Biological and chemical characteristics of "included sapwood" of Juniperus virginiana L
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| 024 | 7 | 0 | |a 10.1515/HF.2004.010 |2 doi |
| 035 | |a (NATIONALLICENCE)gruyter-10.1515/HF.2004.010 | ||
| 245 | 0 | 0 | |a Biological and chemical characteristics of "included sapwood" of Juniperus virginiana L |h [Elektronische Daten] |c [J. Bauch, J. Puls, R. Klupsch, C. Vogel] |
| 520 | 3 | |a The reddish-violet heartwood of Juniperus virginiana L. contains irregularly distributed and longitudinally oriented streaks of light-coloured wood, described as "included sapwood”. A histological study revealed that a blockage of the rays, which is caused by wounds often associated with tiny shakes, branch stubs and included bark, may lead to this anomaly. A study of fresh wood immediately after felling of the trees showed that "included sapwood” lacks physiological activity similar to the adjacent normal heartwood. Cellular UV-spectroscopic analysis revealed a secondary metabolism particularly of phenolic compounds in the pit membranes of tracheids during "included sapwood” formation, whereas the reddish-violet flavonoid compounds do not develop in this anomalous wood. Chemical analyses of petrol ether, diethyl ether, acetone and ethanol/water extracts of sapwood, "included sapwood” and heartwood showed that the accessory compounds cedrol, α-cedrene, widdrol, thujopsene and cuparene increased in "included sapwood” compared to sapwood. As opposed to the reddish-violet heartwood compounds, these sesquiterpenes turned out to be highly toxic against a brown-rot fungus in a bioassay. These findings justify defining "included sapwood” as a heartwood anomaly, since the important wood characteristics of this tissue obey the definition of heartwood rather than sapwood. This anomaly should no longer be a reason to exclude this type of wood from commercial utilisation. | |
| 540 | |a Copyright © 2004 by Walter de Gruyter GmbH & Co. KG | ||
| 690 | 7 | |a Timber & wood processing |2 nationallicence | |
| 690 | 7 | |a Biotechnology |2 nationallicence | |
| 690 | 7 | |a Materials science |2 nationallicence | |
| 700 | 1 | |a Bauch |D J. |4 aut | |
| 700 | 1 | |a Puls |D J. |4 aut | |
| 700 | 1 | |a Klupsch |D R. |4 aut | |
| 700 | 1 | |a Vogel |D C. |4 aut | |
| 773 | 0 | |t Holzforschung |d Walter de Gruyter |g 58/1(2004-02-05), 74-81 |x 0018-3830 |q 58:1<74 |1 2004 |2 58 |o hfsg | |
| 856 | 4 | 0 | |u https://doi.org/10.1515/HF.2004.010 |q text/html |z Onlinezugriff via DOI |
| 908 | |D 1 |a research article |2 jats | ||
| 950 | |B NATIONALLICENCE |P 856 |E 40 |u https://doi.org/10.1515/HF.2004.010 |q text/html |z Onlinezugriff via DOI | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Bauch |D J. |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Puls |D J. |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Klupsch |D R. |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Vogel |D C. |4 aut | ||
| 950 | |B NATIONALLICENCE |P 773 |E 0- |t Holzforschung |d Walter de Gruyter |g 58/1(2004-02-05), 74-81 |x 0018-3830 |q 58:1<74 |1 2004 |2 58 |o hfsg | ||
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| 898 | |a BK010053 |b XK010053 |c XK010000 | ||
| 949 | |B NATIONALLICENCE |F NATIONALLICENCE |b NL-gruyter | ||