Curious Case of Bactericidal Action of ZnO

Table 1

Different physicochemical properties and minimum inhibition concentration (MIC) values.

Materials	Surface area (m^2/g)	Solubility (μg mL^−1)	EPR peak area (a.u. × 10^6)	S. aureus		E. coli
				MIC (μg mL^−1)		MIC (μg mL^−1)
				Without GSH	With GSH	Without GSH	With GSH
ZnO	23.81 ± 0.23	6.40 ± 0.52	05.01 ± 0.23	101.66 ± 2.88	133.33 ± 2.88	125.00 ± 5.00	168.33 ± 2.88
ZnO-H	37.51 ± 0.16	7.63 ± 0.23	04.89 ± 0.66	76.66 ± 2.88	96.66 ± 2.88	96.66 ± 2.88	91.66 ± 2.88
ZnO-300	41.84 ± 0.89	8.38 ± 0.18	07.91 ± 0.53	28.33 ± 2.88	71.33 ± 7.09	43.33 ± 2.88	88.33 ± 2.88
ZnO-400	40.23 ± 0.57	8.58 ± 0.15	15.73 ± 0.33	11.66 ± 2.88	66.66 ± 2.88	26.66 ± 2.88	98.33 ± 2.88
ZnO-500	41.39 ± 0.63	8.37 ± 0.13	20.89 ± 0.52	8.33 ± 2.88	61.66 ± 2.88	13.33 ± 2.88	101.66 ± 2.88