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Preparation and characterization of an anti-inflammatory agent based on a zinc-layered hydroxide-salicylate nanohybrid and its effect on viability of Vero-3 cells

Authors Ramli M, Hussein MZ , Yusoff K

Received 5 October 2012

Accepted for publication 28 November 2012

Published 16 January 2013 Volume 2013:8(1) Pages 297—306

DOI https://doi.org/10.2147/IJN.S38858

Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 2



Munirah Ramli,1,2 Mohd Zobir Hussein,1,3 Khatijah Yusoff4

1Advanced Materials and Nanotechnology Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, Serdang, Selangor, 2Department of Industrial Biotechnology, Faculty of Biosciences and Bioengineering, Universiti Teknologi Malaysia, Skudai, Johor, 3Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, Serdang, Selangor, 4Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia

Abstract: A new organic-inorganic nanohybrid based on zinc-layered hydroxide intercalated with an anti-inflammatory agent was synthesized through direct reaction of salicylic acid at various concentrations with commercially available zinc oxide. The basal spacing of the pure phase nanohybrid was 15.73 Å, with the salicylate anions arranged in a monolayer form and an angle of 57 degrees between the zinc-layered hydroxide interlayers. Fourier transform infrared study further confirmed intercalation of salicylate into the interlayers of zinc-layered hydroxide. The loading of salicylate in the nanohybrid was estimated to be around 29.66%, and the nanohybrid exhibited the properties of a mesoporous-type material, with greatly enhanced thermal stability of the salicylate compared with its free counterpart. In vitro cytotoxicity assay revealed that free salicylic acid, pure zinc oxide, and the nanohybrid have a mild effect on viability of African green monkey kidney (Vero-3) cells.

Keywords: anti-inflammatory, salicylic acid, zinc-layered hydroxide, zinc oxide, nanohybrid, cytotoxicity

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