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A method for improving the stability of carmine radish geranium

A technology of geranium and rouge, which is applied in organic chemistry, anti-toxic agents, drug combinations, etc., can solve the problems of poor acylation effect, low anthocyanin activity, and high reaction energy consumption, and achieve good stability and anti-oxidation Activity, high degree of acylation, and easy-to-obtain raw materials

Active Publication Date: 2021-05-11
YANGTZE NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a method for improving the stability of carmine radish geranoidin, which solves the problems of poor acylation effect, high reaction energy consumption, complicated operation and cyanine deficiency in existing acylation methods. The problem of low activity

Method used

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  • A method for improving the stability of carmine radish geranium
  • A method for improving the stability of carmine radish geranium
  • A method for improving the stability of carmine radish geranium

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Embodiment 1

[0031] 1) Preparation of salicylic acid solution: Accurately weigh 0.2g of salicylic acid and dissolve it in 10mL of boiling water to obtain a concentration of 0.02g·mL -1 salicylic acid solution;

[0032] 2) Extraction of carmine radish geranium: Weigh 2.0g radish powder, add acidified 75% ethanol (10% hydrochloric acid) at a material-to-liquid ratio of 1:10 (g / ml); ultrasonically extract for 15 minutes, and the single working time is 10s. The interval time is 10s; after leaching in a constant temperature water bath at 55°C for 30 minutes, use AB-8 resin for preliminary separation, collect the eluent, concentrate, vacuum freeze-dry and dissolve in methanol to obtain the crude product;

[0033] 3) Separation of carmine pelargonidin: the crude product obtained in step 1) was separated by semi-preparative high performance liquid chromatography XCharge C 18 column (20 mm×250 mm, 10 μm); the column temperature 30 ℃, mobile phase A: 3% formic acid solution, mobile phase B: methano...

Embodiment 2

[0036] 1) Preparation of salicylic acid solution: Accurately weigh 1 g of salicylic acid and dissolve it in 10 mL of boiling water to obtain a concentration of 0.1 g·mL -1 salicylic acid solution;

[0037] 2) Extraction of carmine radish geranium: Weigh 2.0g radish powder, add acidified 75% ethanol (10% hydrochloric acid) at a material-to-liquid ratio of 1:10 (g / ml); ultrasonically extract for 15 minutes, and the single working time is 10s. The interval time is 10s; after leaching in a constant temperature water bath at 55°C for 30 minutes, use AB-8 resin for preliminary separation, collect the eluent, concentrate, vacuum freeze-dry and dissolve in methanol to obtain the crude product;

[0038] 3) Separation of carmine pelargonidin: the crude product obtained in step 1) was separated by semi-preparative high performance liquid chromatography XCharge C 18 column (20 mm×250 mm, 10 μm); the column temperature 30 ℃, mobile phase A: 3% formic acid solution, mobile phase B: methano...

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Abstract

The invention discloses a method for improving the stability of carmine radish geranoidin. Salicylic acid is used as an acylating agent to modify the carmine radish geranoidin, and the reaction is carried out at normal temperature and pressure, which reduces the energy consumption of the reaction and has mild reaction conditions. , the original structure and activity of geranium are effectively maintained, the degree of acylation is high, the whole process is simple, easy to control, the raw materials are readily available, and the cost is low. The acylated carmine geranoidin obtained by the present invention has significantly improved its response to light, temperature, Al 3+ , alkaline environment and the stability of hydrogen peroxide, acylated geranoids have no effect on the antioxidant activity in vitro, therefore, the acylated carmine geranoids of the present invention have good stability and antioxidant activity, and can be widely used in Food, health products, cosmetics, medicine and other fields.

Description

technical field [0001] The invention relates to the technical field of geranoid modification, in particular to a method for improving the stability of carmine geranoid. Background technique [0002] Anthocyanin is a natural pigment of the genus flavonoids, which widely exists in plants with different colors, such as blueberry, blackberry and purple sweet potato, and often forms anthocyanin with various glycosides in a natural state. Carmine radish (Carmine radish) is a unique vegetable variety in Fuling District, Chongqing City. It is mainly used to prepare edible red pigment. The research found that the red pigment is anthocyanin geranium. According to the research results of anthocyanins at home and abroad, geranium has the functions of scavenging free radicals, protecting and improving eyesight, treating cardiovascular diseases, preventing obesity, preventing brain aging, anti-cancer, skin care, anti-aging, and has antibacterial activity. and anti-fatigue effects. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D311/62A61P39/06
CPCA61P39/06C07D311/62
Inventor 梁姗刘欢
Owner YANGTZE NORMAL UNIVERSITY
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