Table 1.

Antimicrobial properties of PVA/AgNPs membranes without and with BPTA.

Samples	Diameter of inhibition zone (mm)
	S. aureus	E. coli
PVA	ND	ND
PVA/AgNPs/BPTA-10 g/L	9.11 ± 0.03e	11.54 ± 0.14d
PVA/AgNPs/BPTA-30 g/L	13.43 ± 0.11d	13.41 ± 0.37c
PVA/BPTA-50 g/L	14.81 ± 0.06c	14.12 ± 0.14c
PVA/AgNPs/BPTA-50 g/L	15.94 ± 0.10b	15.55 ± 0.29b
PVA/AgNPs/BPTA-70 g/L	18.12 ± 0.08a	16.41 ± 0.05a

Values are presented as mean ± standard deviation. Different letters in the same column indicate significant differences (p < 0.05).