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Method for simultaneous determination of a plurality of synthetic pigments in hot pot flavorings

A technology for synthesizing pigments and hot pot bottom materials, which is applied in the field of chemical analysis and detection, can solve the problems of incomplete extraction, affecting the accuracy of determination, and difficulty in extraction, and achieve the effect of simple detection steps, high accuracy and precision

Inactive Publication Date: 2012-08-15
重庆海关技术中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the complex composition of hot pot bottom material and serious matrix interference, it is difficult to extract pigments by conventional methods, and the extraction is incomplete, which affects the accuracy of the determination. Therefore, it is necessary to establish an efficient and accurate method for the determination of synthetic pigments in hot pot bottom materials.

Method used

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  • Method for simultaneous determination of a plurality of synthetic pigments in hot pot flavorings
  • Method for simultaneous determination of a plurality of synthetic pigments in hot pot flavorings
  • Method for simultaneous determination of a plurality of synthetic pigments in hot pot flavorings

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Embodiment Construction

[0049] The specific implementation of the present invention will be further described below in conjunction with the examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0050] What this embodiment adopts is the spicy hot pot bottom material produced by Chongqing Little Swan Group, and the specification is 300g / bag. Methanol, ethyl acetate and cyclohexane were of chromatographically pure grade.

[0051] The specific measurement process is as follows:

[0052] 1) extract

[0053] Accurately weigh 5.00 g of sample (accurate to 0.01 g) into a 50 mL centrifuge tube, add 20 mL of methanol-acetone solution (1+1, V / V ), placed in a water bath at 60 ℃ for 10 min, let the oil melt, vortexed for 2 min, centrifuged at 5000 rpm for 5 min, and transferred the supernatant to a 150 mL rotary evaporator; then 20 mL of methanol-acetone solution (1 +1, V / V ) Repeat the above operation once; add 1...

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Abstract

The invention discloses a method for simultaneous determination of a plurality of synthetic pigments in hot pot flavorings. The method comprises extraction, concentration, purification and detection of new red, amaranth, carmine, allura red, erythrosine, sunset yellow, acid red G, acid scarlet GR, Rhodamine B, Para Red, sudan I, sudan II, sudan III, sudan IV, sudan orange G, sudan red 7B and a plurality of other synthetic pigments. The method for simultaneous determination of a plurality of synthetic pigments in hot pot flavorings provided by the invention has the advantages of simple steps and high accuracy and precision.

Description

technical field [0001] The invention belongs to the field of chemical analysis and detection, and in particular relates to a simultaneous determination method for multiple synthetic pigments in hot pot bottom material. Background technique [0002] The hot pot base is a solid compound seasoning made by mixing dozens of materials such as butter, chili, pepper, onion, ginger, garlic and spices. The bright red color is a major feature of hot pot. The main coloring substances come from natural pigments such as capsanthin in peppers. However, some unscrupulous merchants add various synthetic pigments in the production process in order to reduce costs and improve appearance. Synthetic pigments are usually made from benzene and its homologues through a series of organic reactions such as sulfonation, nitration, halogenation, and azolation. Toxicological studies have found that some synthetic pigments are chronically toxic or carcinogenic, and all countries strictly control the sco...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/88
Inventor 郗存显唐柏彬李贤良王国民张雷李应国郑小玲张进忠
Owner 重庆海关技术中心
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