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Detection of Hen Lysozyme on Proteic Profiles of Grana Padano Cheese through SELDI-TOF MS High-Throughput Technology during the Ripening Process

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Abstract

Lysozyme is used in cheese manufacture in order to prevent blowing in cheeses caused by Clostridium tyrobutyricum. Being an egg derivative, the presence of lysozyme must be included on the label for residual allergenic risk (2003/89/CE). The aim of this study was to evaluate the presence of lysozyme on proteic profiles of typical Italian cheeses such as Grana Padano through surface-enhanced laser desorption/ionization time-of-flight mass spectrometry. The proteolytic activity of ripening (from 0 to 24 months), confirmed by a decrease in casein, did not influence the intensity of lysozyme peaks. Furthermore, ripened Grana Padano cheese could be differentiated on mass profiling from immature Grana Padano by the presence of particular signals that are probably related to casein proteolysis.

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Acknowledgments

The authors are grateful to Milano Ristorazione for the support during this research. The authors also thank Caseificio Zucchelli for preparing the experimental cheeses.

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Correspondence to Luciana Rossi.

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Dragoni, I., Balzaretti, C., Rossini, S. et al. Detection of Hen Lysozyme on Proteic Profiles of Grana Padano Cheese through SELDI-TOF MS High-Throughput Technology during the Ripening Process. Food Anal. Methods 4, 233–239 (2011). https://doi.org/10.1007/s12161-010-9146-4

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  • DOI: https://doi.org/10.1007/s12161-010-9146-4

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