TY - JOUR
T1 - ISOLATED LIGNANS OF ARAUCARIA ARAUCANA (MOLINA) K. KOCH PROVIDE WOOD PROTECTION AGAINST ATTACK BY THE XYLOPHAGOUS FUNGUS PLEUROTUS OSTREATUS (JACQ.) P. KUMM
AU - Bravo-Arrepol, Gastón
AU - Torres, Solange
AU - Pérez, Claudia
AU - González-Ramírez, Mariela
AU - Figueroa, Fabián
AU - Cabrera-Barjas, Gustavo
AU - Aranda, Mario
AU - Tiezzi, Antonio
AU - Gavin, José
AU - Paz, Cristian
AU - Becerra, José
N1 - Publisher Copyright:
© 2023 Sociedad Chilena de Quimica. All rights reserved.
PY - 2023
Y1 - 2023
N2 - Araucaria araucana (Molina) K. Koch is an evergreen conifer endemic of Southern Chile and it is considered a sacred tree by the Pehuenche originary people. A. araucana is endangered in the red book. The knots wood of A. araucana are resistant to biological degradation, due to producing a high amount of lignans, even after the decomposition of the tree is possible to find its knots in the forest. In the present study the chemical composition of three wood tissue of A. araucana; knotwood, stemwood, and branches were analyzed by HPTLC-MS, GC-MS, and NMR. Three lignans were purified and identified as eudesmin (1), ((1S,2R,3R) 1,2,3,4-tetrahydrona phthalene-2,3-diyl) dimethanol (2) and secoisolarisiresinol (3). Folin-Ciocalteu, DPPH and resistance to biodegradation assays were evaluated to extracts from compressed wood zones. Eudesmin was identified as the principal lignan in knots with a 0.5%w/w and outperformed the fungicide Nipacide® P511 in protecting wood against xylophage fungi Pleurotus ostreatus (Jacq.) P. Kumm.
AB - Araucaria araucana (Molina) K. Koch is an evergreen conifer endemic of Southern Chile and it is considered a sacred tree by the Pehuenche originary people. A. araucana is endangered in the red book. The knots wood of A. araucana are resistant to biological degradation, due to producing a high amount of lignans, even after the decomposition of the tree is possible to find its knots in the forest. In the present study the chemical composition of three wood tissue of A. araucana; knotwood, stemwood, and branches were analyzed by HPTLC-MS, GC-MS, and NMR. Three lignans were purified and identified as eudesmin (1), ((1S,2R,3R) 1,2,3,4-tetrahydrona phthalene-2,3-diyl) dimethanol (2) and secoisolarisiresinol (3). Folin-Ciocalteu, DPPH and resistance to biodegradation assays were evaluated to extracts from compressed wood zones. Eudesmin was identified as the principal lignan in knots with a 0.5%w/w and outperformed the fungicide Nipacide® P511 in protecting wood against xylophage fungi Pleurotus ostreatus (Jacq.) P. Kumm.
KW - Araucaria araucana
KW - Pleurotus ostreatus (Jacq.) P. Kumm
KW - eudesmin
KW - knotwood composition
KW - lignan
KW - wood resistance
UR - http://www.scopus.com/inward/record.url?scp=85178145406&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:85178145406
SN - 0717-9324
VL - 68
SP - 5871
EP - 5875
JO - Journal of the Chilean Chemical Society
JF - Journal of the Chilean Chemical Society
IS - 2
ER -