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

Research Project

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
Project Status	Completed (Fiscal Year 2017)
Budget Amount *help	¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000) Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000) Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000) Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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.

Report

(4 results)