Biofilms in small scall dairy industry | ||
| Suez Canal Veterinary Medical Journal. SCVMJ | ||
| Articles in Press, Accepted Manuscript, Available Online from 26 May 2024 | ||
| Document Type: Original Article | ||
| DOI: 10.21608/scvmj.2024.281816.1166 | ||
| Authors | ||
| Mira Muhssen El-Hadidi* 1; Ahmed Hassan Saad2; Omar Refaat El-kosi3; Ehab Mohammed Salama4 | ||
| 1Department of Food Hygiene and Control - Faculty of Veterinary Medicine. Suez Canal University. | ||
| 2Professor of Milk hygiene. Department of Food Hygiene and Control - Faculty of Veterinary Medicine. Suez Canal University. | ||
| 3Head of the Department of Food control and hygiene, Faculty of Veterinary Medicine, Suez Canal University, Ismailia | ||
| 4Department of Food Hygiene and Control, Faculty of Veterinary Medicine, Suez Canal University, Egypt | ||
| Abstract | ||
| Bacterial biofilm has been incriminated as a major source of milk and dairy products contamination causing food poisoning with economic losses, therefore this study aimed to determine the possibility of cross-contamination of microorganisms from biofilms formed on surfaces of manufacture equipment and utensils to the final dairy products as yoghurt and rice with milk pudding. Through detection of Staphylococcus aureus, Streptococcus spp., Escherichia coli and Proteus spp. by bacteriological examination of 90 swabs collected from biofilms on the surfaces of the dairy products manufacture equipment and utensils in small dairy shops from different localities at Port-said Governorate, Egypt, in addition to 45 of each commercial small-scale yoghurt and rice with milk pudding samples collected from the same small dairy shops. The results showed that the incidence of Staphylococcus aureus was 53.3%, 62.2% and 73.3%, in swabs, yoghurt samples, and rice with milk pudding samples, respectively, and the incidence of Streptococcus spp. were 73.3%, 68.9 % and 71.1%, in biofilm swabs, yoghurt samples, and rice with milk pudding samples, respectively. While the incidence of Escherichia coli was 3.3% and 4.4%, in biofilm swabs and yoghurt samples, with absence of Escherichia coli in rice with milk pudding samples. Proteus spp. couldn’t be detected in all examined samples. we can conclude that the presence of biofilms and high incidence of isolated microorganisms, despite of regular cleaning reflects ineffectiveness of cleaning process and cleaning agent used for biofilm control in small dairy shops and the presence of the same microorganisms in the final dairy products may confirm cross-contamination from biofilms on the surfaces of the manufacture equipment and utensils to the final dairy products of small dairy shops. | ||
| Keywords | ||
| Biofilm; Staphylococcus; Streptococcus; Escherichia coli; Proteus spp | ||
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