Vibrio vulnificus counts (MPN/g)a

 

 

Experiment

Date

Pre-depuration

Post-depuration Control tank

Post-depuration Test tank

Temperature (°C)b

Salinity (ppt)c

1- Inoculated oysters

02/19/2009

>1.1X105

75

43

18.0±1.7

25.0±2.8

2- Inoculated oysters

02/26/2009

>1.1X105

23

20

15.0±1.1

27.0±1.7

3- Standard

06/19/2009

1.4X103

9.3X102

2.4X103

28.3±1.7

24.3±2.3

4- Low Temp. 15°C

08/08/2009

2.9X104

7.5X103

9.3X103

25.0±2.1

26.5±3.2

5- Flow rate 46 L/min

09/01/2009

>1.1X105

2.1X104

2.9X104

28.5±0.6

26.0±3.4

6- Flow rate 68 L/min

09/14/2009

1.1X105

3

3

27.5±1.7

32.2±1.2

7- Flow rate 68 L/min

10/12/2009

4.6X104

1.1X105

>1.1X105

25.6±3.1

9.0±2.4

aVibrio vulnificus counts were determined according to Most Probable Number (MPN) method described in the U.S. Food and Drug Administration’s Bacteriological Analytical Manual (BAM) [5]
bAverage seawater temperature recorded in both tanks throughout the depuration process
cAverage seawater salinity recorded in both tanks throughout the depuration process
Table 1: Summary of depuration trials.
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