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Istituto di scienza dell'alimentazione

Torna all'elenco Contributi in atti di convegno anno 2003

Contributo in atti di convegno

Tipo: Abstract in atti di convegno

Titolo: Identification of some adulteration in milk and in water buffalo mozzarella cheese by MALDI TOF MS

Anno di pubblicazione: 2003

Autori: R.Cozzolino; S.Passalacqua; S.Salemi; D.Garozzo

Affiliazioni autori: CNR, ICTMP, Viale A. Doria 6, 95125 Catania, Italy Industria Lattiero Casearia A. Zappalą srl, Zafferana Etnea, Catania, Italy

Autori CNR:

  • ROSARIA COZZOLINO
  • DOMENICO GAROZZO

Abstract: A rapid and accurate method to identify bovine and ewe milk adulteration of fresh water buffalo mozzarella cheese by using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOFMS) is described. The differentiation among mozzarella made from water buffalo milk and from mixtures of less expensive bovine and, more recently, ewe milk with water buffalo milk is achieved using whey proteins, ?-lactalbumin and ?-lactoglobulins as molecular markers. It is worth noting that the method proposed here is, to our knowledge, the first strategy able to characterize possible fraudulent additions of ewe milk in samples of water buffalo milk devoted to the production of water buffalo mozzarella cheese. In addition, a linear relationship was found between the relative response of the molecular ion and the abundance of the analysed whey proteins. This demonstrates that this approach can be used to determine the amount of bovine or ovine milk added to water buffalo milk employed for mozzarella cheese production. Furthermore, this method also appears suitable for the analysis of ewe cheese. Hence these findings open the way to a new field for mass spectrometry in the evaluation of possible fraudulence in dairy industry production.

Congresso nome: 51st Conference on Mass Spectrometry and Allied Topics

Congresso luogo: MONTREAL (CANADA)

Congresso data: giugno

Congresso rilevanza: Internazionale

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