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Method for determining concentration of Sudan red I and Sudan red II in red wine by corn husk thin film micro-extraction high performance liquid chromatography

A high-performance liquid chromatography and corn husk technology, which is applied in the field of quantitative analysis of Sudan Red I and Sudan Red II, can solve the problems of cumbersome process, time-consuming, expensive price, and low repeatability, so as to achieve good development prospects and improve Use value effect

Inactive Publication Date: 2017-09-26
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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  • Method for determining concentration of Sudan red I and Sudan red II in red wine by corn husk thin film micro-extraction high performance liquid chromatography
  • Method for determining concentration of Sudan red I and Sudan red II in red wine by corn husk thin film micro-extraction high performance liquid chromatography
  • Method for determining concentration of Sudan red I and Sudan red II in red wine by corn husk thin film micro-extraction high performance liquid chromatography

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 determining the concentration of Sudan red I and Sudan red II in red wine by a corn husk thin film micro-extraction high performance liquid chromatography and belongs to the technical field of quantitative analysis methods of the Sudan red I and the Sudan red II. The method disclosed by the invention is characterized by comprising preparation of a corn husk thin film micro-extraction film, drawing a corn husk thin film micro-extraction high performance liquid chromatography determined standard curve, determining the contents of the Sudan red I and the Sudan red II in the red wine and the like. According to the method disclosed by the invention, the corn husk thin film micro-extraction high performance liquid chromatography has the advantages of simplicity in operation, low cost, easiness for separation, strong anti-interference capability and good repeatability and has a relatively wide 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 Applications(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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