Department of Forest Resources, Yeungnam University1
Department of Horticulture and Life Science, Yeungnam University2
Bokbunja Experimental Station3
Department of Food Science and Technology, Yeungnam University4
In order to select the raspberry cultivars that have high contents of bioactive constituents and high antioxidant activities, 7 cultivated and 2 wild raspberries which were selected and cultivated in the Bokbunja Institute were evaluated for their physicochemical characteristics, bioactive constituents, and antioxidant activities. The wild raspberry of Asan was the smallest among the sample raspberries but it had the highest sugar and lowest acid contents among the raspberries. Another wild raspberry of Ulleungdo had the highest total phenolic compound and ellagic acid contents, 182.97, 55.25 mg･100 g-1 FW, respectively, although it was small and had low sugar and high acid contents. Among the widely cultivated raspberry cultivars in Kimhae, ‘Wangttal’ cultivar was a big raspberry with 12.80% sugar content, and another unknown raspberry cultivar was as small as the wild raspberry with 14.60% sugar content. Although ‘Wangttal’ and the unknown raspberry cultivars cultivated in Kimhae possess lower contents of total phenolic compound (159.62, 165.94 mg･100 g-1) and ellagic acid (45.7, 52.1 mg･100 g-1) than the wild raspberry of Ulleungdo, the contents of total flavonoids (14.28, 14.90 mg･100 g-1) and total anthocyanins (28.69, 30.48 mg･100 g-1) were higher. Also the wild raspberry of Ulleungdo, ‘Wangttal’, and the unknown raspberry cultivar of Kimhae had higher antioxidant activities measured by FRAP (Ferric reducing antioxidant power), DPPH (2,2-diphenyl-1-picrylhydrazyl), and ABTS (2,2'-azinobis-(3-ethylbenzothiazoline- 6-sulphonic acid) assays. The present study shows that three raspberry cultivars could be potent resources for raspberry breeding and functional material development.
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