The cell wall composition of Norway spruce earlywood and latewood revisited
(2018) In International Wood Products Journal 9(2). p.80-85- Abstract
The xylem of gymnosperm trees consists mainly of tracheids, which generally have larger radial diameters and thinner walls in earlywood than in latewood. Information on possible chemical differences is limited, but according to a few studies, earlywood normally contains more lignin relative to cellulose than latewood. However, for methods giving results per gram dry matter, this result is expected since a larger part of the earlywood cell wall material consists of lignin-rich middle lamella. In this study, we used Raman microspectroscopy to assess relative biopolymer composition of earlywood and latewood secondary cell walls from mature sapwood of Norway spruce (Picea abies (L.) Karst.). In addition, infrared spectroscopy of isolated... (More)
The xylem of gymnosperm trees consists mainly of tracheids, which generally have larger radial diameters and thinner walls in earlywood than in latewood. Information on possible chemical differences is limited, but according to a few studies, earlywood normally contains more lignin relative to cellulose than latewood. However, for methods giving results per gram dry matter, this result is expected since a larger part of the earlywood cell wall material consists of lignin-rich middle lamella. In this study, we used Raman microspectroscopy to assess relative biopolymer composition of earlywood and latewood secondary cell walls from mature sapwood of Norway spruce (Picea abies (L.) Karst.). In addition, infrared spectroscopy of isolated earlywood and latewood from the same growth rings as well as additional growth rings was performed. Both methods showed significantly higher relative lignin content in the earlywood which confirms results from earlier studies.
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- author
- Fredriksson, Maria LU ; Pedersen, Nanna Bjerregaard and Thygesen, Lisbeth Garbrecht
- organization
- publishing date
- 2018-05-31
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- ATR-FTIR, Cell wall composition, earlywood, hemicellulose, holocellulose, latewood, lignin, Raman microspectroscopy, spruce
- in
- International Wood Products Journal
- volume
- 9
- issue
- 2
- pages
- 80 - 85
- publisher
- Maney Publishing
- external identifiers
-
- scopus:85047961403
- ISSN
- 2042-6445
- DOI
- 10.1080/20426445.2018.1479680
- language
- English
- LU publication?
- yes
- id
- 94c2a849-6397-42e5-8ba6-aa2282915dbc
- date added to LUP
- 2018-06-11 12:39:11
- date last changed
- 2022-04-02 00:43:22
@article{94c2a849-6397-42e5-8ba6-aa2282915dbc, abstract = {{<p>The xylem of gymnosperm trees consists mainly of tracheids, which generally have larger radial diameters and thinner walls in earlywood than in latewood. Information on possible chemical differences is limited, but according to a few studies, earlywood normally contains more lignin relative to cellulose than latewood. However, for methods giving results per gram dry matter, this result is expected since a larger part of the earlywood cell wall material consists of lignin-rich middle lamella. In this study, we used Raman microspectroscopy to assess relative biopolymer composition of earlywood and latewood secondary cell walls from mature sapwood of Norway spruce (Picea abies (L.) Karst.). In addition, infrared spectroscopy of isolated earlywood and latewood from the same growth rings as well as additional growth rings was performed. Both methods showed significantly higher relative lignin content in the earlywood which confirms results from earlier studies.</p>}}, author = {{Fredriksson, Maria and Pedersen, Nanna Bjerregaard and Thygesen, Lisbeth Garbrecht}}, issn = {{2042-6445}}, keywords = {{ATR-FTIR; Cell wall composition; earlywood; hemicellulose; holocellulose; latewood; lignin; Raman microspectroscopy; spruce}}, language = {{eng}}, month = {{05}}, number = {{2}}, pages = {{80--85}}, publisher = {{Maney Publishing}}, series = {{International Wood Products Journal}}, title = {{The cell wall composition of Norway spruce earlywood and latewood revisited}}, url = {{http://dx.doi.org/10.1080/20426445.2018.1479680}}, doi = {{10.1080/20426445.2018.1479680}}, volume = {{9}}, year = {{2018}}, }