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Title of article :
Effect of temperature and sunlight on the stability of human adenoviruses and MS2 as fecal contaminants on fresh produce surfaces
Author/Authors :
Carratalà، نويسنده , , Anna and Rodriguez-Manzano، نويسنده , , Jesْs and Hundesa، نويسنده , , Ayalkibet and Rusiٌol، نويسنده , , Marta and Fresno، نويسنده , , Sandra L. Cook، نويسنده , , Nigel and Girones، نويسنده , , Rosina، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2013
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Abstract :
Determining the stability, or persistence in an infectious state, of foodborne viral pathogens attached to surfaces of soft fruits and salad vegetables is essential to underpin risk assessment studies in food safety. Here, we evaluate the effect of temperature and sunlight on the stability of infectious human adenoviruses type 2 and MS2 bacteriophages on lettuce and strawberry surfaces as representative fresh products. Human adenoviruses have been selected because of their double role as viral pathogens and viral indicators of human fecal contamination. Stability assays were performed with artificially contaminated fresh samples kept in the dark or under sunlight exposure at 4 and 30 °C over 24 h. The results indicate that temperature is the major factor affecting HAdV stability in fresh produce surfaces, effecting decay between 3 and 4 log after 24 h at 30 °C. The inactivation times to achieve a reduction between 1 and 4-log are calculated for each experimental condition. This work provides useful information to be considered for improving food safety regarding the transmission of foodborne viruses through supply chains.
Keywords :
MS2 , stability , Temperature , Sunlight , Vegetables , Human adenoviruses
Journal title :
International Journal of Food Microbiology
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