Relationship of cell surface charge and hydrophobicity to strength of attachment of bacteria to cantaloupe rind.

摘要: The cantaloupe melon has been associated with outbreaks of Salmonella infections. It is suspected that bacterial surface charge and hydrophobicity may affect attachment complicate detachment from surfaces. strains Salmonella, Escherichia coli (O157:H7 non-O157:H7), Listeria monocytogenes were determined by electrostatic hydrophobic interaction chromatography, respectively. Initial to surfaces the ability bacteria resist removal washing water compared hydrophobicity. Whole cantaloupes submerged in inocula containing individual or cocktails E. coli, L. monocytogenes, either as a mixture all three genera belonging single genus, for 10 min. Inoculated dried 1 h biosafety cabinet then stored up 7 days at 4 degrees C. melons washed water, still attached surface, well those wash enumerated. was highest lowest but exhibited strongest on 0, 3, 7. When mixed-genus used, relative ware altered. strongest. more extensive than There linear correlation between cell (r2 = 0.767), negative 0.738), positive 0.724) strength