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Method for concurrently determining vitamin A content and vitamin E content in health product

A technology for vitamins and health products, applied in the field of simultaneous determination of vitamin A and E content in health products, can solve the problems of no simultaneous rapid determination and long detection cycle, and achieve good accuracy, short detection cycle and good selectivity

Inactive Publication Date: 2015-07-08
天津优标技术检测服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the detection of vitamin A and E content in health care products is mainly carried out independently, and the detection cycle is long; there is no method for rapid determination at the same time

Method used

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  • Method for concurrently determining vitamin A content and vitamin E content in health product
  • Method for concurrently determining vitamin A content and vitamin E content in health product

Examples

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Embodiment 1

[0017] A method for simultaneously measuring vitamin A and E content in health products, comprising the steps of:

[0018] (1) Saponification: Weigh an appropriate amount of the sample to be tested (Tiens Brand Cinuo solid beverage is the sample to be tested), accurate to 0.0001g, and add 30mL of absolute ethanol to the conical flask to stir until the particles are evenly dispersed; add 5mL of concentration As an aqueous solution of 100g / L ascorbic acid, add 2.00mL of benzo[e]pyrene with a concentration of 10μg / mL in absolute ethanol as an internal standard solution, and mix well; add 10mL of a 50% potassium hydroxide aqueous solution, mix Evenly, reflux in a boiling water bath for 30 minutes to obtain a saponified solution, which is cooled to room temperature in an ice-water bath;

[0019] (2) Extraction: transfer the saponification liquid into the separating funnel, wash the triangular flask with 50mL water three times, and put the washing liquid into the separating funnel; ...

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Abstract

The present invention discloses a method for concurrently determining the vitamin A content and the vitamin E content in a health product. The method comprises: (1) saponifying: weighing a sample to be detected, adding dehydrated alcohol, adding an aqueous solution of ascorbic acid, adding a dehydrated alcohol solution of benzo[e]pyrene as an internal standard solution, uniformly mixing, adding a potassium hydroxide aqueous solution, uniformly mixing, refluxing to obtain a saponifying solution, and cooling; (2) extracting: transferring the saponifying solution into a tap funnel, washing with ether, mixing the ether washing liquid into the tap funnel, shaking, carrying out standing layering, and removing the aqueous layer; (3) washing: washing with water until the aqueous layer does not present the alkaline state; (4) concentrating: loading the ether extraction solution into anhydrous sodium sulfate, filtering into a rotary evaporation flask, rinsing the tap funnel and the anhydrous sodium sulfate with ether, mixing the washing liquids, adding to the rotary evaporation flask, carrying out pressure reducing distillation, carrying out blow-drying with nitrogen gas, and immediately adding an ethanol aqueous solution to dissolve; and (5) using an ultra high-performance liquid chromatograph to determine.

Description

technical field [0001] The invention relates to a method for simultaneously determining the content of vitamins A and E in health care products. Background technique [0002] Vitamin A (vitaminA), also known as retinol (its aldehyde derivative retinal) or anti-dry eye factor, is an unsaturated monohydric alcohol with an alicyclic ring, including two kinds of vitamin A1 and A2 from animal food sources. A class of substances with retinol biological activity. Vitamin A1 is mostly stored in the liver of mammals and saltwater fish, while vitamin A2 is often stored in the liver of freshwater fish. Since the activity of vitamin A2 is relatively low, vitamin A is usually referred to as vitamin A1. Main functions 1. It has the effect of regulating the metabolism of the epidermis and stratum corneum, which can resist aging and remove wrinkles. 2. It can reduce seborrhea and make the skin elastic, while diluting spots and softening the skin. 3. Helps to protect the epidermis, mucou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/88
Inventor 李星芝王俊全孙俊峰
Owner 天津优标技术检测服务有限公司
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