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SPME/GC-MS characterization of the volatile fraction of an Italian PDO sheep cheese to prevalent lypolitic ripening: the case of Fiore Sardo

Urgeghe, Pietro Paolo and Piga, Carlo and Addis, Margherita and Di Salvo, Riccardo and Piredda, Giovanni and Scintu, Maria Francesca and Wolf, Irma Veronica and Sanna, Gavino (2012) SPME/GC-MS characterization of the volatile fraction of an Italian PDO sheep cheese to prevalent lypolitic ripening: the case of Fiore Sardo. Food Analytical Methods, Vol. 5 (4), p. 723-730. eISSN 1936-976X. Article.

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DOI: 10.1007/s12161-011-9302-5

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Abstract

A specifically aimed SPME/GC-MS method has been assessed in order to describe the volatile fraction of intense flavoring cheeses like Fiore Sardo PDO, a prevalent lipolytic ripening sheep cheese from Sardinia, Italy. A DVB/ CAR/PDMS 50/30 μm fiber and a 3-min exposure time showed to be the best compromise between the possibility to extract compounds with a wide range of polarity and molecular mass and the need to avoid competition and displacement effects among analytes. The volatile compound profile of Fiore Sardo PDO sheep cheese was largely characterized by carboxylic acids (about 68% of the total area of recognized peaks), whereas esters (14%), ketones (9%), and alcohols (8%) represented other abundant classes of low molecular weight species. A number of low-smelling thres- hold trace compounds were also identified as likely contributors of aroma of the Fiore Sardo PDO cheese.

Item Type:Article
ID Code:7968
Status:Published
Refereed:Yes
Uncontrolled Keywords:Fiore Sardo PDO, sheep cheese, lipolytic ripening, SPME/GC-MS
Subjects:Area 03 - Scienze chimiche > CHIM/01 Chimica analitica
Area 07 - Scienze agrarie e veterinarie > AGR/15 Scienze e tecnologie alimentari
Divisions:001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Agraria
001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Chimica e Farmacia
Publisher:Springer
eISSN:1936-976X
Deposited On:19 Sep 2012 15:46

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