Effects of UV light and pH on the survival of microencapsulated and free phages.

Microencapsulated (ME) and free phages were exposed to UV light for 15 and 30 min (A) or incubated at different pH values for 5 min at 37°C (B). Values are expressed as the phage survival percentage and represents mean ± SEM of three independent experiments. *, P<0.001; **, P<0.05 compared to free phages.