Journal
EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE
Volume 2015, Issue -, Pages -Publisher
HINDAWI LTD
DOI: 10.1155/2015/856243
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Funding
- Sicily Region (PO FESR Sicilia) [CUP G73F11000050004]
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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 mu g/mL). The effect was bactericidal at the concentration of 500 mu g/mL. Amongst the Gram-negative bacteria, Escherichia coli was the only susceptible strain (MIC and MBC of 2000 mu g/mL). No effect on the growth of Candida sp. and the fungus Aspergillus niger was detected (MIC values >2000 mu g/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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