Method for detecting artificially synthesized pigments in carbonated beverages

A technology of artificial synthetic pigments and detection methods, which is applied in the field of detection of artificial synthetic pigments, can solve the problems of complex equipment and inapplicability to large-scale industrial production, and achieve the effect of simple detection method, high detection degree and obvious effect

Inactive Publication Date: 2014-04-23
GUANGXI UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

In the past, synthetic pigments were mostly detected by high-performance liquid chromatography

Method used

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Examples

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Embodiment 1

[0013] A method for detecting artificially synthesized pigments in carbonated beverages, comprising the following steps:

[0014] 1) Sample treatment: use two cups to repeatedly pour the sample 80-100 times to remove CO 2 , accurately draw 50ml of the sample into a 100ml beaker, heat to 70°C, and set aside;

[0015] 2) Adsorption and removal of impurities: Weigh 1g of polyamide powder, add a small amount of water to make a paste, then pour it into the pre-treated sample at 70°C, stir well to make the sample liquid pigment completely absorbed, and transfer all the sample liquid into Sabouraud -G3 funnel suction filtration, wash the precipitate with 300ml of distilled water at 70°C and pH=4 for several times until the pH of the washing liquid is the same as that of the original distilled water;

[0016] 3) Desorption: Wash the pigment three times with 15ml of ethanol ammonia solution, stir from time to time during the desorption process until the filtrate is colorless and colle...

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Abstract

The invention discloses a method for detecting artificially synthesized pigments in carbonated beverages. The method comprises the following steps: (1) performing sample treatment; (2) adsorbing and removing impurities; (3) desorbing; (4) concentrating; (5) performing qualitative paper chromatography; and (6) performing quantitative paper chromatography. The method the method for detecting artificially synthesized pigments in carbonated beverages provided by the invention has the beneficial effects that the detection mode is simple, the effect is obvious and the method can be suitable for multiple artificially synthesized pigments. Compared with a conventional chromatographic detection method, the method provided by the invention has higher detection degree.

Description

technical field [0001] The invention relates to a method for detecting artificially synthesized pigments in carbonated beverages. Background technique [0002] Synthetic pigments are artificially synthesized pigments, which have many advantages, such as bright color, strong tinting power, and various hues, but it has a major disadvantage, that is, toxicity (including toxicity, diarrhea, and carcinogenicity). These toxicity originate from arsenic, lead, copper, phenol, aniline, ether, chloride and sulfate in synthetic pigments, which can cause different degrees of harm to the human body. In the past, high-performance liquid chromatography of artificial synthetic pigments was mostly used in the detection of synthetic pigments, but the equipment is complicated and cannot be applied to large-scale industrial production. Contents of the invention [0003] The object of the present invention is to provide a detection method for detecting artificial pigments in carbonated bevera...

Claims

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Application Information

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IPC IPC(8): G01N30/90
Inventor 李克讷何后沙
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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