Abstract
The goal of this study was to examine the possibility of verifying the origin and authenticity of Polish cheese, Oscypek marked with protected designation of origin (PDO) label, based on its volatile profile. Oscypek and its false imitations Oscypek-like cheeses were analyzed using a solid-phase microextraction-mass spectrometry method (SPME-MS), which involved volatiles extraction by SPME with subsequent volatiles characterization by MS without particular components separation by gas chromatography. Collected data were treated using principal component analysis (PCA), linear discriminant analysis (LDA), soft independent modeling of class analogy (SIMCA), and support vector machines (SVM). The results of this study demonstrated that SPME-MS method combined with chemometric tools can be successfully used as electronic nose and applied to detect mislabeling and adulteration of PDO Oscypek cheese.
Highlights
The popularity of protected designation of origin (PDO) products is still growing; their chemical, microbial, and sensory characterization is crucial to differentiate them from similar products without PDO label (Mallia et al 2005), to provide final consumer’s satisfaction and protect from adulteration
The Solid-phase microextraction (SPME)-MS method employs no chromatographical separation, a single peak of unresolved volatile compounds desorbed from the fiber is obtained, and the collection of the data in mass spectrometer lasts only a few minutes
Electronic noses based on mass detection use fragment ions (m/z) which act as sensors and can be used as variables in chemometric data treatment
Summary
The goal of this study was to examine the possibility of verifying the origin and authenticity of Polish cheese, Oscypek marked with protected designation of origin (PDO) label, based on its volatile profile. The aim of this study was to develop a rapid method for the authenticity determination of traditional Polish cheese Oscypek based on the volatile profile
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