In Vitro Antimicrobial Activity and Effect on Biofilm Production of a White Grape Juice (Vitis vinifera) Extract

Evidence-based Complementary and Alternative Medicine : ECAM
Angela FilocamoMichele Navarra

Abstract

Background. The aim of the present study was to evaluate the antimicrobial effect of a white grape juice extract (WGJe) against a range of Gram-positive and Gram-negative bacteria, yeasts, and the fungus Aspergillus niger. WGJe was also tested on the production of bacterial biofilms in vitro. Results. WGJe inhibited in vitro most Gram-positive bacteria tested, Staphylococcus aureus ATCC 6538P being the most sensitive strain (MIC values of 3.9 μg/mL). The effect was bactericidal at the concentration of 500 μg/mL. Amongst the Gram-negative bacteria, Escherichia coli was the only susceptible strain (MIC and MBC of 2000 μg/mL). No effect on the growth of Candida sp. and the fungus Aspergillus niger was detected (MIC values > 2000 μg/mL). WGJe inhibited the biofilms formation of E. coli and Pseudomonas aeruginosa with a dose-dependent effect. Conclusions. WGJe exerted both bacteriostatic and bactericidal activity in vitro. The presented results could be used to develop novel strategies for the treatment of skin infections and against potential respiratory pathogens.

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Citations

Sep 27, 2016·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Nadia FerlazzoMichele Navarra
Apr 11, 2017·Natural Product Research·Vasigheh Sadat MirbagheriSedigheh Esmaeilzadeh Bahabadi
Jan 8, 2019·BMC Complementary and Alternative Medicine·Manuela D'ArrigoGiuseppina Mandalari
Apr 15, 2017·Evidence-based Complementary and Alternative Medicine : ECAM·Giuseppina MandalariMichele Navarra
Feb 17, 2021·Veterinary Medicine and Science·Sawsan M A El-SheikhAzza A A Galal
Mar 7, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Giuseppe MontalbanoAntonino Germanà
Aug 9, 2019·Journal of Agricultural and Food Chemistry·Yousef I HassanMoussa S Diarra

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Methods Mentioned

BETA
ELISA

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