Abstract
A cross-regional comparison of cumin (*Cuminum cyminum*) essential oil composition from seven Mediterranean countries: Morocco, Spain, Italy, Turkey, Tunisia, Egypt, and Syria. GC-MS analysis and principal component analysis (PCA) revealed significant compositional variation across geographical origins, with implications for quality standardization and valorization of regional varieties.
Background
Cumin is one of the most economically important aromatic plants in the Mediterranean basin. Geographic origin significantly influences the chemical composition of its essential oil, with consequences for both flavor profile and bioactivity.
Materials and Methods
Essential oil samples were obtained from Morocco, Spain, Italy, Turkey, Tunisia, Egypt, and Syria. Oils were extracted by hydrodistillation and analyzed by GC-MS. Principal component analysis was applied to identify compositional clusters.
Key Findings
- Significant inter-regional variation in major monoterpene and sesquiterpene profiles
- Moroccan samples showed distinct chemotypic characteristics
- PCA clearly separated samples into Mediterranean sub-clusters
Implications
Understanding regional variation in aromatic plant chemistry supports geographical indication certification and the development of high-value botanical products.