title: Antimicrobial Activity of Olive Mill Wastewater Extract AgainstPseudomonas FluorescensIsolated from Mozzarella Cheese.
abstract: Olive mill wastewater polyphenol extract was tested for antimicrobial activity against 64 strains ofPseudomonas fluorescensresponsible for mozzarella discolouration. The extract showed a minimum inhibitory concentration (MIC)50value of 5 mg/mL and a MIC90value of 7 mg/mL. The MBC50and MBC90values corresponded to 6 and 8 mg/mL, respectively. The MIC concentration (7 mg/mL) was demonstrated to have a bacteriostatic effect while maintaining the bacterial concentration on the levels of the inoculum for 48 hours. The 3/2 MIC concentration was responsible for four logs CFU/mL depletion in colony count after 24 h. As the extract concentration decreased from MIC value, no inhibitory effects were recorded.
authors: Institute for Experimental Veterinary Medicine of Umbria and Marche , Perugia, Italy.
authors: Rossana
authors: R
authors: Roila
authors: Department of Veterinary Medicine, University of Perugia , Perugia, Italy.
authors: Raffaella
authors: R
authors: Branciari
authors: Department of Veterinary Medicine, University of Perugia , Perugia, Italy.
authors: David
authors: D
authors: Ranucci
authors: Institute for Experimental Veterinary Medicine of Umbria and Marche , Perugia, Italy.
authors: Roberta
authors: R
authors: Ortenzi
authors: Department of Agricultural, Food, and Environmental Sciences, University of Perugia , Perugia, Italy.
authors: Stefania
authors: S
authors: Urbani
authors: Department of Agricultural, Food, and Environmental Sciences, University of Perugia , Perugia, Italy.
authors: Maurizio
authors: M
authors: Servili
authors: Institute for Experimental Veterinary Medicine of Umbria and Marche , Perugia, Italy.
authors: Andrea
authors: A
authors: Valiani
keywords: Antibacterial; By-product; Olive mill wastewater; Polyphenols; Pseudomonas fluorescens