Microbiological evaluation of Vietnamese Pho ingredients in Toronto
Notice bibliographique
Résumé
Introduction: Beef and bean sprouts have often been implicated in foodborne illness (FBI) outbreaks. The traditional Vietnamese dish, Pho, uses both as its main ingredients and, therefore, presents significant concerns from a food safety perspective. The present study investigated food safety concerns associated with Pho through the detection of total coliform and Escherichia coli. Methods: Thirty-two Vietnamese restaurants in Toronto, Ontario, Canada, were selected for the study based on inclusion criteria. All restaurant operators were briefed prior to sampling and were informed that their consent and participation were voluntary. Fourteen restaurants consented to providing samples and allowing their broth temperatures to be taken. Three types of samples were obtained from each location: raw beef (RB), cooked beef (CB), and bean sprouts (BS). All samples were couriered to an accredited laboratory for microbiological analysis via 3M petrifilm E. coli/coliform count plates. Based on reported total coliform count (TCC), locations were segmented into low, medium, and high contamination categories. Subsequent correlational analysis were conducted based on lab detection data to identify potential links between E. coli count (ECC) and TCC, TCC and broth temperature, and ECC and broth temperature. In addition, an ANOVA was performed to examine for differences in TCC by sample types, differences in TCC by suppliers, differences in ECC by sample types, differences in ECC by suppliers, and differences in TCC by location types. Results: ANOVA indicated a significant effect of sample type on TCC for all three different sample types, with post hoc comparisons elucidating significantly lower TCC in CB and RB samples, compared with BS samples. Subsequent analysis further indicated the significant effect of location category on TCC, with post hoc comparisons demonstrating significantly higher TCC in Category 3 locations compared to Category 1 and 2 locations. All other analysis yielded nonstatistically significant results. Conclusion: This study presented significant findings in linking Pho ingredients to potential food safety concerns. Specifically, temperature control was identified as a possible cause for high TCC and E. coli detection at select restaurants. Although analysis involving E. coli did not yield any significant results, any E. coli found on ready-to-eat food at a restaurant is problematic from a food safety perspective. Based on the results, we recommended policy changes to incentivize restaurants to maintain high hygienic standards and improve efficiency of the public health inspection process.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,001 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,005 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».