Table 2. Number of viable colonies after a different length of UV exposure.
|
Irradiation period (min) |
PAa MZ4A |
PA MZ2F |
||
|
Colony count |
Survival rate (%)b |
Colony count |
Survival rate (%) |
|
|
0 |
3.36 x 103 |
100 |
4.26 x 103 |
100 |
|
5 |
33 |
0.98 |
72 |
1.69 |
|
10 |
28 |
0.83 |
66 |
1.54 |
|
15 |
19 |
0.56 |
60 |
1.41 |
|
20 |
12 |
0.35 |
41 |
0.96 |
|
25 |
7 |
0.21 |
23 |
0.54 |
|
30 |
2 |
0.06 |
9 |
0.21 |
|
35 |
0 |
0 |
0 |
0 |
|
45 |
0 |
0 |
0 |
0 |
aPA stands for Pseudomonas aeruginosa; bSurvival rate (%) = (Number of colonies after UV exposure/Number of colonies germinated at normal condition) x 100.