C. B. Cereus About Your Health Lab Report

B. Cereus about Your Health

Emily Parkhurst
02/28/2013
Michael Wu
“I have complied with all rules if academic integrity while preparing this report.”
Results:
Bacteria Survival Rate after being emerged in Boiling Water

Amount of Bacteria Surviving
Time
E. Coli
S. Marcescens
B. Cereus
0 Seconds
++++
++++
++++
10 Seconds
+++
+++
+++
30 Seconds

++
45 Seconds

60 Seconds

+
300
Seconds

+
Table 1: ++++ = the highest amount surviving, + = the least amount surviving E. Coli survived the first ten seconds of emergence in boiling water. S. Marcescens survived the first ten seconds of emergence in boiling water. B. Cereus survived 10 seconds, 30 seconds, 60 seconds, and 300 seconds of emergence in boiling water.

Effectiveness of Antibacterial Products on S. Marcescens
Product Tested
Effectiveness
Lysol with Bleach
+++
Bactine
+
Hydrogen Peroxide
+++++
Neosporin
+
Purell

Germ-X
Marcescens was spread on an agar plate and then six different types of antimicrobial products were tested to see the effectiveness on the bacteria. The results were very different then the hypothesis. Purell and Germ-X had no effect on the S. Marcescens unlike hypothesized. These antibacterial had gels are sold in high amount all around the country. The experiments showed that if these products did kill 99.9% of bacteria, like they advertise, that the remaining 0.01% is a large amount. Bactine and Neosporin had very little effect on the bacteria. Another experiment that tested the effectiveness of Bactine and Neosporin on bacteria after reapplication of the products is suggested. The most highly effective antimicrobial product that was tested was hydrogen peroxide. There was a fairly large area around the hydrogen peroxide disk that did not contain any bacteria. Lysol with bleach was also effective on bacteria. There was an area around the Lysol with bleach disk that did not contain any