Method for protecting living body in radialization of UV-B using catechuic acid

A technology of catechins and organisms, applied in the direction of application, biocide, animal repellent, etc.

Inactive Publication Date: 2005-06-29
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

No reports on protection from UV-B ultraviolet radiation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] After spraying Arabidopsis seedlings with 100-150mg / L aqueous solution of this preparation, carry out UV-B (280-320nm) radiation treatment with an intensity of 100 microwatts / minute for 2 hours. The results showed that the Arabidopsis plants sprayed with this preparation had good uprightness, strong leaf tension, and did not show obvious damage symptoms, while the control sprayed with distilled water showed obvious wilting symptoms. Gene activity analysis showed that the expression activities of Arabidopsis thaliana chalcone synthase gene (CHS) and phenylalanine ammonia lyase gene (PAL) sprayed with this preparation before ultraviolet radiation were significantly higher than those of the control sprayed with distilled water.

[0017] The Arabidopsis thaliana that has obvious damage after UV-B treatment is sprayed with the 100mg / L aqueous solution of this preparation, and placed under normal light (3000lux) conditions for cultivation, the Arabidopsis thaliana treated with...

Embodiment 2

[0019] Prepare catechin into an aqueous solution with a content of 150-200mg / L, or emulsion, or gel, and apply it to people's daily sunscreen and skin care. damaged skin. After comparing with those who do not use this preparation, it is found that the use of this preparation can significantly inhibit the appearance of skin ultraviolet erythema and the formation of melanin, and can effectively prevent sun protection and whitening; any adverse reactions.

[0020] The present invention proposes to use catechins to resist the radiation of UV-B to organisms. Because catechins are derived from natural plant-tea leaves, tea is a healthy drink for human beings without any toxic and side effects. Therefore, catechins are used as sunscreen and skin care products It is safe for people to resist UV-B radiation, and the production process is pollution-free, so it has a good application prospect.

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PUM

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Abstract

Disclosed is a method for protecting living body in radialization of UV-B using catechuic acid, wherein catechuic acid is employed to preventing living body from radialization damage of UV-B, or recovering the living body damaged by UV-B. The content of [(-)-epigallocatechin-3-gallate(EGCG)] in the catechin is not lower than 40%, the content of ECG is not lower than 15%, the content of caffeine is no less than 2.5%.

Description

technical field [0001] The invention relates to a new application of effective components of tea, in particular to preventing and repairing organisms damaged by UV-B radiation by using catechin, an effective component of tea. Background technique [0002] Catechin and its derivatives are phenols. Catechin, namely flavanol monomer system phenol, is derived from tea extracts after decaffeination and recrystallization, accounting for 25% of the dry weight of tea extracts; or derived from tea polyphenols (Tea Polyphenols, TP), accounting for 60-80% of the total amount of tea polyphenols. [0003] Catechin and its derivatives contain: epigallocatechin gallate (EGCG), gallocatechin gallate (GCG), epicatechin gallate (ECG), catechin gallate (ECG), Epigallocatechin (EGC), Gallocatechin (GC), Epigallocatechin (EC). [0004] In the catechins involved in the present invention, the content of epigallocatechin gallate (EGCG) is not less than 40%, the content of epicatechin gallate (EC...

Claims

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Application Information

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IPC IPC(8): A01N43/16
Inventor 梁月荣陆建良
Owner ZHEJIANG UNIV
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