Alaribe, Chinwendum StephenieEsposito, TizianaSansone, Francesca2023-05-092023-05-092019-11-081029-23491478-6419http://hdl.handle.net/123456789/1742Propolis is an attractive natural ingredient to design health products due to its pharmacological effects. Our chemical investigation of a polar extract of Nigerian propolis (NP) led the isolation and identification of five isoflavonoids (1-4, 6), one diarylpropane (5) and one prenylated flavanone (7) by the combination of chromatographic and spectroscopic techniques. Compounds 1, 4 and 7 were found to be the main markers in NP (8.0, 5.0 and 4.0 mg/g of dry extract, respectively). Moreover, NP and its phenolic constituents exhibited in vitro free radical scavenging activity together with a promising antidiabetic effect against α-amylase and α-glucosidase enzymes. Finally, NP showed also a moderate inhibition of Helicobacter pylori growth. These results suggested that NP could be a good candidate in nutraceuticals and food products.enα-amylase and α-glucosidase enzymesNigerian propolispolyphenols free-radical scavenging activityHelicobacter pyloriUniversité de OuagaACEDHARSACE: Drug Research, Herbal Medicine Development and Regulatory ScienceArticle