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Quick detecting method for sudan red in food

A detection method, Sudan red technology, applied in the field of rapid detection of Sudan red in food, can solve the problems of expensive equipment, complicated operation, difficult to popularize, etc., and achieve the effect of convenient operation, simple equipment and high extraction rate

Inactive Publication Date: 2014-10-15
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to: in view of the above-mentioned existing problems, provide a kind of rapid detection method of Sudan red in food, solve the problems such as expensive instrument, complex operation, not easy to popularize, high extraction rate, high purification purity, fast and reliable, easy to operate , for the purpose of cost saving

Method used

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  • Quick detecting method for sudan red in food
  • Quick detecting method for sudan red in food
  • Quick detecting method for sudan red in food

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Weigh 10 g of red pepper powder into a centrifuge tube, add 30 mL of water for dilution, add 10 mL of a mixed solvent of n-hexane and acetone with a volume ratio of 5:3, shake for 1 min, extract by ultrasonic for 15 min, centrifuge at 3500 r / min for 1 min, filter, The residue was extracted twice with 10 mL and 5 mL of a mixed solvent of n-hexane and acetone with a volume ratio of 5:3, respectively, and the extracts were combined; the extract was placed in a distillation flask, and the distillation flask was placed in a 40°C water bath for rotary evaporation, Or add anhydrous sodium sulfate to the bottle for dehydration, filter and evaporate to dryness naturally; add 1 mL of acetone to dissolve the obtained in the previous step, pass through a polyamide thin-layer plate, and use chloroform:acetone:acetic acid=6:1:1 as a developing agent, The obtained crystals were dried and placed in a sampling bottle; acetonitrile was added to the upper sampling bottle to make the volume...

Embodiment 2

[0023] Weigh 5g of ketchup into a centrifuge tube, add 20mL of water for dilution, add 10mL of a mixed solvent of n-hexane and acetone with a volume ratio of 5:3, shake for 1min, extract by ultrasonic for 15min, centrifuge at 5000r / min for 1min, filter, and remove the residue. Extract twice with 10mL and 5mL of a mixed solvent of n-hexane and acetone with a volume ratio of 5:3 respectively, and combine the extracts; place the extracts in a distillation flask, and place the distillation flask in a 40°C water bath for rotary evaporation, or Add anhydrous sodium sulfate to the bottle for dehydration, filter and evaporate to dryness naturally; add 1 mL of acetone to dissolve the result obtained in the previous step, pass through a polyamide thin-layer plate, and use chloroform:acetone:acetic acid=6:1:1 as a developing agent, the obtained The crystals were dried and placed in a sampling bottle; acetonitrile was added to the upper sampling bottle to make the volume to 5 mL, shaken fo...

Embodiment 3

[0025] Weigh 20g of chili oil in a centrifuge tube, add 25mL of water for dilution, add 30mL of a mixed solvent of n-hexane and acetone with a volume ratio of 5:3, shake for 1min, extract by ultrasonic for 15min, centrifuge at 5000r / min for 1min, filter, and remove the residue. Extract twice with 10mL and 5mL of a mixed solvent of n-hexane and acetone with a volume ratio of 5:3 respectively, and combine the extracts; place the extracts in a distillation flask, and place the distillation flask in a 40°C water bath for rotary evaporation, or Add anhydrous sodium sulfate to the bottle for dehydration, filter and evaporate to dryness naturally; add 1 mL of acetone to dissolve the result obtained in the previous step, pass through a polyamide thin-layer plate, and use chloroform:acetone:acetic acid=6:1:1 as a developing agent, the obtained The crystals were dried and placed in a sampling bottle; acetonitrile was added to the upper sampling bottle to make the volume to 5 mL, shaken f...

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Abstract

The invention discloses a quick detecting method for sudan red in food, and relates to the field of food safety. The detecting method comprises the four steps of sample pretreatment, concentration and evaporating to dryness, film chromatography, and HPLC determination. The quick detecting method solves the problems that detecting instrument is expensive, complex to operate and not easy to popularize, has the characteristics of high extraction rate, high purifying purity, high recovery ratio and the like, and can achieve the purpose of being quick and reliable, simple and convenient to operate, and cost-saving.

Description

technical field [0001] The invention relates to the field of food safety, in particular to a rapid detection method for Sudan Red in food. Background technique [0002] In recent years, food safety has become a public health concern, and the use of toxic and harmful substances such as Sudan red dyes in food production has aggravated the food safety situation of people around the world. [0003] Sudan red is a kind of synthetic oil-soluble industrial dyes, belonging to azo chemical dyes, divided into I, II, III and IV, the color is orange-red or reddish brown, its chemical composition contains It is a compound called naphthalene, which has an azo structure and has obvious toxic effects on the liver and kidney organs of the human body. Sudan red is a chemical dye, mainly used in petroleum, motor oil and some other industrial solvents, the purpose is to make it color, and also used for shoes, floors and so on. It has been reported that Sudan Red I can cause tumors in the live...

Claims

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Application Information

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IPC IPC(8): G01N30/02
Inventor 李海燕
Owner GUANGXI UNIV
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