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Comparative Study Of Antibacterial Activity Of Two Selected Medicated Soap And One Local Black Soap On Staphylococcus Aureus From Wound Infection
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Cosmetic(creams) need not be sterile,however they must not be unduly contaminated with micro-organism and should remain in a stable state throughout the shelf life of the product (or when be used by the consumer).the aim of this project was to determine the microbial load in selected creams and to identify the specific contaminants.
For the determination of the number of contaminants, 1 mL of each cream was diluted to a factor of 104,1mL of this dilution was mixed with cool nutrient agar and macConkey agar and poured on the petri-dish and incubated at 370c for 24hours.the amount of micro-organism was determined to see if they conform to standard.
Colonies were picked and sub-cultured on slants of nutrient agar and macConkey agar
Purification of cultures was done (i.e isolation of pure culture) by picking each colony from the slant and growing it on freshly prepared nutrient agar and macConkey agar media to identify specific contaminants.the contaminants identified were both bacteria (staphylococcus spp and enterobacteriaceae) and fungi(moulds)
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CHAPTER ONE - [ Total Page(s): 6 ]VISIBLE EFFECTSVisible Growth: When
micro-organisms can actually be observed in or on a product then there
is obviously no doubt that microbial spoilage has occurred. In fact,
this is probably the most common way in which it is manifest. In liquid
formulations contaminants may be seen as a sediment, turbidity or a
pellicle while on more solid preparations colonies, often coloured, of
bacteria, yeasts or mould may form.Colour changesSometimes
visible spoilage is more striking, parti ... Continue reading---
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CHAPTER ONE - [ Total Page(s): 6 ]VISIBLE EFFECTSVisible Growth: When
micro-organisms can actually be observed in or on a product then there
is obviously no doubt that microbial spoilage has occurred. In fact,
this is probably the most common way in which it is manifest. In liquid
formulations contaminants may be seen as a sediment, turbidity or a
pellicle while on more solid preparations colonies, often coloured, of
bacteria, yeasts or mould may form.Colour changesSometimes
visible spoilage is more striking, parti ... Continue reading---
ABSRACT -- [Total Page(s) 1]
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ABSRACT -- [Total Page(s) 1]
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