Advanced

The cell wall composition of Norway spruce earlywood and latewood revisited

Fredriksson, Maria LU ; Pedersen, Nanna Bjerregaard and Thygesen, Lisbeth Garbrecht (2018) In International Wood Products Journal2010-01-01+01:00 p.1-6
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.

(Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
epub
subject
keywords
ATR-FTIR, Cell wall composition, earlywood, hemicellulose, holocellulose, latewood, lignin, Raman microspectroscopy, spruce
in
International Wood Products Journal2010-01-01+01:00
pages
6 pages
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
2018-06-25 14:06:00
@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},
  keyword      = {ATR-FTIR,Cell wall composition,earlywood,hemicellulose,holocellulose,latewood,lignin,Raman microspectroscopy,spruce},
  language     = {eng},
  month        = {06},
  pages        = {1--6},
  publisher    = {Maney Publishing},
  series       = {International Wood Products Journal2010-01-01+01:00},
  title        = {The cell wall composition of Norway spruce earlywood and latewood revisited},
  url          = {http://dx.doi.org/10.1080/20426445.2018.1479680},
  year         = {2018},
}