A kind of preparation method and application of basic yellow o standard substance

Abstract

The invention discloses a preparation method of an alkaline bright-yellow o standard substance. The preparation method includes: taking an ethyl alcohol-aqueous solution 2-3:1 in volume ratio as a solvent to dissolve a raw material of alkaline bright-yellow o at the temperature ranging from 40DEG C to 60DEG C, and gradually adding the ethyl alcohol-aqueous solution 1:1 in volume ratio with constant stirring; continuously keeping the temperature of around 55-65DEG C and cooling a filtrate to indoor temperature after hot filtration; placing the filtrate under the condition of 4DEG C for recrystallization, drying a crystallized crystal under the condition of 60DEG C to obtain the alkaline bright-yellow O-standard substance via grinding sieving, evenly mixing and drying. A standard substance system is developed by the aid of the prepared standard substance, domestic blank is filled up, a value transfer system in measuring process is established, and important technical support is provided for food safety inspection and supervision and management; the uncertainty of the prepared alkaline bright-yellow o is 1%; the standard substance can be used for detecting the alkaline bright-yellow o in systems of food or cosmetics or medicine and the like, and accuracy and comparability of detection results are guaranteed.

Description

technical field [0001] The invention relates to a preparation method and application of basic yellow O standard substance. Background technique [0002] People are good at using pigments to improve the sensory quality of food. Bright colors not only give people visual pleasure, but also increase appetite. However, some non-edible pigments have begun to flow into food because of their low price, strong coloring power, and good stability. Production line, in recent years, there have been constant turmoil of food safety issues, frequent occurrence of chemical additives exceeding the standard or quality problems, resulting in heavy casualties and property losses, endangering people's physical and mental health, making food safety issues increasingly become a hot spot of concern to the whole society Therefore, preventing food contamination and controlling food quality are important measures to prevent diseases and protect people's health. [0003] For the detection of the conten...

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Problems solved by technology

[0002] People are good at using pigments to improve the sensory quality of food. Bright colors not only give people visual pleasure, but also increase appetite. However, some non-edible pigments have begun to flow into food because of their low price, strong coloring power, and good stability. Production line, in recent years, there have been constant turmoil of food safety issues, frequent occurrence of chemical additives exceeding the standard or quality problems, resulting in heavy casualties and property losses, endangering people's physical and mental health, making food safety issues increasingly become a hot spot of concern to the whole society Therefore, preventing food contamination and controlling food quality are important measures to prevent diseases and protect people's health

[0003] For the detection of the content of a certain substance in a certain sample, a standard substance is often required as a control. At present, my country has also developed standard substances for the detection of food pigments (such as sunset yellow, amaranth, tartrazine, carmine, and allura red). , however, the standard substance development of basic bright yellow O prohibited colorant is still in a blank stage

Most of the domestic food testing industry uses relevant foreign standard products. These standard products are not only expensive, but also have a long procurement cycle, and most of them are not traceable, which makes it impossible to effectively verify the testing methods and arbitrate the test results.

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