Abstract
Pharmaceutical activities of a fungus depend on its bioactive compounds composition. Pleurotus tuber-regium (paleotropical species) is a fungus used in Gabon and throughout tropical Africa for its culinary and medicinal properties. The aim of this study was to predict the therapeutic potential of this species, in particular of its carpophore and its sclerotia, based on the main chemical groups highlighted during the chemical screening of aqueous, hydro-ethanolic and ethanolic extracts. Chemical screening revealed that the three extracts (aqueous, hydro-ethanolic and ethanolic) prepared from the carpophore are rich in total polyphenols, alkaloids, coumarins and proanthocyanidins. Aqueous and hydro-ethanolic extracts are moderately rich in tannins and coumarins while the ethanolic extract is very rich in reducing sugars. About the sclerotia, the three extracts are rich in total polyphenols, alkaloids, reducing sugars and proanthocyanidins. Aqueous and hydro-ethanolic extracts are moderately rich in tannins, total flavonoids and coumarins. The dosage of phenolic compounds carried out on aqueous and hydro-ethanolic extracts confirmed the richness of this fungus in total polyphenols and proanthocyanidins, as well as its deficiency in flavonoids and tannins. The chemical groups thus identified in the carpophore and the sclerotium of P. tuber-regium allow to predict its antioxidant, antiallergic, antiplasmodial, anesthetic, analgesic, anticancer, vasodilator, anti-inflammatory and ant-mutagenic activities.
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