Comparison of Antioxidant Properties of Wild Blueberries (Vaccinium arctostaphylos L. and Vaccinium myrtillus L.) with Cultivated Blueberry Varieties (Vaccinium corymbosum L.) in Artvin Region of Turkey

Karadeniz Bölgesinde ve Artvinde doğal olarak bulunan Vaccinium arctostaphylos L. ve Vaccinium myrtillus L. genellikle ayı üzümü, Trabzon çayı ve likapa olarak adlandırılmaktadır. Ayrıca Artvinde 5-6 yıldır yaban mersininin farklı türleri (Vaccinium corymbosum L.) yetiştirilmektedir. Yaban mersinleri yüksek biyolojik aktiviteye sahip antosiyaninler ve flavonoller gibi dikkate değer seviyede fenolik bileşenler içermektedir. Bu çalışmada Artvin bölgesinde doğal yayılım gösteren V. arctostaphylos ve V. myrtillus ile kültüre alınan V. corymbosum farklı türlerinin antioksidan aktiviteleri belirlenecektir. Bu çalışmada yabani türlerin kültürlere göre daha yüksek antioksidan etkiye sahip olduğunu görüldü. V. myrtillus türleri, V. corymbosum türlerinden daha yüksek toplam polifenol (11,539-20,742 mg GAE/g kuru örnek), flavonoid (1,182-2,676 mg QE/g kuru örnek) ve antosiyanin (3,305-11,473 mg Cyn/g kuru örnek) değerine sahiptir. Ayrıca yabani türler yüksek CUPRAC, FRAP ve DPPH değerlerine sahiptir. Antioksidan aktiviteler CUPRAC için Troloks eşdeğeri cinsinden 0,143 -0,297 mmol TEAC/g kuru örnek aralığında bulunmuştur. DPPH için IC50 değerleri 0,229 1,178 mg/ml kuru örnek aralığında belirlenmiştir. FRAP için FeSO4 .7H2O eşdeğeri cinsinden 130,719346,115 µmol Fe/g kuru örnek aralığında bulunmuştur.

Artvin Yöresine Ait Doğal Yaban Mersini (Vaccinium arctostaphllos ve Vaccinium myrtillus) ile Kültüre Alınan Yaban Mersini (Vaccinium corymbosum) Türlerinin Antioksidan Özelliklerinin Karşılaştırılması

Vaccinium arctostaphylos L. and Vaccinium myrtillus L. which are found naturally in most part of Blacksea Region, and Artvin are generally called bear grape, Trabzon tea, and likapa. In addition, different varieties of blueberry (Vaccinium corymbosum L.) have been cultivated in Artvin region for 5 or 6 years. Blueberries contain appreciable levels of phenolic compounds, including anthocyanins and flavonols that have high biological activity. V. arctostaphylos and V. myrtillus show that natural distrubition with received V. corymbosum of different cultured species in Artvin region will be determined antioxidant activity in this study. In this study showed that wild species had a higher antioxidant effect than cultivated species. V. myrtillus had high total polyphenols (11.539-20.742 mg GAE/g dry sample), flavonoids (1.182-2.676 mg QE/g dry sample) and anthocyanins (3.305-11.473 mg Cyn/g dry sample) than V. corymbosum species. In addition, wild species had high CUPRAC, FRAP and DPPH values. The antioxidant activities found with CUPRAC, expressed as trolox equivalent antioxidant capacity ranged from 0.143 to 0.297 mmol TEAC/g dry sample. Those determined with DPPH expressed as IC50 ranged from 0.229 to 1.178 mg/ml. Those determined with FRAP expressed as FeSO4 .7H2O equivalent were in 130.719346.115 µmol Fe/g dry sample range.

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