Journal of Forest and Environmental Science

Institute of Forest Science, kangwon National University (강원대학교 산림과학연구소)
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Analysis of Total Phenolic, Flavonoid Contents, and Antioxidant Capacity Extract from Leaves of Selected Accessions of Two Wild Pear Species, Pyrus pyrifolia and P. ussuriensis

  • Yang, Si Woong (Department of Forest Environment System, College of Forest & Environmental Sciences, Kangwon National University) ;
  • Lee, Hwa (Department of Forest Environment System, College of Forest & Environmental Sciences, Kangwon National University) ;
  • Song, Jae Mo (Gangwon Forest Science Institute) ;
  • Choi, Sun Eun (Department of Forest Biomaterials Engineering, College of Forest & Environmental Sciences, Kangwon National University) ;
  • Cheong, Eun Ju (Department of Forest Environment System, College of Forest & Environmental Sciences, Kangwon National University)
  • Received : 2021.06.06
  • Accepted : 2021.07.20
  • Published : 2021.09.30
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Abstract

Two species, P. pyrifolia and P. ussuriensis, of the genus Pyrus native to Korea, are valuable genetic resources that can be used for food, dietary supplement, pharmaceutical, and cosmetics. Bioactive compounds of the plant leaves are the main components that are used for the products. Farmers had cultivated a few individuals from the wild to produce fruits or leaves for traditional remedy or tea; however, bioactive components of their leaves are not tested. We selected some trees from the natural stand that have distinct traits for the improvement program. We investigated the bioassay on the extracts' bioactive compounds and antioxidant capacity from the selected accessions and other accessions, including newly developed cultivars. The contents of the phenolic compounds and flavonoids from the leaf extracts of the selected accessions were higher than the commonly cultivated trees in both species but lower than 'Sanhyang' in P. ussuriensis. The antioxidant capacity was measured using two assay methods, DPPH and ABST. The selected cultivars also had higher inhibitory activity than common trees. The selected accession 'Cultivar 3' in P. pyrifolia had the highest radical scavenging activity than others. Although leaves of the accessions were used only in this study, all three selected individuals have the potential for cultivar in containing high bioactive compounds and antioxidant capacity.

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References

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