Volume 22, Number 7—July 2016
Research
Restaurant Cooking Trends and Increased Risk for Campylobacter Infection
Anna K. Jones, Dan Rigby1, Michael Burton, Caroline Millman, Nicola J. Williams, Trevor R. Jones, Paul Wigley, Sarah J. O’Brien
, Paul Cross1, and for the ENIGMA Consortium
, Paul Cross1, and for the ENIGMA Consortium
Table
Campylobacter survival in cooked chicken liver, by replicate*
| Variable | Cooking time, min |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 1.5 | 2 | 2.5 | 3 | 3.5 | 4 | 5 | 6 | 7 | |
| Replicate 1 | ||||||||||
| No. positive | 4.0 | 3.0 | 3.0 | 3.0 | 4.0 | 3.0 | 2.0 | 3.0 | ND | ND |
| Mean weight, g | 41.5 | 41.5 | 43.8 | 41.5 | 41.5 | 41.5 | 40.3 | 40.8 | ND | ND |
| Mean core temp, °C |
36.0 |
46.0 |
44.0 |
41.0 |
47.5 |
55.5 |
60.5 |
61.5 |
ND |
ND |
| Replicate 2 | ||||||||||
| No. positive | ND | 3.0 | 3.0 | 4.0 | 3.0 | 3.0 | 3.0 | 3.0 | 0 | ND |
| Mean weight, g | ND | 34.0 | 34.0 | 34.0 | 34.3 | 34.0 | 34.3 | 34.5 | 34.3 | ND |
| Mean core temp, °C |
ND |
39.0 |
42.5 |
44.0 |
50.5 |
59.0 |
65.5 |
65.0 |
72.0 |
ND |
| Replicate 3 | ||||||||||
| No. positive | ND | ND | 2.0 | 4.0 | 4.0 | 4.0 | 3.0 | 3.0 | 1.0 | 1.0 |
| Mean weight, g | ND | ND | 40.0 | 40.3 | 39.3 | 40.5 | 40.5 | 40.3 | 39.5 | 39.0 |
| Mean core temp, °C |
ND |
ND |
41.5 |
55.5 |
57.5 |
61.0 |
69.0 |
64.0 |
69.0 |
72.5 |
| Replicate 4 | ||||||||||
| No. positive | ND | ND | 4.0 | 2.0 | 1.0 | 0.0 | 1.0 | 1.0 | 0 | 0 |
| Mean weight, g | ND | ND | 25.8 | 26.3 | 28.0 | 26.5 | 27.3 | 24.8 | 27.8 | 29.5 |
| Mean core temp, °C |
ND |
ND |
56.0 |
58.5 |
63.5 |
67.5 |
61.0 |
71.5 |
75.0 |
69.5 |
| No. livers | 4 | 8 | 16 | 16 | 16 | 16 | 16 | 16 | 12 | 8 |
| No. positive | 4 | 6 | 12 | 13 | 12 | 10 | 9 | 10 | 1 | 1 |
| Mean no. positive per batch of 4 | 4.0 | 3.0 | 3.0 | 3.3 | 3.0 | 2.5 | 2.3 | 2.5 | 0.3 | 0.5 |
| Overall mean % of positives | 100 | 75.0 | 75.0 | 81.3 | 75.0 | 62.5 | 56.3 | 62.5 | 8.3 | 12.5 |
| Overall mean liver weigh, g | 41.5 | 37.8 | 35.9 | 35.5 | 35.8 | 35.6 | 35.6 | 35.1 | 33.8 | 34.3 |
| Overall mean core temperature, °C | 36.0 | 42.5 | 46.0 | 49.8 | 54.8 | 60.8 | 64.0 | 65.5 | 72.0 | 71.0 |
*ND, not detected.
1These senior authors contributed equally to this article.
Page created: June 14, 2016
Page updated: June 14, 2016
Page reviewed: June 14, 2016
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