Table 3.

Antimicrobial activity of Ag NPs of C. longa against E. coli and B. subtilis where (AgS—Ag NPs of sample collected from Shimla, AgM—Ag NPs of sample collected from Mandi, AgB—Ag NPs of sample collected from Bilaspur). The inhibitory zones (in mm) of Ag NPs was measured by Hi media scale at different concentrations.

S. no.	NPs	Bacterial strains	Inhibition zones (in mm)
			Antibiotic 50 µg/ml	150 µg/ml	200 µg/ml	250 µg/ml	300 µg/ml
1	AgS	B. subtilis	20.01 ± 0.57	14.33 ± 0.57	16.01 ± 0.01	17.33 ± 0.57	18.66 ± 1.54
2	AgS	E. coli	16.66 ± 0.57	10.66 ± 0.57	12.33 ± 0.57	13.33 ± 0.57	14.33 ± 0.57
3	AgM	B. subtilis	19.66 ± 0.57	13.66 ± 1.15	15.66 ± 1.15	17.00 ± 1.00	18.33 ± 0.57
4	AgM	E. coli	16.33 ± 0.57	10.33 ± 0.57	11.33 ± 0.57	12.66 ± 0.57	14.00 ± 0.57
5	AgB	B. subtilis	16.64 ± 0.01	13.64 ± 0.57	14.66 ± 0.57	16.66 ± 1.15	18.00 ± 1.00
6	AgB	E. coli	16.01 ± 0.01	10.00 ± 0.57	10.66 ± 0.57	11.66 ± 0.57	13.33 ± 0.57