Knotwood and bark extracts: Strong antioxidants from waste materials

Suvi P. Pietarinen; Stefan M. Willför; Markku O. Ahotupa; Jarl E. Hemming; Bjarne R. Holmbom

doi:10.1007/s10086-005-0780-1

Knotwood and bark extracts: Strong antioxidants from waste materials

Suvi P. Pietarinen^*, Stefan M. Willför, Markku O. Ahotupa, Jarl E. Hemming, Bjarne R. Holmbom

^*Corresponding author for this work

Research output: Contribution to journal › Article › Scientific › peer-review

187 Citations (Scopus)

Abstract

The antioxidant properties of hydrophilic extracts of knotwood of several industrially important tree species were evaluated by lipid-peroxidation inhibition and peroxyl-trapping capacity tests. The results were compared with the antioxidant properties of hydrophilic extracts of bark, and pure lignans and flavonoids isolated from knotwood extracts. The knot extracts from several tree species were stronger antioxidants than the bark extracts, which can, however, also be classified as strong antioxidants. In addition, the antioxidant properties of most of the knotwood extracts are stronger than the pure compounds. It is concluded that knotwood is a rich source of natural antioxidants.

Original language	English
Pages (from-to)	436-444
Number of pages	9
Journal	Journal of Wood Science
Volume	52
Issue number	5
DOIs	https://doi.org/10.1007/s10086-005-0780-1
Publication status	Published - Oct 2006
MoE publication type	A1 Journal article-refereed

Keywords

Antioxidants
Bark
Flavonoids
Knots
Lignans

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10.1007/s10086-005-0780-1

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title = "Knotwood and bark extracts: Strong antioxidants from waste materials",

abstract = "The antioxidant properties of hydrophilic extracts of knotwood of several industrially important tree species were evaluated by lipid-peroxidation inhibition and peroxyl-trapping capacity tests. The results were compared with the antioxidant properties of hydrophilic extracts of bark, and pure lignans and flavonoids isolated from knotwood extracts. The knot extracts from several tree species were stronger antioxidants than the bark extracts, which can, however, also be classified as strong antioxidants. In addition, the antioxidant properties of most of the knotwood extracts are stronger than the pure compounds. It is concluded that knotwood is a rich source of natural antioxidants.",

keywords = "Antioxidants, Bark, Flavonoids, Knots, Lignans",

author = "Pietarinen, {Suvi P.} and Willf{\"o}r, {Stefan M.} and Ahotupa, {Markku O.} and Hemming, {Jarl E.} and Holmbom, {Bjarne R.}",

note = "Funding Information: Acknowledgments We thank Sune Forsstr{\"o}m at Sydv{\"a}st Polytechnic, Dave Hensel at Blandin Paper, Chuck Barber and Dompak M. Siregar at Riau Andalan Pulp and Paper, Indonesia, S.M. Krutov at St. Petersburg Forest Technical Academy, Donald and Peter MacNeil, Edgar Sj{\"o}vall, Janja Zule, and Markku Reunanen. This work is part of the activities at the {\AA}bo Akademi Process Chemistry Centre within the Finnish Centre of Excellence Programme (2000–2005) selected by the Academy of Finland and is a part of the project “NanOx” funded by the National Technology Agency of Finland (Tekes). Copyright: Copyright 2008 Elsevier B.V., All rights reserved.",

year = "2006",

month = oct,

doi = "10.1007/s10086-005-0780-1",

language = "English",

volume = "52",

pages = "436--444",

journal = "Journal of Wood Science",

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T2 - Strong antioxidants from waste materials

AU - Pietarinen, Suvi P.

AU - Willför, Stefan M.

AU - Ahotupa, Markku O.

AU - Hemming, Jarl E.

AU - Holmbom, Bjarne R.

N1 - Funding Information: Acknowledgments We thank Sune Forsström at Sydväst Polytechnic, Dave Hensel at Blandin Paper, Chuck Barber and Dompak M. Siregar at Riau Andalan Pulp and Paper, Indonesia, S.M. Krutov at St. Petersburg Forest Technical Academy, Donald and Peter MacNeil, Edgar Sjövall, Janja Zule, and Markku Reunanen. This work is part of the activities at the Åbo Akademi Process Chemistry Centre within the Finnish Centre of Excellence Programme (2000–2005) selected by the Academy of Finland and is a part of the project “NanOx” funded by the National Technology Agency of Finland (Tekes). Copyright: Copyright 2008 Elsevier B.V., All rights reserved.

PY - 2006/10

Y1 - 2006/10

N2 - The antioxidant properties of hydrophilic extracts of knotwood of several industrially important tree species were evaluated by lipid-peroxidation inhibition and peroxyl-trapping capacity tests. The results were compared with the antioxidant properties of hydrophilic extracts of bark, and pure lignans and flavonoids isolated from knotwood extracts. The knot extracts from several tree species were stronger antioxidants than the bark extracts, which can, however, also be classified as strong antioxidants. In addition, the antioxidant properties of most of the knotwood extracts are stronger than the pure compounds. It is concluded that knotwood is a rich source of natural antioxidants.

AB - The antioxidant properties of hydrophilic extracts of knotwood of several industrially important tree species were evaluated by lipid-peroxidation inhibition and peroxyl-trapping capacity tests. The results were compared with the antioxidant properties of hydrophilic extracts of bark, and pure lignans and flavonoids isolated from knotwood extracts. The knot extracts from several tree species were stronger antioxidants than the bark extracts, which can, however, also be classified as strong antioxidants. In addition, the antioxidant properties of most of the knotwood extracts are stronger than the pure compounds. It is concluded that knotwood is a rich source of natural antioxidants.

KW - Antioxidants

KW - Bark

KW - Flavonoids

KW - Knots

KW - Lignans

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VL - 52

SP - 436

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JO - Journal of Wood Science

JF - Journal of Wood Science

IS - 5

ER -

Knotwood and bark extracts: Strong antioxidants from waste materials

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Keywords

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