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Method for improving stability of carmine radish pelargonidin

A technology of geranium and carmine radish, which is applied in antitoxic agents, organic chemistry, drug combination, etc., can solve the problems of poor acylation effect, low activity of anthocyanins, and high reaction energy consumption, and achieve good antioxidant activity, acylation The effect of high degree of chemical transformation and easy availability of raw materials

Active Publication Date: 2019-04-19
YANGTZE NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
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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

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  • Method for improving stability of carmine radish pelargonidin
  • Method for improving stability of carmine radish pelargonidin
  • Method for improving stability of carmine radish pelargonidin

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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 was 10s; after leaching in a constant temperature water bath at 55°C for 30 minutes, the AB-8 resin was used for preliminary separation, the eluate was collected and concentrated, and after vacuum freeze-drying, it was dissolved 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 ...

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 was 10s; after leaching in a constant temperature water bath at 55°C for 30 minutes, the AB-8 resin was used for preliminary separation, the eluate was collected and concentrated, and after vacuum freeze-drying, it was dissolved 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 ...

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Abstract

The invention discloses a method for improving the stability of carmine radish pelargonidin. Salicylic acid is used as an acylating agent for modification of carmine radish pelargonidin. The reactionis carried out at normal temperature and at normal pressure, the reaction consumption is reduced, the reaction condition is mild, the original structure and activity of pelargonidin are effectively maintained, and the acylation degree is high. The whole process is simple and easy to control; the raw materials are easily available; and the cost is low. The acylated radish geranium obtained by the invention significantly improves the stability to light, temperature, Al<3+>, alkaline environment and hydrogen peroxide, and the acylated pelargonidin has no effect on the antioxidant activity in vitro. Therefore, the acylated carmine radish pelargonidin has good stability and antioxidant activity and can be widely applied in food, health-care 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 Applications(China)
IPC IPC(8): C07D311/62A61P39/06
CPCA61P39/06C07D311/62
Inventor 梁姗刘欢
Owner YANGTZE NORMAL UNIVERSITY
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