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Antioxidant activity and content of phenolic compounds in fruits of mainly cultivated blueberries in Korea
J Plant Biotechnol 2018;45:392-399
Published online December 31, 2018
© 2018 The Korean Society for Plant Biotechnology.

Soon Eun Kwon, Soon Young Ahn, Hae Keun Yun

Department of Horticulture and Life Science, Yeungnam University, Gyeonsan 38541, Korea
Correspondence to: e-mail: haekeun@ynu.ac.kr
Received September 27, 2018; Revised November 9, 2018; Accepted November 9, 2018.
cc This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0)which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Fruits of 10 cultivars (‘Blue Gold’, ‘Brigitta’, ‘Coville’, ‘Duke’, ‘Nelson’, ‘North Blue’, ‘Rancocas’, ‘Sierra’, Sunrise, and ‘Weymouth’) of blueberries (Vaccinum corymbosun) were analyzed for characteristics, contents of total phenolic compounds and flavonoids and antioxidant activity in this study. Fruit weights ranged from 0.83 to 1.88 g. Total soluble solids concentration varied from 9.7 in ‘Duke’ to 16.6 ˚Brix in ‘Sierra’ with titratable acidities of 0.94 % in ‘Sunrise’ and 1.75% in ‘Brigitta’. There are relatively high contents in ‘North Blue’ (23.75 mg GAE·g-1 FW) and low contents in ‘Coville’ (17.15 mg GAE·g-1 FW) in total phenolic compounds. Contents of total phenolic compounds were high in ‘Nelson’(14.1 mg QE·g-1 FW) and low in ‘Duke’ (10.1 mg QE·g-1 FW). Analysis of antioxidant activity of blueberry fruits showed that there were high acitiviites of ABTS+ radical scavenging in ‘Rancoccas’ (82.2%), ‘Bluegold’ (79.6%), and ‘Nelson’ (77.8%), and high activities of DPPH radical scavenging in ‘Rancocca’ (76.0%), and high in hydroxy radical scavenging in ‘Nelson’ (73.0%). Quantification analysis method of qualitative data showed that ‘Bluegold’, ‘Nelson’, ‘Northblue’, and ‘Rancocas’ had high contents of phenol and flavonoid compounds, and activity antioxidants of berries. Blueberry cultivars selected by statistical quantification analysis can be utilized as valuable genetic resources for breeding of blueberry with high antioxidant activities in the future.
Keywords : Genetic resources, Quantification analysis, Vaccinum, Variation


December 2018, 45 (4)
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