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Method for rapidly analyzing quality of commercial zein products

A product quality and rapid analysis technology, which is applied in chemical analysis by titration, material analysis by observing the influence of chemical indicators, and analysis by making materials undergo chemical reactions. It can solve the analysis of protein denaturation degree, protein Denaturation, unable to meet the problems of corn protein color, etc., to achieve the effect of simple operation and low instrument price

Inactive Publication Date: 2015-06-03
JIANGSU UNIV
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Problems solved by technology

However, there are two deficiencies in the pharmacopoeia method: one is that the evaluation indicators are not scientific and complete enough, corn gluten products produced by different processes contain more or less pigments, and the Chinese Pharmacopoeia lacks the analysis of pigment content in corn gluten products
In addition, the analysis of protein in the Pharmacopoeia only determines the content of protein by simple Kjeldahl method, without analyzing the degree of denaturation of protein, which cannot truly reflect the quality of corn protein; second, it is difficult to meet the higher requirements for product quality The quality indicators proposed by customers, especially the requirements of customers who have special needs for the color and protein quality of corn protein
However, due to the high-temperature concentration treatment and drying process involved in the production process of corn protein, improper operation can easily cause protein denaturation
[0003] In addition, in the past, precision instruments were used to analyze the moisture content, heavy metal content, and pigment content of corn protein. It is difficult for small and medium-sized enterprises to configure a complete set of precision instruments to analyze the quality of corn protein. At the same time, in the process of producing corn protein, Proteins will be denatured to varying degrees, and corn gluten products with a small degree of denaturation will not affect their actual use effect, so they can also be judged as qualified products. So far, how to quickly determine the degree of denaturation of corn gluten products and whether the product is qualified, There are no quantitative indicators in the industry

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  • Method for rapidly analyzing quality of commercial zein products
  • Method for rapidly analyzing quality of commercial zein products
  • Method for rapidly analyzing quality of commercial zein products

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with specific examples, but the protection scope of the present invention is not limited thereto.

[0026] A rapid analysis method for the quality of corn gluten products:

[0027] Moisture content analysis: using oven drying method. First, dry the cleaned weighing dish in an oven at 100°C ± 5°C for 1-2 hours, then place it in a desiccator to cool, weigh the mass (accurate to 0.1 mg), and then dry it in an oven for 30 minutes to Constant weight, its mass is recorded as m 0 ;

[0028] Weigh 3g to 5g each of the white corn gluten and yellow corn gluten samples, and accurately record the mass m 1 (accurate to 0.1mg), put the sample into a pre-dried weighing dish (mass is m 0 ); Then, put the open-covered weighing dish with the sample in the oven, start timing when the oven reaches 100°C ± 5°C, and keep it for 120min ± 5min; quickly take out the weighing dish, cover it, and place it in a desiccator Co...

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Abstract

The invention provides a method for rapidly analyzing the quality of commercial zein products, belonging to the field of a product quality analysis method. A more comprehensive method for reflecting the quality of the products is established by analyzing the water content, the protein content, the crude fat content, the ash content, the pigment content, the protein denaturation and the like of the zein; the method has higher applicable value for guiding the quality control of a zein production enterprise and provides reference for the relevant theoretical research of the zein.

Description

technical field [0001] The invention belongs to the field of product quality analysis methods, in particular to a rapid analysis method for the quality of commercial corn gluten products. Background technique [0002] Because of its good hydrophobicity and moldability, corn protein products have broad application prospects in the fields of food, medicine and cosmetics. At present, the quality evaluation of corn protein production and application enterprises in China is mainly based on the Chinese Pharmacopoeia, mainly based on product properties, protein content, crude fat content, moisture content, ash content, heavy metal content and microbial limit as evaluation indicators. However, there are two deficiencies in the pharmacopoeia method: one is that the evaluation indicators are not scientific and complete enough, and the corn protein products produced by different processes contain more or less pigments, while the Chinese Pharmacopoeia lacks the analysis of the pigment c...

Claims

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Application Information

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IPC IPC(8): G01N5/04G01N21/31G01N21/78G01N21/82G01N31/16
Inventor 徐斌韩及华吴其飞徐春芳董英姜松薛丁萍
Owner JIANGSU UNIV
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