Development and Characterization of Polyphenon 60 and Caffeine Microemulsion for Enhanced Antibacterial Activity

Table 2

Zone of inhibition (mm) of different formulations against S. epidermidis and E. coli.

	Aq. P60	P60 ME	Aq. CAF	CAF ME	Aq. (P60 + CAF)	(P60 + CAF) ME	Placebo
S. epidermidis	12.83 ± 0.44	15.00 ± 0.58	11.5 ± 0.29	14.17 ± 0.44	16.17 ± 0.17	18.83 ± 0.60	8.27 ± 0.15
E. coli	11.83 ± 0.44	13.67 ± 0.17	10.17 ± 0.20	11.00 ± 0.29	14.50 ± 0.29	16.50 ± 0.29	7.57 ± 0.30

Mean values of three independent experiments and S.E. are shown. Only statistically significant outcomes at 𝑃<0.005 have been reported.