Improved method for virological analysis of food

Area of Science:

• Food safety and public health
• Virology
• Environmental microbiology

Background:

• Enteroviruses pose a significant risk to public health and can contaminate various food products.
• Accurate detection of enteroviruses in food is crucial for effective food safety monitoring.
• Existing methods for enterovirus recovery from food can be complex and variable.

Purpose of the Study:

• To improve a single, simple method for recovering enteroviruses from diverse food matrices.
• To investigate the influence of sample contamination techniques and food properties on virus recovery.
• To establish an efficient and reliable protocol for enterovirus detection in food.

Main Methods:

• Studied sample contamination techniques, focusing on virus adsorption at different food pH levels.
• Evaluated virus recovery efficiency across various food types including ground beef, fish, oysters, and mussels.
• Developed a method involving sample submersion in alkaline (pH 9) demineralized water with specific salinity, followed by ultrafiltration or ultracentrifugation for virus concentration.

Main Results:

• Virus adsorption is pH-dependent and influenced by food type and food-virus surface interactions.
• The improved method demonstrated high efficiency in recovering enteroviruses from ground beef, fish, oysters, and mussels.
• Effective virus recovery was achieved even when initial food contamination levels were very low.

Conclusions:

• The enhanced method provides a robust and simple approach for enterovirus recovery from a range of food products.
• This protocol can significantly aid in the routine monitoring of enterovirus contamination in the food supply.
• The findings contribute to improved food safety strategies by enabling more sensitive detection of viral pathogens.