Homemade Disinfectants Experiment

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The purpose of this experiment is to find out the best combination of homemade disinfectants so as to effectively kill bacteria from raw meat and enable safe food preparation. Our hypothesis is that the hydrogen peroxide and vinegar combination would have the least bacteria growth on both wood and plastic cutting boards. In our experiment, we collected data on the amount of bacterial growth for 5 combinations of homemade disinfectants, on two types of cutting boards, wooden and plastic. The combinations include vinegar as a control, vinegar and hydrogen peroxide, vinegar and lemon concentrate, vinegar and salt concentrations of 15g, Vinegar and salt concentrations of 25g. These combinations are made of different ingredients with vinegar as a base that have shown high inhabitation rates of Bacteria.…show more content…
Colonies of bigger diameter as shown in Vinegar + Salt Concentration (15g / 100ml) on plastic cutting board and vinegar + hydrogen Peroxide were accounted for by the number of smaller bacteria colonies observed inside, and not counting colonies of bigger diameter as one bacteria colony itself to ensure a fair experiment. Referring to Table 1, you can see that we had decided to void the data from the 3rd trial of the control, Vinegar. This is because its results have shown a great anomaly from the first two trials; and approximate 90% increase in the number of bacteria colonies observed. This discrepancy could be due to a deceased amount of vinegar applied onto the surface. Due to time constraint, we are unable to conduct another experiment and we’ve decided not to take the results from the 3rd trial into account so as to ensure a fair

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