Akçakoca Yellow Hazelnut

Akçakoca Yellow Hazelnut is a local hazelnut variety that grows exclusively within the boundaries of the Akçakoca district in Düzce, in western Türkiye’s Black Sea region, and is distinguished by its high oil and amino acid content. This product was granted geographical indication status under its origin name on 27 February 2019, and is differentiated from other hazelnut types by its levels of oleic and linoleic acids.

Distinctive Characteristics

The Akçakoca Yellow Hazelnut has an oil content ranging between 48.08% and 63.46%. Its levels of the primary fatty acids—oleic acid (81.70%–83.57%) and linoleic acid (7.32%–9.57%)—are notably high. It has been found to contain higher linoleic acid levels compared to Giresun hazelnut varieties.

Additionally, its high amino acid content—including 2292 mg of aspartic acid and 689 mg of histidine per 100 grams—significantly influences its flavor and aroma. This variety exhibits strong vegetative growth and is also distinguishable from other hazelnut types in the region by its leaf structure, shoot length, and bud color and shape.

Image of Akçakoca Yellow Hazelnut (Anadolu Agency)

Geographical Boundary and Growing Conditions

The Akçakoca district is bordered by Alaplı district of Zonguldak to the east, Kocaali district of Sakarya to the west, and the Düzce provincial center to the south. This area, located between the Melen River and Karataş Creek, covers approximately 1050 km². For cultivation, an annual average temperature of 13–16 °C and rainfall exceeding 700 mm are recommended. Ideal terrain features low frost risk and balanced humidity levels.

Agricultural Characteristics

Thanks to its fibrous root system, the plant can develop roots up to 80 cm deep on sloped land. It shows optimal growth in loamy, humus-rich soils. Flowering begins in late autumn and continues until spring. Since pollination occurs via wind, planting multiple varieties together is recommended. Due to the plant’s sensitivity to periodicity, consistent annual yields cannot be guaranteed.

Geographical Indication and Oversight

The Akçakoca Yellow Hazelnut was granted geographical indication status under its origin name on 27 February 2019. The holder of this registration is the Akçakoca Chamber of Commerce and Industry. The product may only be cultivated within the boundaries of the Akçakoca district of Düzce and must be marketed with the registered logo.

Inspections are conducted under three categories: trees, fruits, and cultivation methods. These are carried out every six months, every three months, and monthly, respectively. Oversight responsibility is shared among the Akçakoca Chamber of Commerce and Industry, the District Directorate of Agriculture, Düzce University, and the Chamber of Agriculture. Legal action is taken in cases of unauthorized production or labeling.