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E.coli population kinetics, log (cfu/g) recovered from inoculated OF and BP after individual treatments by (5a) ozone for different durations (t=0, 5, 10, 12, 15, 17.5, 20 min) and (5b) UV and (5c) IR for different durations (t=0, 2, 5, 10, 20 min). Error bars, SD, n =2.
