Table 3.

MIC of AgNPs against Gram negative and Gram-positive bacteria.

Bacteria	Diatoms
	Thalassiosira	Skeletonema	Chaetoceros	Control
Bacillus subtilis	18 mm ± 0.6	12 mm ± 1.5	16 mm ± 0.7	15 mm ± 1.8
S. pneumoniae	16 mm ± 0.8	11 mm ± 0.6	12 mm ± 1.2	12 mm ± 1.0
E. coli	20 mm ± 1.0	17 mm ± 1.0	16 mm ± 0.9	17 mm ± 0.9
S. aureus	15 mm ± 1.5	12 mm ± 1.1	12 mm ± 1.5	10 mm ± 0.6
Aeromonas	15 mm ± 1.7	14mm ± 1.3	13 mm ± 0.2	13 mm ± 0.1