Production of Antimicrobial Substances by Bacteria Isolated from Fermented Table Olives |
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Authors: | Ana Rubia-Soria Hikmate Abriouel Rosario Lucas Nabil Ben Omar Magdalena Martínez-Cañamero Antonio Gálvez |
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Affiliation: | (1) Departamento de Ciencias de la Salud, Area de Microbiología. Facultad de Ciencias Experimentales, Universidad de Jaén, 23071 Jaén, Spain |
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Abstract: | Summary The production of antimicrobial substances was studied among 195 bacterial isolates from retail table olives. A total 86 isolates tested positive, and they clustered in 10 groups according to their inhibitory spectra. Many isolates (38.37%) produced strong inhibition against all bacteria tested (Listeria innocua, Lactococcus lactis, Bacillus cereus, B. megaterium, Staphylococcus aureus, Micrococcus luteus, Enterococcus faecalis, and Escherichia coli). The selected bacterial isolates were Gram-positive bacteria with rod morphology (62.67%), short rods (26.65%) or cocci (10.67%). Isolates producing antimicrobial substances may be useful as starters to enhance control of table olive fermentation and improve the safety of retail table olives. |
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Keywords: | antimicrobial substances fermented olives lactic acid bacteria |
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