Characterization of Staphylococcus species isolated in production stages of brazilian colonial cheese

Colonial cheese is a culturally and economically important product from the south of Brazil. As most of its production is artisanal, the technology employed is mostly knowledge passed down from one generation to the next according to family tradition and may be produced with raw or pasteurized milk. It is noted for its spicy flavour and variable composition and is often classified as a medium to high-moisture cheese. This intrinsic feature increases the risk of microbial spoilage and food poisoning. One of the main bio-indicators of contamination in colonial cheese is coagulase positive Staphylococcus. The purpose of this study was the phenotypic identification of Staphylococcus species isolated from the products and surfaces in the main production stages of colonial cheese. Staphylococcus sp. isolates from the food and the production environment were obtained from two colonial cheese-production agro-industries in Rio Grande do Sul. Samples of fresh milk, curd, ripening and final colonial cheese were collected. In addition, surface sampling was performed on the coagulation tanks, production tables, molds, cheese ripening shelves and on the hands of the handlers. Staphylococcus sp. isolates in the cheese and the production environments tested in this study were identified by phenotypic techniques through biochemical and MALDI-TOF MS analyses. These isolates were subjected to gene expression analysis for enterotoxins A, B, C, D, and E. All isolates (72) were identified as Staphylococcus sp., and 43% of the total isolates tested were coagulase positive. Staphylococcus aureus was the predominant species in the raw milk and production tanks. Regarding coagulase negative staphylococci isolates, S. warneri and S. sciuri were most abundant. The sea and seb genes were detected in 4% of the Staphylococcus isolates. The results indicate eleven different species of Staphylococcus present in the colonial cheese production environments studied. The predominant presence of S. aureus in the different samples of milk, curd, ripened cheese, ready-to-eat cheese and hands of the handlers indicates that there are issues with the selection of milk-producing animals, pasteurization process and/or hygiene control of handlers. The sea and seb genes were detected in samples of raw milk and colonial cheese. No enterotoxin genes were detected in coagulase negative staphylococci.

Associação entre predição para lesão por pressão e marcadores bioquímicos / Association between pressure injury prediction and biochemical markers

Verificar a associação da predição de lesão por pressão com os níveis de albumina, hematócrito ehemoglobina. Métodos: estudo documental, desenvolvido em uma Unidade de Terapia Intensiva para Adultoscom prontuários de pacientes elegíveis (n=255). Foram extraídas variáveis de caracterização sociodemográficae clínica, desenvolvimento de lesão por pressão e região; escore da escala de Braden e resultados dosmarcadores bioquímicos. Fez-se análise estatística descritiva e inferencial, adotando-se nível de significânciade 5,0%. Resultados: houve prevalência do sexo masculino (64,7%) e de pacientes cirúrgicos (69,8%). Nãohouve associação estatística significativa entre os marcadores de hematócrito e hemoglobina com a prediçãode lesão por pressão, diferentemente dos níveis de albumina (p=0,023). Conclusão: há associação de prediçãode lesão por pressão no que se refere à albumina. O aporte proteico do paciente deve ser visto com maior rigorpela equipe de saúde.

Objective: to verify the association of pressure injury prediction with albumin, hematocrit and hemoglobin levels. Methods: documentary study, developed in an Intensive Care Unit for Adults with records of eligible patients (n=255). Sociodemographic and clinical characterizations lesion, development of pressure injury and region; a score of the Braden scale and results of biochemical markers were extracted. There was a descriptive and inferential statistical analysis, adopting a significance level of 5.0%. Results: there was a prevalence of males (64.7%) and surgical patients (69.8%). There was no significant association between hematocrit and hemoglobin markers with the pressure injury prediction, unlike albumin levels (p=0.023). Conclusion: there is an injury pressure prediction association in the albumin. The protein intake of the patient should be seen in greater detail by the health team.