dried to obtain the mass of the dried residues; the mass of the residues is compared with the mass of the starch to be evaluated; the water washing particle diameter of the starch is calculated; then, the starch with the water washing particle diameter value being smaller than 0.5 is judged into the starch with the qualified quality; and the starch with the water washing particle diameter value not being smaller than 0.5 is judged to into the starch with the non-qualified quality. The starch quality evaluation method solves the problem that the quality of corn starch cannot be actually judged in the prior art. The quality of the starch to be evaluated can beeffectively judged, so that the quality level of different raw material starch can be controlled; and the starch product quality improvement by starch production manufacturers is facilitated; and thestable production of a sugar making process using the starch as raw materials is realized.

Description

technical field [0001] The invention belongs to the technical field of starch quality evaluation, in particular to a method for evaluating starch quality. Background technique [0002] When starch manufacturers produce corn starch, due to the difference in raw materials and related processes, the quality of starch will vary greatly. Corn starch is easy to age, and the greater the content of aged starch in starch, the worse the quality of starch. Aging starch will make the production of sugar refining process difficult, resulting in a substantial increase in the production cost of the sugar refining process and a decline in product quality. At present, national standard detection methods such as GB / T 8885-2017 "Edible Corn Starch" cannot effectively determine the content of aged starch in starch. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for evaluating the quality of starch to solve the problem th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/04G01N15/02
CPCG01N5/04G01N15/0272
Inventor 程雨晴韩新峰陈升荣韩元龙姚智慧
Owner ZHEJIANG HUAKANG PHARMA