Chemical Composition of Lipophilic Bark Extracts from Pinus pinaster and Pinus pinea Cultivated in Portugal
authors Sousa, JLC; Ramos, PAB; Freire, CSR; Silva, AMS; Silvestre, AJD
nationality International
journal APPLIED SCIENCES-BASEL
author keywords bark; biorefinery; diterpenic resin acids; GC-MS analysis; Pinus pinaster; Pinus pinea
keywords BIOACTIVE COMPOUNDS; 2 CHEMOTYPES; ABIETANE; ACIDS; WOOD; DITERPENOIDS; RESIN; QUANTIFICATION; IDENTIFICATION; RECOVERY
abstract The chemical composition of lipophilic bark extracts from Pinus pinaster and Pinus pinea cultivated in Portugal was evaluated using gas chromatography-mass spectrometry. Diterpenic resin acids were found to be the main components of these lipophilic extracts, ranging from 0.96 g kg(-1)dw in P. pinea bark to 2.35 g kg(-1) dw in P. pinaster bark. In particular, dehydroabietic acid (DHAA) is the major constituent of both P. pinea and P. pinaster lipophilic fractions, accounting for 0.45 g kg(-1) dw and 0.95 g kg(-1 )dw, respectively. Interestingly, many oxidized compounds were identified in the studied lipophilic extracts, including DHAA-oxidized derivatives (7-oxo-DHAA, 7 alpha/beta-hydroxy-DHAA, and 15-hydroxy-DHAA, among others) and also terpin (an oxidized monoterpene). These compounds are not naturally occurring compounds, and their formation might occur by the exposure of the bark to light and oxygen from the air, and the action of micro-organisms. Some of these compounds have not been previously reported as lipophilic constituents of the bark of the referred pine species. Other constituents, such as aromatic compounds, fatty acids, fatty alcohols, and sterols, are also present in the studied extracts. These results can represent an opportunity to valorize P. pinaster and P. pinea by-products as a primary source of the bioactive resin acids that are integrated into the current uses of these species.
publisher MDPI
issn 2076-3417
year published 2018
volume 8
issue 12
digital object identifier (doi) 10.3390/app8122575
web of science category Chemistry, Multidisciplinary; Materials Science, Multidisciplinary; Physics, Applied
subject category Chemistry; Materials Science; Physics
unique article identifier WOS:000455145000243
  ciceco authors
  impact metrics
journal analysis (jcr 2017):
journal impact factor 1.689
5 year journal impact factor 1.855
category normalized journal impact factor percentile 43.587
dimensions (citation analysis):
altmetrics (social interaction):



 


Sponsors

1suponsers_list_ciceco.jpg