Characterization of physiological functions of sapwood IV: Formation and accumulation of lignans in sapwood of Cryptomeria japonica (L.f.) D. Don after felling

Holzforschung ◽  
2005 ◽  
Vol 59 (4) ◽  
pp. 418-421 ◽  
Author(s):  
Takanori Imai ◽  
Mika Sato ◽  
Naohiro Takaku ◽  
Shingo Kawai ◽  
Hideo Ohashi ◽  
...  

Abstract Matairesinol and pinoresinol were isolated from sugisapwood 40 days after felling. These lignans were not detected in the heartwood. Accordingly, they are probably the result of post-mortem biosynthesis in sapwood parenchyma cells.

2001 ◽  
Vol 11 ◽  
pp. S282-S283
Author(s):  
D. Marazziti ◽  
I. Masala ◽  
G. Giannaccini ◽  
E. Di Nasso ◽  
L. Betti ◽  
...  

TAPPI Journal ◽  
2020 ◽  
Vol 19 (10) ◽  
pp. 511-524
Author(s):  
TASLIMA FERDOUS ◽  
M.A. QUAIYYUM ◽  
KAZI M. YASIN ARAFAT ◽  
M. SARWAR JAHAN

In this paper, chia plant was characterized in terms of chemical, morphological, and anatomical properties. Chia plant was characterized with low α-cellulose (30.5%); moderate lignin (23.2%) with syringyl to guaiacyl ratio of 1.41; and shorter fiber length (0.67 mm) with thinner cell wall (1.91 μm) and good flexibility coefficient (71.44). Anatomical features showed that chia plant consists of vessels, fibers, parenchyma cells, and collenchyma cells. Chia plant pulping was evaluated in soda-anthraquinone (soda-AQ) and formic acid/peroxyformic acid (FA/PFA) processes. Chia plant was difficult to delignify in the alkaline process. The FA/PFA process produced higher pulp yield at the same kappa number than the soda-AQ process. Unbleached soda-AQ chia pulp exhibited good proper-ties in terms of tensile, bursting, and tearing strengths, even at the unrefined stage, due to high drainability of the pulps. Alkaline peroxide bleached FA/PFA pulp exhibited better papermaking properties and 2% higher brightness than the D0(EP)D1 bleached soda-AQ pulp.


2006 ◽  
Vol 52 (2) ◽  
pp. 95-100 ◽  
Author(s):  
Hiroshi Matsunaga ◽  
Rika Shiotari ◽  
Junji Matsumura ◽  
Kazuyuki Oda ◽  
Yasuhiro Utsumi ◽  
...  

1993 ◽  
Vol 18 (7) ◽  
pp. 743-749 ◽  
Author(s):  
C. Wilson ◽  
A. M. Gibson ◽  
J. R. McDermott

2003 ◽  
Vol 74 (6) ◽  
pp. 838-851 ◽  
Author(s):  
Philip H. Schwartz ◽  
Peter J. Bryant ◽  
Tannin J. Fuja ◽  
Hailing Su ◽  
Diane K. O'Dowd ◽  
...  

2007 ◽  
Vol &NA; ◽  
pp. S260-S261
Author(s):  
Takashi Fujimura ◽  
Norihiro Futamura ◽  
Terumi Midoro-Horiuti ◽  
Randall M Goldblum ◽  
Hiroshi Yasueda ◽  
...  

2013 ◽  
Vol 88 (9-10) ◽  
pp. 1858-1861 ◽  
Author(s):  
G. Pintsuk ◽  
I. Bobin-Vastra ◽  
S. Constans ◽  
P. Gavila ◽  
M. Rödig ◽  
...  

2012 ◽  
Vol 87 (3) ◽  
pp. 348-355 ◽  
Author(s):  
R.P.V.J. Rajapakse ◽  
M. Iwagami ◽  
S. Wickramasinghe ◽  
S.M. Walker ◽  
T. Agatsuma

AbstractBivitellobilharzia nairi was first recorded from an Indian elephant (Elephas maximus) in Berlin. Infections with this parasite have become increasingly important in E. maximus maximus populations in Sri Lanka. The present work is the first morphological description of this schistosome from Sri Lanka. A number of adult worms were recovered from a dead Asian elephant near the elephant orphanage, Pinnawala, in Sri Lanka. The observed clinical features of the infected elephant included emaciation, subventral oedema and anaemia. Post-mortem results indicated that the liver was enlarged and adult schistosomes were found in the blood vessels of the liver parenchyma. The total number of worms recovered from a portion of the liver was 129,870, which is an average of 22 worms per 100 g of liver. The present study uses both light microscopic and scanning electron microscope (SEM) techniques for the morphological and topographical characterization of this parasite and to permit comparison with other species of schistosomes. Morphologically, these worms correspond very well to the description of B. nairi by Dutt & Srivastava (1955). Moreover, it is clear that B. nairi is a distinctive species easily differentiated from other schistosomes. The SEM study of the tegument of male worms shows that the surface of B. nairi is smoother than in other schistosomes.


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