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Original Research Article | OPEN ACCESS

Microbiological Assessment of Commercially Available Quinine Syrup and Water for Injections in Dar Es Salaam, Tanzania

Kennedy D Mwambete1 , Mary Justin Temu2, Fatema S Fazleabbas3

1Department of Pharmaceutical Microbiology; 2Department of Pharmaceutics Muhimbili University of Health & Allied Sciences, School of Pharmacy, P.O. Box 65013; 3Muhimbili National Hospital, P.O. Box 6500, Dare es Salaam, Tanzania.

For correspondence:-  Kennedy Mwambete   Email: kmwambete@muhas.ac.tz   Tel:+2552221503026

Received: 12 February 2009        Accepted: 10 June 2009        Published: 23 October 2009

Citation: Mwambete KD, Temu MJ, Fazleabbas FS. Microbiological Assessment of Commercially Available Quinine Syrup and Water for Injections in Dar Es Salaam, Tanzania. Trop J Pharm Res 2009; 8(5):441-447 doi: 10.4314/tjpr.v8i5.9

© 2009 The authors.
This is an Open Access article that uses a funding model which does not charge readers or their institutions for access and distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0) and the Budapest Open Access Initiative (http://www.budapestopenaccessinitiative.org/read), which permit unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited..

Abstract

Purpose: To conduct microbiological assessment of commercially available quinine syrups and water for injection in Dar es Salaam, Tanzania.
Methods:  This was a cross-sectional study conducted in Dar es Salaam Region. Samples of quinine syrups (QNSs) and water for injection (WFI) of different batches were randomly purchased. Each QNS was inspected for label disclosure, and physicochemical properties were examined by the use of sense of organs and pH meter. Isolation and quantification of microbial contaminants from each sample was preceded by 24 - 48 h incubation at 37 ºC, and the microbial contaminants were expressed as colony forming unit per millilitre (cfu/ml). Microbiological identification of contaminants was performed by examination of colony morphologies and growth characteristics. Gram staining technique, as well as biochemical and serological tests were also conducted for further identification. Albino rabbits were used for the pyrogen test to determine the presence of microbial contamination in WFI.
Results: Twenty-four samples of QNS underwent label disclosure, physical-chemical and microbiological assessments. All QNS samples complied with the guidelines and microbial limits as per United States Pharmacopoeia (USP). All batches of WFI were found to be microbiologically contaminated, revealing average microbial counts of 87, 94 and  100 cfu/ml, and this was buttressed by pyrogen test, with the animals showing temperature rise of 1.0, 2.2 and 2.4 ºC, respectively.
Conclusion:  The QNS products available in the Dar es Salaam market were of good microbial quality. However, WFI products were microbiologically contaminated. We recommend that regulatory authorities in Tanzania should diligently enforce regulatory control of the products to assure consumer safety.

Keywords: Microbiological quality, quinine syrups, water for injection, pyrogen test

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