Investigating the antibacterial properties of a mouthwash

Good Essay esp. for an investigation Good Intro to investigation Investigating the antibacterial properties of a mouthwash Introduction The mouthwash under test id Asda Protect. It contains:- · aqua · alcohol · glycerin · polysorbate 20 · sodium benzoate · aroma · sodium saccharin · cetylpyridinium chloride · menthol · sodium flouride (0.05%) In this investigation we aim to test the antibacterial properties of this mouthwash treating it like a disinfectant against three common bacteria which can be safely used in the laboratory: Escherichia coli, Baccilus …

…in commensals and pathogens of man and other animals. In order to see how effective the mouthash is against the different bacteria, we will test how different concentrations of the mouthwash will combat a lawn of each bacteria. Techniques that will be put into pracice are:- · Melting and pouring agar · Creating a lawn of bacteria · Dilutions · Measuring rings of inhibition Hypothesis: The higher the concentration of the mouthwash, the larger the rings of inhibition.