This study was carried out to investigate the microbiological and physicochemical characteristics of  pharmaceutical raw materials used in some non-sterile preparations. A total of 16samples of pharmaceutical raw materials and 3 formulated non sterile preparations were subjected to microbial limit test, isolation and characterization of microbial  contaminants and physicochemical analysis.

The effects of flood on five genotypes of Cassava (Manihot esculenta), TMEB419, 011371, I98058I, I30574 and 91934 was investigated for a period of twenty (21) days. The plants were subjected to flooding two months after establishment. Results revealed that there are three homogenous groups for chlorophyll A and chlorophyll B. It was observed that the effect of flooding on chlorophyll content of the various genotypes is dependent on time. The longer the duration of flooding the less quantity of chlorophyll in the plant.