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Oxidative stress induced by free radicals is an important factor in the development of cancer, aging, and cardiovascular disease, and exogenous administration of antioxidants has been shown to contribute to the treatment and prevention of these related diseases.In recent years, the antioxidant effect of Chinese herbal medicine and its extract has attracted wide attention.Natural antioxidants are rich in polyphenols and flavonoids, which can remove excessive free radicals in the body and regulate the oxidation-reduction state. Exogenous supplementation of apple polyphenols, anthocyanins, tea polyphenols and other natural antioxidants can prevent and treat the above diseases.
Centella asiatica extract contains triterpenes, flavonoids, centella glycosides and other chemical components.After the preliminary separation and extraction of centella asiatica, and after polarity extraction, it was found that all the extracts of centella asiatica had antioxidant activity, among which the ethyl acetate phase was the strongest.The folin method was used to determine the content of polyphenols in the extracts of different phases.
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