Part A: Effect of salt on growth
In the table below, you should record the growth on the salt plates. Use the following designations to record the growth:
- = no growth
+ = minimum growth
++ = moderate growth
+++ = heavy growth
++++ = very heavy (maximum) growth
In recording the results, you will look at all of the plates for comparisons.
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Media |
E. coli (EC) |
Alcaligenes faecalis (AF) |
Serratia marcescens (SM) |
S. aureus (SA) |
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1% NaCl |
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5% NaCl |
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10% NaCl |
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15% NaCl |
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Part B: Effect of temperature on growth
In the table below, you should record the growth from the temperature experiment. Use the following designations to record the growth:
- = no growth
+ = minimum growth
++ = moderate growth
+++ = heavy growth
++++ = very heavy (maximum) growth
In recording the results, you will look at all of the plates for comparisons.
63 degrees C
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Organism |
0 |
15 sec |
2 min |
5 min |
15 min |
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BS |
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SA |
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EC |
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72 degrees C
|
Organism |
0 |
15 sec |
2 min |
5 min |
15 min |
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BS |
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SA |
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EC |
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