Investigation of carbohydrates, phenolic components and antioxidant effects of strawberry tree (Arbutus unedo L.)

In this study, Strawberry tree (Arbutus unedo L.) fruit samples which naturally grown in Alioba district of Bartın province were used. The phenolic compounds of Arbutus unedo L. were determined by HPLC method. Total phenol content determination has been detected with Folin-Ciocalteu Reagent (FCR). Antioxidant properties of Arbutus unedo L. were determined by free radical scavenging activity. Respectively detected rates of carbohydrates; D-(-)-Fructose (25.721%), D-(+)-Glucose (16.409%), Sucrose (6.499%) and D-(+)-Galactose (0.224%). Vitamin C (58.849%), gallic acid (3.484%), katechin (2.511%), shiringaldehyde (1.367%), quercetin (0.760%), p-Hydroxybenzoic acid (0.663%), trans-Ferrulic acid (0.435%), benzoic acid (0.045%) and rosmarinic acid (0,03%) were determined as phenolic compounds. Total phenolic compound quantity was found 274,372 m GAE/g. Antioxidant inhibition percentages were found 27.134, 500% at 250 µg/ml, 46.710% at 500 µg/ml and 70.419 % at 1000 µg/ml.