Original Articles
Vol 4, No 3 (2015)
https://doi.org/10.4081/ijfs.2015.4578

Prevalence of L. monocytogenes in environmental samples collected in dairy plants of Sassari Province, Italy

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Received: 16 July 2014
Published: 30 September 2015
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Listeria monocytogenes, Dairy plant, Environmental samples, Ricotta cheese

Authors

Giovanni Terrosu
giovanni.terrosu@izs-sardegna.it
Food Hygiene Unit, Laboratory of Milk Microbiology, Institute for Experimental Veterinary Medicine of Sardinia, Sassari, Italy.
Antonio Fadda
Livestock and Animal Husbandry Hygiene Service, Local Health Unit n.1, Sassari, Italy.
Giorgio Frongia
Livestock and Animal Husbandry Hygiene Service, Local Health Unit n.1, Sassari, Italy.
Antonietta Sanna
Livestock and Animal Husbandry Hygiene Service, Local Health Unit n.1, Sassari, Italy.
Rita Melillo
Food Hygiene Unit, Laboratory of Milk Microbiology, Institute for Experimental Veterinary Medicine of Sardinia, Sassari, Italy.
Antonio Fadda
Food Hygiene Unit, Laboratory of Milk Microbiology, Institute for Experimental Veterinary Medicine of Sardinia, Sassari, Italy.
Listeria (L.) monocytogenes is frequently isolated from food production environment and often persists in dairy plants despite vigorous sanitation regimes. In recent years several alert notifications were sent to Rapid Alert System for Food Products system as a consequence of Listeria monocytogenes contamination of ricotta cheese. After the alert of 2012, competent authority (Local Health Unit of Sassari Province) organised an environmental monitoring plan with the partnership of the Institute for Experimental Veterinary Medicine of Sardinia to verify analysis of dairy plants own-check according to Regulation (EC) N° 2073/05 and further modifications. In 2014 n. 665 processing areas samples of n. 50 dairy plants of Sassari Province were examined. UNI EN ISO 11290-1:2005 for detection of L. monocytogenes was used. Non-compliance in n. 5 diary plants are observed (n. 8 positive samples). Post-non-compliance environmental sanitisation was efficient and own-check plans included appropriate corrective actions.

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1.
Prevalence of L. monocytogenes in environmental samples collected in dairy plants of Sassari Province, Italy. Ital J Food Safety [Internet]. 2015 Sep. 30 [cited 2026 Aug. 19];4(3). Available from: https://www.pagepressjournals.org/ijfs/article/view/ijfs.2015.4578

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