Flavanone Glycosides, Triterpenes, Volatile Compounds and Antimicrobial Activity of Miconia minutiflora (Bonpl.) DC. ( Melastomataceae ).
Nathália Siso FerreiraMarcia Moraes CascaesLourivaldo da Silva SantosMozaniel Santana de OliveiraMaria das Graças Bichara ZoghbiIsabella Santos AraújoAna Paula Trovatti UetanabaroEloísa Helena de Aguiar AndradeGiselle Maria Skelding Pinheiro GuilhonPublished in: Molecules (Basel, Switzerland) (2022)
Chemical composition of the essential oils and extracts and the antimicrobial activity of Miconia minutiflora were investigated. The flavanone glycosides, pinocembroside and pinocembrin-7-O-[4″,6″-HHDP]-β-D-glucose, were identified, along with other compounds that belong mainly to the triterpene class, besides the phenolics, gallic acid and methyl gallate. Sesquiterpenes and monoterpenes were the major compounds identified from the essential oils. Screening for antimicrobial activity from the methanolic extract of the leaves showed that the MIC and MMC values against the tested microorganisms ranged from 0.625 to 5 mg·mL -1 and that the extract was active against microorganisms, Staphyloccocus   aureus , Escherichia coli, and Bacillus   cereus .