Antibacterial activity of CTAB-modified zeolite NaY with different CTAB loading

Mashitah Mad Salim, Nik Ahmad Nizam Nik Malek, Nur Isti’anah Ramli, Siti Aishah Mohd Hanim, Salehhuddin Hamdan


The antibacterial activity of cetyltrimethyl ammonium bromide (CTAB) –Modified Zeolite NaY against Escherichia coli and Staphylococcus aureus was examined in agar disk diffusion (Kirby-Bauer) method. The diameter of the inhibition zones for E. coli and S. aureus, increased from 1.5 to 1.7 cm and 1.9 to 2.0 cm, respectively, with the increasing concentrations of CTAB adsorbed on Zeolite NaY from percent coverage of the External Cation Exchange Capacity of Zeolite NaY: 0.5 to 5.0. CTAB-Modified Zeolite NaY showed effective antimicrobial activity against S. aureus compared to E. coli.




Cetyltrimethyl ammonium bromide (CTAB); Zeolite NaY; Cation Exchange Capacity; Escherichia coli; Staphylococcus aureus

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