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  • Title: Indonesian propolis: chemical composition, biological activity and botanical origin.
    Author: Trusheva B, Popova M, Koendhori EB, Tsvetkova I, Naydenski C, Bankova V.
    Journal: Nat Prod Res; 2011 Mar; 25(6):606-13. PubMed ID: 21409722.
    Abstract:
    From a biologically active extract of Indonesian propolis from East Java, 11 compounds were isolated and identified: four alk(en)ylresorcinols (obtained as an inseparable mixture) (1-4) were isolated for the first time from propolis, along with four prenylflavanones (6-9) and three cycloartane-type triterpenes (5, 10 and 11). The structures of the components were elucidated based on their spectral properties. All prenylflavanones demonstrated significant radical scavenging activity against diphenylpicrylhydrazyl radicals, and compound 6 showed significant antibacterial activity against Staphylococcus aureus. For the first time Macaranga tanarius L. and Mangifera indica L. are shown as plant sources of Indonesian propolis.
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