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Food nitrite and nitrate quantitative detection method

A quantitative detection method and nitrite technology, which is applied in the preparation of test samples, color/spectral characteristic measurement, special data processing applications, etc., can solve the problems of limited application range of detection methods, large crossover of methods, and high cost of consumables

Inactive Publication Date: 2007-10-24
INNER MONGOLIA YILI INDUSTRIAL GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, the applicability of each method is different. Chromatography, spectrophotometry, and polarography need to be equipped with expensive detection equipment. The kit method is a rapid method with high consumable costs. The scope of application of different detection methods is limited, and the crossover between methods is too large. , it is necessary to find an economical and high-accuracy method

Method used

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  • Food nitrite and nitrate quantitative detection method
  • Food nitrite and nitrate quantitative detection method
  • Food nitrite and nitrate quantitative detection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] According to the difference whether there is pigment interference in the product, the method according to the present invention is respectively processed to obtain the content of nitrite and nitrate contained in the sample itself, and the detection and comparison results are as follows

[0092]

[0093] From the results in the above table, we know that for the food without pigment in the product, after decolorization treatment, the difference in the result is very small, and for the food rich in pigment in the product, a decolorizer is artificially added in the sample processing to eliminate the pigment. The effect of the results, the results are significantly different, after the decolorization treatment, the results are low.

experiment example 2

[0095]

[0096]By using this method for parallel detection, the repeatable detection results of the same sample conform to the allowable error of the method, that is, the result of nitrite is not more than 1 mg / kg, and the result of nitrate is less than 30 mg / kg when the nitrate content is less than 30 mg / kg. Not more than 3mg / kg. The method has good repeatability.

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Abstract

The invention relates to a method for checking nitrite and nitrate of different foods, which can save time, save cost, improve working efficiency and check result, with high accuracy and quantitative property.

Description

Technical field: [0001] The invention relates to a quantitative detection method for nitrite and nitrate in food, belonging to a food testing method. Background technique: [0002] Nitrite and nitrate are a kind of hair coloring agent in food. During food processing and production, nitrate in food is reduced to nitrite by bacteria in the intestine. When the intake in the human body is too much, it will cause The hemoglobin of divalent iron in the blood turns into hemoglobin of ferric iron, which makes the human body lose its oxygen-carrying function and suffocate. At the same time, nitrite can also form nitrosamines with amine compounds, which has a strong carcinogenic effect. Nitrite and nitrate are listed as mandatory inspection items in food testing. Secondly, in some areas of our country, due to water quality reasons, the content of nitrite and nitrate in the water is high, and the health of local people is affected. Therefore, the inspection of nitrite and nitrate in f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31G01N1/38G01N1/34G06F19/00
Inventor 张秀梅李翠枝
Owner INNER MONGOLIA YILI INDUSTRIAL GROUP CO LTD
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