Clarifying the Dual Role of Staphylococcus spp. in Cheese Production

Area of Science:

• Food microbiology
• Bacterial pathogenesis
• Dairy science

Background:

• Staphylococcus species exhibit diverse roles in cheese production, encompassing both beneficial contributions and pathogenic risks.
• Coagulase-positive staphylococci (CoPS), especially Staphylococcus aureus, are implicated in foodborne outbreaks due to enterotoxin production.
• Antibiotic resistance, including MRSA, and biofilm formation are significant concerns associated with pathogenic staphylococci.

Purpose of the Study:

• To review the dual role of Staphylococcus species in cheese production, detailing risks and benefits.
• To discuss the prevalence, virulence factors, and control of pathogenic staphylococci in cheese.
• To highlight the importance of understanding Staphylococcus gene expression during cheese production for effective intervention.

Main Methods:

• Literature review of existing studies on Staphylococcus in cheese.
• Compilation and discussion of knowledge on coagulase-positive staphylococci (CoPS) and coagulase-negative staphylococci (CoNS).
• Analysis of factors influencing enterotoxin gene expression and control measures.

Main Results:

• Coagulase-negative staphylococci (CoNS) contribute positively to cheese ripening, flavor, and texture.
• Coagulase-positive staphylococci (CoPS), particularly S. aureus, pose risks due to enterotoxin production and antibiotic resistance.
• Environmental factors and quorum sensing regulate enterotoxin gene expression.

Conclusions:

• Effective control of pathogenic staphylococci in cheese requires adherence to food safety standards, GMP, and proper environmental control.
• Understanding the complex interactions of Staphylococcus species in cheese is vital for ensuring food safety and quality.
• Further research into Staphylococcus gene expression can inform strategies to mitigate risks in cheese production.