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Zeta potential analysis: effect of CPB-kaolinite to the growth of bacteria

Ramli, Nur Isti’anah and Nik Malek, Nik Ahmad Nizam and Mohd. Hanim, Siti Aishah and Mad Salim, Mashitah and Md. Saad, Nor Syafawani Sarah and Hamdan, Salehhuddin (2014) Zeta potential analysis: effect of CPB-kaolinite to the growth of bacteria. In: 2nd International Science Postgraduate Conference 2014 (ISPC 2014), 10-12 Mac, 2014, Skudai, Johor.



The formation of cetylpyridinium bromide (CPB) loaded onto natural kaolinite from Indonesia with different initial CPB concentration ([CPB]i) was studied through zeta potential analysis. From the data obtained, CPB molecules have been attached to the surface of kaolinite structure indicated by the changes of the zeta potential value of the modified kaolinite with CPB from negative charge to positive charge. In detail, as the concentration of CPB achieved its critical micelle concentration (CMC) level at ~0.9 mM, the sample with [CPB]i below CMC level show negative value of zeta potential and vice versa. Interestingly, there is no growth of bacteria at sample modified with CPB concentration above CMC level of CPB. Hence, the modified kaolinite was successful inhibit growth of bacteria at a certain amount of CPB molecules attached to the kaolinite surface.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:zeta potential, antibacterial agent
Subjects:R Medicine > R Medicine (General)
Divisions:Biosciences and Medical Engineering
ID Code:61464
Deposited By: Fazli Masari
Deposited On:25 Apr 2017 08:23
Last Modified:25 Apr 2017 08:23

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