| Grant number: | 15/20874-0 |
| Support Opportunities: | Regular Research Grants |
| Start date: | June 01, 2016 |
| End date: | May 31, 2018 |
| Field of knowledge: | Agronomical Sciences - Veterinary Medicine - Preventive Veterinary Medicine |
| Principal Investigator: | Ana Maria Centola Vidal |
| Grantee: | Ana Maria Centola Vidal |
| Host Institution: | Faculdade de Zootecnia e Engenharia de Alimentos (FZEA). Universidade de São Paulo (USP). Pirassununga , SP, Brazil |
| Associated researchers: | Heidge Fukumasu ; Vera Letticie de Azevedo Ruiz |
Abstract
Bacillus cereus is an important bacterium related to the milk supply chain in Brazil and in other countries, because it causes technological spoilage to dairy industries due the production of proteases and lipases, and also it can be a risk to public health due the production of toxins that can cause diarrhea and emesis. This bacterium also is able to survive to various heat treatments applied during milk processing and also can form biofilms on equipment and utensils. The genes involved in biofilm formation and production of the different toxins and proteases synthesized by this bacterium are described in the literature, but no studies were found evaluating the influence of the milk processing in the expression of the related genes. In this context, this study focused on to determine whether the pasteurization of milk influences the expression of genes related to the production of proteases and emetic and diarrheal toxins by B. cereus in previously contaminated milk and verify the effectiveness of sanitizers in relation to avoid the formation of biofilms. (AU)
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