Aiming at finding natural sources of antidiabetics agents, 15 extracts from Brazilian medicinal plants of the Atlantic Forest and Amazon region were tested against α-glucosidase enzyme. Plants were selected based on the taxonomic relationships with genera including several species with antidiabetic activity. In this screening, the extracts obtained from the flowers of and the leaves of resulted endowed with promising anti-α-glucosidase activity. The extracts from and from collected in two different areas, were characterised by ultra-high performance liquid chromatography coupled to mass spectrometry. Bioassay-guided fractionation led to the identification of several enzyme inhibiting compounds, among them the mechanism of action of naringenin and pinocembrin was investigated. The two extracts showed differences in bioactivity and in the phytochemical profiles. The fractionation of the extract from led to a partial loss of the inhibitory effect.
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| http://dx.doi.org/10.1080/14756366.2021.2022658 | DOI Listing |
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