World Health Organization (WHO) reported that 88% of its member or 61 countries acknowledge the use of traditional and complementary medicines. Persicaria odorata is being used as traditional herbs to treat fever, nausea and promoting hair growth. Besides, it is used as an anti-inflammatory agent in Vietnam to relieve swelling and treat wounds, sores, and ulcers. This review aims to evaluate the phytochemical and pharmacological status of P. odorata. P. odorata is a plant with a high content of phenols and flavonoids. Among the essential chemical constituents in the P. odorata are methyl gallate, (+)-catechin, eupatoriochromene, n-dodecanal, polygonumins A, α-humulene and anthraquinone. P. odorata also exerts many pharmacological effects such as antioxidant, anti-inflammatory, antibacterial and anticancer effects. The commonly used part of P. odorata for extraction are leaves followed by the aerial part, rhizomes and stems. Nevertheless, more studies are needed to identify the efficacy and toxicity of P. odorata. New drugs could be developed from the active compounds of P. odorata in the future.
Medicinal plants play important roles in the treatment of various diseases. The aim of this review is to compile and document the phytochemical properties and the pharmacological effect in different parts of the various extracts of Hibiscus rosa-sinensis. The information was collected from various electronic databases such as Google Scholar, PubMed, Web of Science, Science Direct, Scifinder and articles published in English. Previous studies have revealed that the leaves of the plant contain important constituents such as tannins, saponins, glycosides, flavonoids, and terpenoids, while the petals contain compounds such as quercetin, kaempferol, and anthocyanins. The chemical composition of the plant may vary depending on the color of the petals, with red petals having more anthocyanins and white petals having slightly higher levels of tannins. The anti-inflammatory, antioxidant, anti-microbial and anti-diabetic activity of Hibiscus rosa-sinensis have been documented. This review will contribute to a more organized finding on the pharmacological effects of Hibiscus rosa sinensis and invigorate further studies.
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