Saddleback Journal of Biology - Saddleback College
Saddleback Journal of Biology - Saddleback College
Saddleback Journal of Biology - Saddleback College
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Fall 2009 <strong>Biology</strong> 3B Paper<br />
Mean Colonies <strong>of</strong> E.Coli After Exposure<br />
200<br />
180<br />
160<br />
140<br />
120<br />
100<br />
80<br />
60<br />
40<br />
20<br />
0<br />
E. Coli H.W.B.<br />
E. Coli Irradiated<br />
y = 142.2e -0.032x<br />
R² = 0.9905<br />
y = 211.11e -0.104x<br />
R² = 0.965<br />
0 50 100<br />
Time (sec)<br />
FIGURE 1.Mean number <strong>of</strong> colonies relative to time in seconds exposed. Showing exponential trend lines for 100°C<br />
Hot Water Bath (H.W.B.) and Microwave Irradiation at 2,450MHz (M.I.)<br />
160<br />
mean colonies <strong>of</strong> E. coli produced after<br />
exposure<br />
140<br />
120<br />
100<br />
80<br />
60<br />
40<br />
20<br />
0<br />
Control 30s HWB 60s HWB 30s MI 60s MI<br />
interval and exposure type<br />
FIGURE 2.Bar graph <strong>of</strong> mean colonies <strong>of</strong> E. coli produced after exposures followed by 96 hour incubation at 37°C.<br />
Error bars are mean±SEM. HWB=Hot Water Bath at 100°C, MI= Microwave Irradiated at 2,450MHz. No<br />
significant difference p=0.0125.<br />
146<br />
<strong>Saddleback</strong> <strong>Journal</strong> <strong>of</strong> <strong>Biology</strong><br />
Spring 2010
Change language