Safety of Chinese roast pork as determined by the water activity of the skin and cavity
Bibliographic record
Abstract

 Objectives: The increase in unfamiliar ethnic foods and the lack of guidelines available to evaluate their safety makes it increasingly challenging for Public Health Inspectors (PHIs) to ensure food safety. Chinese barbecued meats, for example, frequently undergo improper temperature control, causing health concerns for public health authorities. However, due to the limited studies conducted, the health implications associated with temperature abuse of this ethnic food is currently unclear. Hence, the following study assessed the safety of Chinese barbecued meats, specifically roast pork, at ambient temperature (21°C). Methods: The temperature and water activity (aw) of 30 samples of roast pork skin and cavity were measured. A one sample t-test was conducted to assess whether or not the aw of roast pork surfaces are below 0.85, a standard for safe display of food at room temperature. In addition, the paired-sample t-test was conducted to determine whether a difference exists between the aw of roast pork skin and cavity. Results: The mean temperature that roast pork was displayed at in retailers was 30.7°C and the mean skin and cavity aw were 0.70±0.013 and 0.81±0.009, respectively. The aw of the roast pork skin and cavity were found to be statistically lower than the standard, 0.85 (p-value < 0.00001 and at 0.001338, respectively). In addition, statistically significant difference was found between the mean aw of the roast pork skin and cavity (p-value < 0.00001). Conclusion: These results indicate that the whole roast pork can be safely displayed at ambient temperature provided that it adheres to specific food safety and sanitation criteria. These results can aid health authorities with guidelines development to assist PHIs with inspections and educate operators to ensure food safety.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.002 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".