Abstract: Ten brands of hair cosmetics were randomly purchased from shops Zaria metropolis, Kaduna state in Nigeria, and were subjected to microbiological assessment for microbial quality and preservative capacity. The culture media used were Mueller-Hinton agar (MHA), Mueller-Hinton Broth (MHB) and Nutrient Agar (NA). These media were used for Sensitivity Test, determination of MIC and MBC respectively. The MIC of the creams was determined using the tube dilution method. Serial dilution of the creams was carried out in a well labeled test tubes using Mueller-Hinton broth as diluents. The isolates used in this study are Staphylococcus aureus and pseudomonad aeruginosa, as they are of major concern to the Standard Organization of Nigeria in terms of the microbial assessment of hair creams. Results for the sensitivity test showed that all hair creams under study possessed preservative capacity with DAM having the highest anti-microbial efficacy. All the cosmetics displayed adequate preservative capacity evidenced by ability to lower the inherent bio-burden to acceptable levels and to inhibit growth of the tested microorganisms, with DAM having the best anti-microbial activity. The tested cosmetics cannot have detrimental effect on health status of consumers as consequence of their unaltered stability profiles. Therefore, microbiological quality of cosmetics available in other parts of Nigerian market should be assessed and evaluated for consumer’s safety.
Keywords: Preservative capacity, cosmetics, microbial quality, anti-microbial quality, microorganisms.
Title: Microbiological quality and preservative capacity of commonly available cosmetics in Zaria metropolis Nigeria
Author: Omali I.C Paul, Stephen Eyije Abechi, Casimir Emmanuel Gimba, Odenigbo C. Clifford
International Journal of Life Sciences Research
ISSN 2348-3148 (online), ISSN 2348-313X (Print)
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