Journal of Wood Science

, Volume 53, Issue 6, pp 524–528 | Cite as

Exploitation of polyphenol-rich pine barks for potent antioxidant activity

Note

Abstract

The phenolic composition of pine bark from a variety of Pinus species was estimated by measuring Klason lignin, acid-soluble lignin, and a 1% NaOH extract. Polyphenol contents of hot water extracts from pine bark were determined by the Folin-Ciocalteu assay and the vanillin-H2SO4 assay. Among the pine bark varieties investigated, Pinus radiata bark showed the highest polyphenol content and potent antioxidant activity. Pinus rigida bark was also a usable polyphenol-rich source, whereas Pinus densiflora bark had a low yield (5.1%) of hot water extract, although it showed potent antioxidant activity. Correlations between proanthocyanidin content in pine bark and antioxidant activity were observed. The results suggested that proanthocyanidin was the crucial contributor to potent antioxidant activity in pine bark.

Key words

Pine bark Polyphenol Antioxidant activity Proanthocyanidin 

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Copyright information

© The Japan Wood Research Society 2007

Authors and Affiliations

  • Chang Sub Ku
    • 1
  • Jeong Phil Jang
    • 1
  • Sung Phil Mun
    • 2
  1. 1.Department of Advanced Organic Materials EngineeringChonbuk National UniversityJeonjuKorea
  2. 2.Division of Forest Science, College of Agriculture and Life SciencesChonbuk National UniversityJeonjuKorea

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