title: Electronic Nose analysis of milk from cows grazing on two different Alpine vegetation types.
abstract: The nutritional distinctiveness of pasture-fed dairy products is mainly influenced by the transfer of specific chemical compounds from the grass to the milk and by their effect on rumen microflora and animal metabolism. Thus, the pasture-fed origin has to be objectively proven, using fast and reproducible analytical methods applied to finished products, in order to protect consumers against potential frauds. In this work, Electronic Nose patterns of Alpine milks produced by cows grazing Trifolium alpinum and Festuca nigrescens pasture types have been examined, in order to test the potential use of this device for routine control analyses of the botanical origin of milk and dairy products. The data have been treated with different multivariate analyses (MANOVA, LDA) and chemometrics (MPLS). The results allow a very good classification of the milks, according to the two treatments. Such results demonstrate that this device could be successfully applied to PDO dairy products food chain as a tool for the determination of their dietary origin.
authors.affiliation: Department Agroselviter, University of Turin, via Leonardo da Vinci, 44, Grugliasco 10095 (Turin), Italy. luca.falchero@unito.it
authors.forename: Luca
authors.initials: L
authors.lastname: Falchero
authors.forename: Giacomo
authors.initials: G
authors.lastname: Sala
authors.forename: Alessandra
authors.initials: A
authors.lastname: Gorlier
authors.forename: Giampiero
authors.initials: G
authors.lastname: Lombardi
authors.forename: Michele
authors.initials: M
authors.lastname: Lonati
authors.forename: Giorgio
authors.initials: G
authors.lastname: Masoero
mesh_terms: D000818:Animals; D002417:Cattle; D004032:Diet; D017097:Electric Impedance; D004581:Electronics; D005260:Female; D031751:Festuca; D008892:Milk / Q000737:chemistry* / Q000145:classification*; D009812:Odorants / Q000032:analysis*; D029921:Trifolium