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Caratterizzazione di batteri lattici di un formaggio tradizionale a pasta filata = Characterization of lactic acid bacteria isolated from a traditional pasta filata cheese

Scarano, Christian and Comunian, Roberta and Assaretti, Anna Rita and Paba, Antonio and Daga, Elisabetta Simona and Cossu, Francesca and Virdis, S. and Spano, V. and Campus, G. and De Santis, Enrico Pietro Luigi (2010) Caratterizzazione di batteri lattici di un formaggio tradizionale a pasta filata = Characterization of lactic acid bacteria isolated from a traditional pasta filata cheese. Italian Journal of Food Safety = Rivista dell'Associazione Italiana dei Veterinari Igienisti, Vol. 8 , p. 55-58. ISSN 2239-7132. Article.

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Abstract

In this paper are reported the results of the characterization of the lactic acid microflora isolated from Sardinian provoletta, a traditional pasta filata cheese obtained from cow’s milk. Cheese samples from two batches were taken in triplicate from three dairy plants after 7 and 21 days of ripening. Each sample was analyzed for mesophilic and thermophilic lactic acid bacteria (LAB). From plates, 118 isolates were identified by Rep-PCR GTG5, species-specific PCR and DNA sequencing. The identified LAB belonged to 7 different species: Lb. paracasei, Lb. rhamnosus, Lb. delbrueckii, Lb. fermentum, E. faecalis, E. faecium e Lc. Lactis. Enterococci were the most common isolates, they were recovered from all the dairy plants and from all the products analysed at 7 and at 20 days of ripening. Although with some differences within the various producers, the technology used aids mesophilic LAB growth, guaranteeing a large biodiversity protection.

Item Type:Article
ID Code:7309
Status:Published
Refereed:Yes
Uncontrolled Keywords:Lactic acid bacteria, traditional cheesemaking process, food safety
Subjects:Area 07 - Scienze agrarie e veterinarie > VET/04 Ispezione degli alimenti di origine animale
Divisions:001 Università di Sassari > 01 Dipartimenti > Biologia animale
002 Altri enti e centri di ricerca del Nord Sardegna > AGRIS Sardegna, Olmedo > Dipartimento per la ricerca nelle produzioni animali
Publisher:AIVI
ISSN:2239-7132
Deposited On:02 Apr 2012 13:00

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