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Journal of Applied Sciences and Environmental Management
World Bank assisted National Agricultural Research Project (NARP) - University of Port Harcourt
ISSN: 1119-8362
Vol. 17, No. 4, 2013, pp. 483-490
Bioline Code: ja13054
Full paper language: English
Document type: Research Article
Document available free of charge

Journal of Applied Sciences and Environmental Management, Vol. 17, No. 4, 2013, pp. 483-490

 en Antimicrobial Activity of Cu, Ni Carboxylates of Castor ( Ricinus communis check for this species in other resources ) Seed Oil and Their Calcinated Derivatives
FOLARIN, O.M; OLUMAYEDE, E.G; NWACHUKWU, P.C & FAKOYA, S.

Abstract

Copper and nickel carboxylates of castor seed oil were prepared by metathesis in aqueous ethanol.The FTIR spectra of the carboxylates are characterized by two asymmetric vibrations of the carboxylate group and two symmetric vibrations.For Cu carboxylate,the values are 1594 &1532cm-1 and 1458 & 1409cm-1while those of Ni carboxylate were observed at 1561 & 1513cm-1 and 1469 & 1412cm-1 respectively indicating that the carboxylates existed as bridging bidentate structure and confirmed their formation. The carboxylates were calcinated in muffle furnace at 400oC to obtain blackish derivatives. Antimicrobial activities of the carboxylates and their calcinated derivatives were assayed using modified Kirby Bauer disc diffusion method against two groups of medically implicated bacterial species, viz: Gram positive organisms ( Staphylococcus aureus check for this species in other resources and Streptococcus faecalis check for this species in other resources ,) and Gram negative organisms ( Pseudomonas fluorescence check for this species in other resources , Salmonella thypii check for this species in other resources , Klebsiella pneumonia check for this species in other resources and Proteus mirabilis check for this species in other resources ). It was observed that the antimicrobial potencies of the carboxylates and their derivatives compared favourably with the standard antibiotics used for the assay. However, calcinated derivative of Ni carboxylate showed a quite significant increase in the antimicrobial potency against both gram negative andgram positive microorganisms when compared with its carboxylate.

Keywords
Antimicrobial Activity of Cu, Ni Carboxylates of Castor

 
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