TY - JOUR
T1 - Lipophilic extractives in populus x euramericana "guariento" stemwood and bark
AU - Xu, Chunlin
AU - Qin, Menghua
AU - Fu, Yingjuan
AU - Liu, Na
AU - Hemming, Jarl
AU - Holmbom, Bjarne
AU - Willför, Stefan
N1 - Funding Information:
This work is part of the activities at the Åbo Akademi University Process Chemistry Centre within the Finnish Centre of Excellence Programme (2000–2011) appointed by the Academy of Finland. Markku Reunanen is acknowledged for his kind help with the GC-MS analyses. The authors also acknowledge the financial support by the Program for New Century Excellent Talents in University, the National Natural Science Foundation of China, and funds of the Excellent Young Researchers of Shandong Province (Grant No: 2006BS02017).
Copyright:
Copyright 2010 Elsevier B.V., All rights reserved.
PY - 2010/5
Y1 - 2010/5
N2 - The lipophilic extractives in stemwood and bark from three different heights of Populus euramericana Guariento were analyzed. The bark samples, especially from 4 and 8 meters height, contained much more extractives than the stemwood samples. The lipophilic extractives identified by Gas Chromatography-Mass Spectroscopy (GC-MS) were composed of five component groups (i.e. triglycerides, steryl esters, free fatty acids, sterols, and free fatty alcohols both in the stemwood and bark). Besides ferulic acid esters, -amyrin and its esters, 4-hydroxycinnamic acid esters of fatty alcohols were also identified in the stemwood and bark. Small amounts of alkanes and oligomeric or polymeric material with higher molar mass than triglycerides were present only in the bark. Glycerides, mainly triglycerides, were the largest component group of the lipophilic extractives. The high proportion of short-chain fatty acids released after alkaline hydrolysis are beneficial when removing pitch particles or fatty acid soaps by dispersing and washing during pulping and papermaking.
AB - The lipophilic extractives in stemwood and bark from three different heights of Populus euramericana Guariento were analyzed. The bark samples, especially from 4 and 8 meters height, contained much more extractives than the stemwood samples. The lipophilic extractives identified by Gas Chromatography-Mass Spectroscopy (GC-MS) were composed of five component groups (i.e. triglycerides, steryl esters, free fatty acids, sterols, and free fatty alcohols both in the stemwood and bark). Besides ferulic acid esters, -amyrin and its esters, 4-hydroxycinnamic acid esters of fatty alcohols were also identified in the stemwood and bark. Small amounts of alkanes and oligomeric or polymeric material with higher molar mass than triglycerides were present only in the bark. Glycerides, mainly triglycerides, were the largest component group of the lipophilic extractives. The high proportion of short-chain fatty acids released after alkaline hydrolysis are beneficial when removing pitch particles or fatty acid soaps by dispersing and washing during pulping and papermaking.
KW - Aspen
KW - Bark
KW - Lipophilic extractives
KW - Populus euramericana Guariento
KW - Stemwood
UR - http://www.scopus.com/inward/record.url?scp=77952404302&partnerID=8YFLogxK
U2 - 10.1080/02773810903085994
DO - 10.1080/02773810903085994
M3 - Article
AN - SCOPUS:77952404302
SN - 0277-3813
VL - 30
SP - 105
EP - 117
JO - Journal of Wood Chemistry and Technology
JF - Journal of Wood Chemistry and Technology
IS - 2
ER -