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 | |
| Publication status | Published - Oct 2006 |
| MoE publication type | A1 Journal article-refereed |
Funding
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).
Keywords
- Antioxidants
- Bark
- Flavonoids
- Knots
- Lignans
Fingerprint
Dive into the research topics of 'Knotwood and bark extracts: Strong antioxidants from waste materials'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver