2nd Results of Dilution of the Plain Yogurts!!
June 18
Our goal is to dilute three times and average them. So, after the 1st successful dilution of the plain yogurts, I repeated the same procedures but with different dilution factors for the brands I could not count in the previous experiment.
Procedure:
**
- Dannon: dilute up to 104
- Stonyfield: dilute up to102x
- Siggi's: dilute up to 106x
- Chobani: dilute up to 106x
**
- Dannon: plate 103x and 104x
- Stonyfield: plate 102x
- Siggi's: plate 106x
- Chobani: plate 105x and 106x
Results:
Dannon:
Had nothing
CFU's = [13 x 102] / 0.1mL = 1.30 x 104
CFU's = [17.3 x 106] / 0.1mL = 1.73 x 108
Chobani:
- 106x:
CFU's = [19.73 x 106] / 0.1mL = 1.97 x 108
Our goal is to dilute three times and average them. So, after the 1st successful dilution of the plain yogurts, I repeated the same procedures but with different dilution factors for the brands I could not count in the previous experiment.
Procedure:
**
- Dannon: dilute up to 104
- Stonyfield: dilute up to102x
- Siggi's: dilute up to 106x
- Chobani: dilute up to 106x
**
- Dannon: plate 103x and 104x
- Stonyfield: plate 102x
- Siggi's: plate 106x
- Chobani: plate 105x and 106x
Results:
Dannon:
Had nothing
Stonyfield:
- 102x:
- 102x:
A
|
12
|
B
|
16
|
C
|
11
|
Average
|
13
|
Siggi's:
- 106x:
- 106x:
A
|
15
|
B
|
15
|
C
|
22
|
Average
|
17.3
|
Chobani:
- 106x:
A
|
21
|
B
|
22
|
C
|
16
|
Average
|
19.7
|
 |
| The count of Stonyfild plain yogurt |
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