The aim of the study was to investigate the possibility to differentiate the 4 most important species in Italian dairy industry (cow, buffalo, sheep, and goat), applying a bottom-up proteomic approach to assess the milk species involved in cheese production. Selective peptides were detected in milk to use as markers in cheese products. Trypsin-digested milk samples of cow, sheep, goat, and buffalo, analyzed by HPLC-tandem mass spectrometry provided species-specific peptides, some of them recognized by Mascot software (Matrix Science Ltd., Boston, MA) as derived from well-known species specific proteins. A multianalyte multiple reaction monitoring method, built with these specific peptides, was successfully applied to cheeses with different composition, showing high specificity in detection of species involved. Neither aging nor production method seemed to affect the response, demonstrating that chosen peptides well act as species markers for dairy products.

A rapid high-performance liquid chromatography-tandem mass spectrometry assay for unambiguous detection of different milk species employed in cheese manufacturing / Bernardi, Nadia; Benetti, Giuseppe; Haouet, Naceur M; Sergi, Manuel; Grotta, Lisa; Marchetti, Sonia; Castellani, Federica; Martino, Giuseppe. - In: JOURNAL OF DAIRY SCIENCE. - ISSN 0022-0302. - 98:12(2015), pp. 8405-8413. [10.3168/jds.2015-9769]

A rapid high-performance liquid chromatography-tandem mass spectrometry assay for unambiguous detection of different milk species employed in cheese manufacturing

SERGI, Manuel;MARCHETTI, SONIA;
2015

Abstract

The aim of the study was to investigate the possibility to differentiate the 4 most important species in Italian dairy industry (cow, buffalo, sheep, and goat), applying a bottom-up proteomic approach to assess the milk species involved in cheese production. Selective peptides were detected in milk to use as markers in cheese products. Trypsin-digested milk samples of cow, sheep, goat, and buffalo, analyzed by HPLC-tandem mass spectrometry provided species-specific peptides, some of them recognized by Mascot software (Matrix Science Ltd., Boston, MA) as derived from well-known species specific proteins. A multianalyte multiple reaction monitoring method, built with these specific peptides, was successfully applied to cheeses with different composition, showing high specificity in detection of species involved. Neither aging nor production method seemed to affect the response, demonstrating that chosen peptides well act as species markers for dairy products.
2015
HPLC-MS/MS; animal species; cheese; milk; peptides; trypsin
01 Pubblicazione su rivista::01a Articolo in rivista
A rapid high-performance liquid chromatography-tandem mass spectrometry assay for unambiguous detection of different milk species employed in cheese manufacturing / Bernardi, Nadia; Benetti, Giuseppe; Haouet, Naceur M; Sergi, Manuel; Grotta, Lisa; Marchetti, Sonia; Castellani, Federica; Martino, Giuseppe. - In: JOURNAL OF DAIRY SCIENCE. - ISSN 0022-0302. - 98:12(2015), pp. 8405-8413. [10.3168/jds.2015-9769]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1653236
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