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Bacillus cereus impact in dairy supply chain: gene expression related to gastroenteric toxins, spoilage enzymes during the shelf-life of pasteurized milk and determination of disinfectants efficacy on biofilms

Grant number: 15/20874-0
Support type:Regular Research Grants
Duration: June 01, 2016 - May 31, 2018
Field of knowledge:Agronomical Sciences - Veterinary Medicine
Principal Investigator:Ana Maria Centola Vidal
Grantee:Ana Maria Centola Vidal
Home Institution: Faculdade de Zootecnia e Engenharia de Alimentos (FZEA). Universidade de São Paulo (USP). Pirassununga , SP, Brazil
Assoc. 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)

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
SILVA, HIGOR OLIVEIRA; SANTOS LIMA, JOYCE APARECIDA; GAMERO AGUILAR, CARLOS EDUARDO; MARQUES ROSSI, GABRIEL AUGUSTO; MATHIAS, LUIS ANTONIO; CENTOLA VIDAL, ANA MARIA. Efficiency of Different Disinfectants on Bacillus cereus Sensu Stricto Biofilms on Stainless-Steel Surfaces in Contact With Milk. FRONTIERS IN MICROBIOLOGY, v. 9, NOV 28 2018. Web of Science Citations: 0.
MARQUES ROSSI, GABRIEL AUGUSTO; SILVA, HIGOR OLIVEIRA; GAMERO AGUILAR, CARLOS EDUARDO; ROCHETTI, ARINA LAZARO; PASCOE, BEN; MERIC, GUILLAUME; MOURKAS, EVANGELOS; HITCHINGS, MATTHEW D.; MATHIAS, LUIS ANTONIO; DE AZEVEDO RUIZ, VERA LETTICIE; FUKUMASU, HEIDGE; SHEPPARD, SAMUEL K.; CENTOLA VIDAL, ANA MARIA. Comparative genomic survey of Bacillus cereus sensu stricto isolates from the dairy production chain in Brazil. FEMS Microbiology Letters, v. 365, n. 3 FEB 2018. Web of Science Citations: 2.
GABRIEL AUGUSTO MARQUES ROSSI; CARLOS EDUARDO GAMERO AGUILAR; HIGOR OLIVEIRA SILVA; ANA MARIA CENTOLA VIDAL. Bacillus cereus group: genetic aspects related to food safety and dairy processing. Arq. Inst. Biol., v. 85, p. -, 2018.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.
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