Building a database for the quality characteristics of the Protected Designation of Origin saffron Krokos Kozanis, considering international trade requirements

Abstract

Aim: Saffron, a precious spice deriving from the emblematic Crocus sativus L. cultivation, is a traditional product with high socio-economic and cultural value in Greece, especially in the region of Western Macedonia where the Protected Designation of Origin (PDO) Krokos Kozanis thrives. Since 1981, its international trade has relied on the International Standard Organization (ISO) 3632 standard specifications for quality classification. Currently, the Codex Alimentarius Committee on spices and culinary herbs is developing a “Codex standard for dried floral parts—Saffron”, which introduces a new “extra” quality class on top of the existing ones. Efforts are underway to harmonize both standards for the benefit of the interested parties. In this direction, scientific evidence from compositional databases is essential for objective decision-making. This work presents a systematic study of the compositional variability in Greek saffron in terms of coloring, flavor, and aroma strength, according to ISO and Codex standards. Methods: Saffron samples (n = 547) were obtained from the registered growers-members of the Cooperative of Kozani Saffron Growers (Kozani, Western Macedonia, Greece, 2022 harvest). The samples were collected under the responsibility of the administration and quality control manager of the Cooperative, sent directly to the laboratory and analyzed according to ISO 3632-2 test methods for moisture, coloring, flavor, and aroma strength. The analytical data were combined with meta-data about individual member production, processing practices, etc. Results: The captured trends and overall discussion reveal to which extent the Greek PDO Krokos Kozanis can address challenges stemming from the introduction of the “extra” category. Conclusions: The results were used to initiate building a compositional database for the PDO Krokos Kozanis. The data should be regularly updated to serve not only the internal quality control management system of the Cooperative but also as reliable documentation for the official controls of the registered product.