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Electronic Nose analysis of milk from cows grazing on two different Alpine vegetation types

Published online by Cambridge University Press:  18 May 2009

Luca Falchero ,
Giacomo Sala ,
Alessandra Gorlier ,
Giampiero Lombardi ,
Michele Lonati  and
Giorgio Masoero
Luca Falchero*
Affiliation:
Department Agroselviter, University of Turin – via Leonardo da Vinci, 44 – 10095Grugliasco (Turin), Italy
Giacomo Sala
Affiliation:
Agricultural Research Council (CRA), Zootechnics Experimental Institute, via Pianezza, 115 – 10151Turin, Italy
Alessandra Gorlier
Affiliation:
Department Agroselviter, University of Turin – via Leonardo da Vinci, 44 – 10095Grugliasco (Turin), Italy
Giampiero Lombardi
Affiliation:
Department Agroselviter, University of Turin – via Leonardo da Vinci, 44 – 10095Grugliasco (Turin), Italy
Michele Lonati
Affiliation:
Department Agroselviter, University of Turin – via Leonardo da Vinci, 44 – 10095Grugliasco (Turin), Italy
Giorgio Masoero
Affiliation:
Department Agroselviter, University of Turin – via Leonardo da Vinci, 44 – 10095Grugliasco (Turin), Italy
*
*For correspondence; e-mail: [email protected]
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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.

Keywords

E-NoseAlpine milkpasture vegetation typesrapid discriminationalpine cloverred fescue
Type
Research Article
Information
Journal of Dairy Research , Volume 76 , Issue 3 , August 2009 , pp. 365 - 371
Copyright
Copyright © Proprietors of Journal of Dairy Research 2009

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