4.7 Article

Antimicrobial activity of Apis mellifera L. and Trigona sp. propolis from Nepal and its phytochemical analysis

期刊

BIOMEDICINE & PHARMACOTHERAPY
卷 129, 期 -, 页码 -

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ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.biopha.2020.110435

关键词

Propolis; Antibacterial and antifungal activity; Dereplication; Antibiotics; Nepal

资金

  1. Wroclaw Medical University [SUB.D110.19.005, SUB.A130.19.021]
  2. Wroclaw Medical University Foundation

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In this study, we evaluated antimicrobial activity, antimicrobial activity in combination with antibiotics, and chemical composition of Nepalese propolis 70% ethanolic extracts. Propolis originated from two genera of bees-Apis mellifera L. and Trigona sp. HPLC-DAD-MS/MS analyses revealed that the composition of both extracts was almost the same and the main components were flavonoid aglycones (mainly neoflavonoids, isoflavonoids) and pterocarpans. The highest antibacterial activity (disc diffusion test) was observed against Helicobacter pylori, Staphylococcus aureus and Shigella flexneri. Antibiotics exhibited synergism with Apis mellifera L. and Trigona sp. propolis against S. aureus and the strongest effect was observed for the combination with amikacin and tetracycline. Moreover, Nepalase propolis inhibited filamentation of C. albicans and caused oxidative stress by production of the superoxide anion radical (O-2(center dot-)) and a lower concentration of the hydroxyl radical (OH center dot). Propolis extracts are potent antibacterial agents and may be used in combination with antibiotics.

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