alexa Microbial Evaluation Of Geophagic And Cosmetic Clays From Southern And Western Nigeria: Potential Natural Nanomaterials
ISSN: 2157-7439

Journal of Nanomedicine & Nanotechnology
Open Access

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3rd International Conference on Nanotek & Expo
December 02-04, 2013 Hampton Inn Tropicana, Las Vegas, NV, USA

Mary A. Bisi-Johnson, Oyelade Hamzart, Adediran Kehinde and Akinola Saheed
Accepted Abstracts: J Nanomed Nanotechnol
DOI: 10.4172/2157-7439.S1.015
Abstract
Geophagic and cosmetic clays are among potential nanomaterial which occur naturally and are of various forms. The use of these nanoclays is a common practice in both rural and urban areas mostly due to tradition and medicinal reasons. These naturally occurring materials can be valuable sources of nanomaterial by serving as nanocomposites. The need to ascertain the safety of these materials is the motivation for this research. Physical characterization based on the hue value and microbiological qualities of the nanoclays were carried out. The microbial analysis of the clay samples showed considerable contamination with both bacteria and fungi with fungal contaminants taking the lead. This observation may not be unlikely due to the ability of fungi species to survive harsher growth conditions than bacteria. ?Atike pupa? showed no bacterial growth. The clay with the largest bacterial count was Calabash chalk (Igbanke), while that with the highest fungal count was ?Eko grey?. The most commonly isolated bacteria in this study were Clostridium spp and Corynebacterium spp. while fungi included Aspergillus spp. These results are an indication of the need to subject these clay materials to treatments such as heating before consumption or topical usage thereby ascertaining their safety
Biography
Mary A. Bisi-Johnson has obtained B.Sc. (Honours) and master?s degree in Microbiology. She completed a Ph.D. in Medical Microbiology from Walter Sisulu University, South Africa. She is an experienced academia of over 10 years. She is currently a lecturer at Obafemi Awolowo University, Ile-Ife Nigeria and her area of specialization is environmental health, public health, antimicrobial resistance, natural drug screening and molecular biology. She has been a recipient of several awards and merit-based scholarships. She has to her credit more than 12 peer-reviewed articles in accredited journals and several conference presentations. She is a member of various prestigious professional bodies
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