Antioxidative activity in vapor phase against nitrogen dioxide of condensed tannin from bark

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K18727
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Wood science
• Research Institution: Forest Research and Management Organization
• Principal Investigator: Makino Rei 国立研究開発法人森林研究・整備機構, 森林総合研究所, 主任研究員等 (50353850)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: タンニン / 樹皮 / 抗酸化能 / 二酸化窒素

Outline of Final Research Achievements

Condensed tannin is a polymeric polyphenol abundantly contained in many barks and has high antioxidant activity in liquid phase. Antioxidative acitivity in vapor phase of tannin was examined with nitrogen dioxide which is a representative air pollutant. Tannin decreased oxidation of linolic acid by nitrogen dioxide, while catechin, a polyphenol monomer, had little antioxidative activity. Additionally, tannin had NO2 removal activity, B-ring structure contributed NO2 removal activity and electron-donating substituent on B-ring enhanced NO2 removal activity.

Free Research Field

樹木化学