Antibiotic Susceptibility and Survival of Escherichia coli and Salmonella enteritidis in Sea Water Under Starvation Stress

Authors: Reşit ÖZKANCA, Nevzat ŞAHİN, Önder İDİL

Abstract: The survival of Escherichia coli and Salmonella enteritidis in sea water from an in shore region of the Black Sea, Türkiye, was observed. t99 value varied from 3 d at 30^0C to 8.5d at 4^0C for S. enteritidis in untreated water to 32.3 d at 4^0C in filtered-autoclaved water, and from 3 d at 30^0C in untreated water to 26.4 d at 4^0C in filtered-autoclaved water for E. coli. Values obtained in Whatman-filtered water were the same as those in untreated sea water, and for water which had been Millipore-filtered t99 values were between those for untreated and filtered-autoclaved water. The minimum inhibitory concentration of rifampicin, gentamicin, ceftazidim, streptomycin and oflaxocin for E. coli and S. enteritidis were also determined and found to decrease as the starvation period was extended at 4^0C, and particularly at 30^0C.

Keywords: Escherichia coli and Salmonella enteritidis survival, sea water, antibiotic resistance, starvation survival.