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Geographical identification of strawberries based on stable isotope ratio and multi-elemental analysis coupled with multivariate statistical analysis: A Slovenian case study by Lidija Strojnik; Doris Potočnik; Marta Jagodic Hudobivnik; Darja Mazej; Boštjan Japelj; Nadja Škrk; Suzana Marolt; David Heath; Nives Ogrinc is a Agricultural and Biological Sciences article available to read on EtoBox.

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The geographical classification and authentication of strawberries were attempted using discriminant and class-modelling methods applied to stable isotopes of light elements and elemental composition. The work involved creating a database of 92 authentic Slovenian strawberry samples and 32 imported samples. All samples were harvested between 2018 and 2020. A good geographical classification of Slovenian and non-Slovenian strawberries was obtained despite different production years using discriminant approaches. However, for verifying compliance with a given specification (geographical indications), a class-modelling approach was used to build an unbiased verification model. Class models generated by data-driven soft independent modelling of class analogy (DD-SIMCA) had high sensitivity (96% to 97%) and good specificity (81% to 91%) on a yearly basis, while a more generalised model combining total yearly data gave a lower specificity (63%). Of the 33 commercially available samples (test samples) with declared Slovenian origin, 39% were from outside of Slovenia.

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Author

Lidija Strojnik; Doris Potočnik; Marta Jagodic Hudobivnik; Darja Mazej; Boštjan Japelj; Nadja Škrk; Suzana Marolt; David Heath; Nives Ogrinc

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)