Blueberry

Blueberry (Vaccinium myrtillus) is a shrub species belonging to the heath family (Ericaceae). It typically grows in forested areas, mountainous regions, and moist soils. The plant reaches a height of 10–50 cm and produces spherical, fleshy fruits in shades of blue to purple during the summer months. These fruits are darkly pigmented due to anthocyanins and are rich in antioxidants.

Blueberry (Source: Anadolu Agency)

Biogeography and Natural Distribution

Vaccinium myrtillus is widely distributed across northern and central Europe, as well as in western Asia and North America. In Türkiye, its natural habitat is primarily found in the moist, cool and acidic forest understory ecosystems of the Eastern Black Sea Region. Rize, Artvin and Trabzon provinces recognize it by local names such as “likapa”, “çalı çileği”, “murt” or “ayı üzümü”. It commonly grows at elevations between 800 and 2,000 metres, often beneath forests of hornbeam, fir, and spruce.

As an important understory species in its ecosystems, blueberry plays ecological roles in maintaining soil vitality and supporting wildlife. Its fruits serve as a food source for birds and mammals.

Agricultural Production and Economic Potential

Blueberry fruits are produced through both traditional and modern agricultural practices. In addition to the wild species V. myrtillus, cultivated varieties include Vaccinium corymbosum (highbush blueberry) and Vaccinium angustifolium (lowbush blueberry), which feature larger fruits. These varieties have recently begun to be commercially cultivated in Türkiye.

Blueberry is primarily produced in the Black Sea region through organic farming projects, rural development support programs, and cooperatives, and is transformed into value-added products. The fruit is consumed fresh but is also marketed as frozen, dried, jam, syrup, marmalade, juice, tea, and capsule forms.

Biochemical Composition and Health Effects

Blueberry is a nutrient-rich fruit, particularly high in anthocyanins, flavonoids, phenolic acids, and vitamins C, K, and E. These compounds play a protective role against oxidative stress on cell membranes. The high antioxidant capacity of blueberry makes it a significant functional food. Additionally, its high fiber content contributes to positive effects on the digestive system.

Unripe Blueberry (Source: TRT News)

Applications of Blueberry

Use in the Food Industry

Blueberry is widely used in the food industry in both fresh and processed forms. The species Vaccinium corymbosum is particularly preferred in commercial applications due to its large berries and favorable harvesting characteristics.

Fresh Consumption

Fresh blueberries are consumed directly in fruit salads, breakfast dishes, and snacks. Its low glycemic index has made it one of the preferred fruits for diabetic diets.

Dried and Frozen Products

Dried blueberries are marketed as energy-dense snacks and are used in muesli, granola, nut mixes, and energy bars. Frozen blueberries are ideal for off-season consumption and retain much of their freshness.

Beverage Products

Blueberry is processed into fruit juice, smoothies, and herbal teas. It is also used in juice concentrates and fermented products such as fruit kefir. Its high antioxidant content makes it especially suitable for marketing health-oriented beverages.

Jams, Marmalades, and Confectionery

Blueberry is used in jams, marmalades, compotes, and pie fillings. Due to the partial heat stability of its anthocyanin pigments, it retains color even after thermal processing.

Use in Cosmetics and Personal Care Products

In recent years, blueberry extract has become a preferred botanical ingredient in skincare products. This is primarily due to its antioxidant capacity in combating free radicals and its rich content of vitamin C.

• It is used in skin serums, antioxidant creams, under-eye care products, and anti-aging masks.
• It is favored for its ability to maintain skin elasticity, support collagen synthesis, and provide protection against UV radiation.

Use in Livestock and Feed Industry

Some studies suggest that incorporating blueberry pomace into animal feed may enhance immune function due to its antioxidant properties. However, its use in this field remains limited and experimental.

Assessment in Agriculture and Horticulture

The blueberry plant is also considered for soil rehabilitation in areas with high soil acidity. Additionally, due to its shrub form, it is used in natural landscape management for erosion control and aesthetic enhancement.

Blueberry Plant (Source: İnegöl Municipality)

Conservation and Sustainability

The natural habitats of blueberry are at risk due to climate change, forest area reduction, and unregulated harvesting. To address this, Türkiye’s Ministry of Agriculture and Forestry promotes projects aimed at conserving natural populations and encouraging sustainable production methods.