Antioxidant Activities and Related Polyphenolic Constituents of the Methanol Extract Fractions from Broussonetia papyrifera Stem Bark and Wood
허명록, Wang Lan, Hu Jian-He, 이석기, 왕명현,
소속 상세정보
허명록 ( Xu Ming-Lu )
Henan Province Henan Institute of Science and Technology College of Chemistry Science
( Wang Lan )
Kangwon National University College of Biomedical Sciences
( Hu Jian-He )
Henan Province Henan Institute of Science and Technology College of Chemistry Science
이석기 ( Lee Soek-Ki )
Kangwon National University College of Medicine Department of Otolaryngology
왕명현 ( Wang Myeong-Hyeon )
Kangwon National University College of Biomedical Sciences
KMID : 1007520100190030677
Abstract
Broussonetia papyrifera radix, fruits, leaves, and stems exhibit antioxidant, antinociceptive, antityrosinase, anti-inflammatory, and antiplatelet activities. However, study of the antioxidant activity of stem bark has been limited. In this work the antioxidant activity of stem bark and wood extracts were compared using different methods, and their phenolic constituents were analyzed. The bark ethyl acetate fraction exhibited the highest 2,2-diphenyl-2- picrylhydrazyl hydrate (DPPH) radical, hydroxyl radical scavenging activity, and the highest total phenolic and flavonoid contents. Both bark and wood n-butanol fractions showed stronger superoxide anion radical scavenging activity and reducing potential than other fractions. The bark and wood hexane fraction provided the highest level of ion chelating power. The high performance liquid chromatography (HPLC) analysis reveals there are more phenolic compounds in bark than in wood. These findings suggest that bark exhibits a higher antioxidant capacity than wood and that ethyl acetate and n-butanol fractions of B. papyrifera bark are potential natural resources for pharmacology of functional foods.
키워드
Broussonetia papyrifera; bark; wood; antioxidant; high performance liquid chromatography (HPLC)
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