Examinando por Autor "Tenecela Valencia, Esthefany Michelle"
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- ÍtemSolo MetadatosAnálisis bacteriológico de leche cruda expendida en Tarqui-Ecuador(Universidad Católica de Cuenca., 2023) Tenecela Valencia, Esthefany Michelle; Ortiz Tejedor, Jonnathan Gerardo; 150282507Introduction: Raw milk, being a food source, is susceptible to microbial contamination during manual milking. However, it can contain bacteria such as Staphylococcus aureus, Total coliforms, and Escherichia coli, leading to various foodborne illnesses. Objective: To identify Staphylococcus aureus, Escherichia coli, and Total coliforms in raw milk samples sold in Tarqui, Ecuador, using Compact Drt X-SA and EC plates. Materials and Methods: A cross-sectional and observational descriptive study was conducted. The study universe comprised the raw milk samples sold in Tarqui, Ecuador. A non-probabilistic convenience sampling method was employed, obtaining 20 raw milksamples. Results: Among the raw milk samples, 50% exhibited coliforms in dilutions of 1:100 and 1:1000. Additionally, 15% of the analyzed samples tested positive for E. coli. S. aureus exceeded the established limits, with a presence of 70% in the 1:100 dilution and 25% inthe 1:1000 dilution. It is important to note that rejection limits may vary depending on the standards set by each country, as there is no standardized norm. Conclusion: In this study, the counts of S. aureus revealed high values, surpassing the rejection limits. On the other hand, E. coli registered 15% contamination, while coliform contamination ranged from 35% to 50% in raw milk. The interpretation of contaminationindicators should be based on the specific standards established by each country.