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A method for the determination of the concentration of Sudan red i and ii in red wine by microextraction high performance liquid chromatography of corn bract film

A technology of high performance liquid chromatography and corn husk, which is applied in the field of quantitative analysis of Sudan Red I and Sudan Red II, can solve the problems of time-consuming and expensive, cumbersome process and high enrichment factor, and achieves improved use value, good quality The effect of development prospects

Inactive Publication Date: 2019-07-12
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the cumbersome, time-consuming and expensive process of solid-phase extraction, liquid-phase microextraction has low consumption, simple operation, less solvent consumption, high enrichment factor but low repeatability

Method used

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  • A method for the determination of the concentration of Sudan red i and ii in red wine by microextraction high performance liquid chromatography of corn bract film
  • A method for the determination of the concentration of Sudan red i and ii in red wine by microextraction high performance liquid chromatography of corn bract film
  • A method for the determination of the concentration of Sudan red i and ii in red wine by microextraction high performance liquid chromatography of corn bract film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0021] (1) Preparation of corn bract film microextraction membrane

[0022] The dried corn bracts were cut into 1cm×4cm films, and then the cut corn bracts were ultrasonically cleaned for 40 minutes and then dried at room temperature to obtain a corn bract film micro-extraction membrane for use;

[0023] (2) Drawing of marked curves determined by high performance liquid chromatography of corn bract thin film microextraction

[0024] Add 1.0g NaCl, 10.00mL of a mixed solution of ethanol and water with a volume ratio of 1:20 and 200μL of different mass concentration gradients (concentrations are 20.0μg / L, 50.0μg / L, 100.0μg / L, 200.0μg / L and 500.0μg / L) Sudan Red I and Sudan Red II standard solutions, and then the corn bract thin film microextraction membrane was added to the Erlenmeyer flask and sealed, then shaken at 25°C at a speed of 160rpm Adsorbed for 3 hours, took out the microextraction membrane of corn bract leaf film and dried it at room temperature, eluted it with 1.50...

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Abstract

The invention discloses a method for measuring the concentration of Sudan Red I and II in red wine by micro-extraction of corn bract thin film high-performance liquid chromatography, and belongs to the technical field of quantitative analysis methods of Sudan Red I and Sudan Red II. The key points of the technical scheme of the present invention include the preparation of the micro-extraction film of corn bract film, the drawing of the standard curve for the determination of high-performance liquid chromatography by the micro-extraction of corn bract film, and the determination of the content of Sudan Red I and Sudan Red II in red wine. The corn bract film microextraction high performance liquid chromatography method of the present invention is simple in operation, low in cost, easy to separate, strong in anti-interference ability and good in repeatability, and has good market application prospect.

Description

technical field [0001] The invention belongs to the technical field of quantitative analysis methods of Sudan Red I and Sudan Red II, and in particular relates to a method for measuring the concentrations of Sudan Red I and II in red wine by micro-extraction high-performance liquid chromatography of corn bract film. Background technique [0002] Sudan dyes are often illegally used in the food industry to mimic the color of natural foods and thereby increase their sales. Now Sudan red dye and its metabolites have been proved to be carcinogenic, teratogenic, and mutagenic to humans, and most countries have banned the use of Sudan red dye as a food additive. Therefore, it is necessary to establish a reliable, rapid, effective and highly sensitive method for the determination of Sudan Red in food. [0003] The detection and analysis of Sudan Red mainly adopts electrochemical detection, high performance liquid chromatography, thin layer chromatography, electrophoresis, nuclear m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/02G01N30/06
CPCG01N30/02G01N30/06
Inventor 叶存玲王慎王远飞王治科范顺利周静静
Owner HENAN NORMAL UNIV
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