Journal
FOOD ANALYTICAL METHODS
Volume 15, Issue 7, Pages 1936-1944Publisher
SPRINGER
DOI: 10.1007/s12161-022-02258-7
Keywords
Gas chromatography isotope mass spectrometry; Hierarchical clustering methods; Milk and dairy products; C3/C4 plants
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The composition of milk depends on the species of the mammal and its diet. The fatty acid distribution is closely related to the species and the type of forage used to feed the animals. The Comprehensive Isotopic Data Evaluation method is effective in identifying the predominant type of forage and animal breed. This research strategy may also be valuable for protecting PDO dairy products.
Milk composition is dependent on the mammalian's specie and on its diet. In particular, the fatty acid distribution is strongly dependent on the species and is significantly correlated to the type of forage used to feed animals. In this work, the Comprehensive Isotopic Data Evaluation (CIDE) method, applied to the carbon isotope ratio of different fatty acids (delta C-13(FAs) values) of milk and dairy products, is shown to be suitable to identify the prevalent type of forage used to feed the animals and, at the same type, the animal breed. Results of isotopic analysis are validated by agglomerative hierarchical clustering methods, providing the reliability of the proposed experimental approach. The strategy here discussed might be also useful to defend Protected Designation of Origin (PDO) dairy products, such as Mozzarella di Bufala Campana.
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