<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Pereira-Leal, José B</style></author><author><style face="normal" font="default" size="100%">Abreu, Isabel a</style></author><author><style face="normal" font="default" size="100%">Alabaça, Cláudia S</style></author><author><style face="normal" font="default" size="100%">Almeida, Maria Helena</style></author><author><style face="normal" font="default" size="100%">Almeida, Paulo</style></author><author><style face="normal" font="default" size="100%">Almeida, Tânia</style></author><author><style face="normal" font="default" size="100%">Amorim, Maria Isabel</style></author><author><style face="normal" font="default" size="100%">Araújo, Susana</style></author><author><style face="normal" font="default" size="100%">Azevedo, Herlânder</style></author><author><style face="normal" font="default" size="100%">Badia, Aleix</style></author><author><style face="normal" font="default" size="100%">Batista, Dora</style></author><author><style face="normal" font="default" size="100%">Bohn, Andreas</style></author><author><style face="normal" font="default" size="100%">Capote, Tiago</style></author><author><style face="normal" font="default" size="100%">Carrasquinho, Isabel</style></author><author><style face="normal" font="default" size="100%">Chaves, Inês</style></author><author><style face="normal" font="default" size="100%">Coelho, Ana Cristina</style></author><author><style face="normal" font="default" size="100%">Costa, Maria Manuela Ribeiro</style></author><author><style face="normal" font="default" size="100%">Costa, Rita</style></author><author><style face="normal" font="default" size="100%">Cravador, Alfredo</style></author><author><style face="normal" font="default" size="100%">Egas, Conceição</style></author><author><style face="normal" font="default" size="100%">Faro, Carlos</style></author><author><style face="normal" font="default" size="100%">Fortes, Ana M</style></author><author><style face="normal" font="default" size="100%">Fortunato, Ana S</style></author><author><style face="normal" font="default" size="100%">Gaspar, Maria João</style></author><author><style face="normal" font="default" size="100%">Gonçalves, Sónia</style></author><author><style face="normal" font="default" size="100%">Graça, José</style></author><author><style face="normal" font="default" size="100%">Horta, Marília</style></author><author><style face="normal" font="default" size="100%">Inácio, Vera</style></author><author><style face="normal" font="default" size="100%">Leitão, José M</style></author><author><style face="normal" font="default" size="100%">Lino-Neto, Teresa</style></author><author><style face="normal" font="default" size="100%">Marum, Liliana</style></author><author><style face="normal" font="default" size="100%">Matos, José</style></author><author><style face="normal" font="default" size="100%">Mendonça, Diogo</style></author><author><style face="normal" font="default" size="100%">Miguel, Andreia</style></author><author><style face="normal" font="default" size="100%">Miguel, Célia M</style></author><author><style face="normal" font="default" size="100%">Morais-Cecílio, Leonor</style></author><author><style face="normal" font="default" size="100%">Neves, Isabel</style></author><author><style face="normal" font="default" size="100%">Nóbrega, Filomena</style></author><author><style face="normal" font="default" size="100%">Oliveira, Maria Margarida</style></author><author><style face="normal" font="default" size="100%">Oliveira, Rute</style></author><author><style face="normal" font="default" size="100%">Pais, Maria Salomé</style></author><author><style face="normal" font="default" size="100%">Paiva, Jorge a</style></author><author><style face="normal" font="default" size="100%">Paulo, Octávio S</style></author><author><style face="normal" font="default" size="100%">Pinheiro, Miguel</style></author><author><style face="normal" font="default" size="100%">Raimundo, João Ap</style></author><author><style face="normal" font="default" size="100%">Ramalho, José C</style></author><author><style face="normal" font="default" size="100%">Ribeiro, Ana I</style></author><author><style face="normal" font="default" size="100%">Ribeiro, Teresa</style></author><author><style face="normal" font="default" size="100%">Rocheta, Margarida</style></author><author><style face="normal" font="default" size="100%">Rodrigues, Ana Isabel</style></author><author><style face="normal" font="default" size="100%">Rodrigues, José C</style></author><author><style face="normal" font="default" size="100%">Saibo, Nelson Jm</style></author><author><style face="normal" font="default" size="100%">Santo, Tatiana E</style></author><author><style face="normal" font="default" size="100%">Santos, Ana Margarida</style></author><author><style face="normal" font="default" size="100%">Sá-Pereira, Paula</style></author><author><style face="normal" font="default" size="100%">Sebastiana, Mónica</style></author><author><style face="normal" font="default" size="100%">Simões, Fernanda</style></author><author><style face="normal" font="default" size="100%">Sobral, Rómulo S</style></author><author><style face="normal" font="default" size="100%">Tavares, Rui</style></author><author><style face="normal" font="default" size="100%">Teixeira, Rita</style></author><author><style face="normal" font="default" size="100%">Varela, Carolina</style></author><author><style face="normal" font="default" size="100%">Veloso, Maria Manuela</style></author><author><style face="normal" font="default" size="100%">Ricardo, Cândido Pp</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A comprehensive assessment of the transcriptome of cork oak (Quercus suber) through EST sequencing.</style></title><secondary-title><style face="normal" font="default" size="100%">BMC genomics</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Cork oak</style></keyword><keyword><style  face="normal" font="default" size="100%">EST sequencing</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus suber</style></keyword><keyword><style  face="normal" font="default" size="100%">transcriptome</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2014</style></year></dates><volume><style face="normal" font="default" size="100%">15</style></volume><pages><style face="normal" font="default" size="100%">371</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">BACKGROUND: Cork oak (Quercus suber) is one of the rare trees with the ability to produce cork, a material widely used to make wine bottle stoppers, flooring and insulation materials, among many other uses. The molecular mechanisms of cork formation are still poorly understood, in great part due to the difficulty in studying a species with a long life-cycle and for which there is scarce molecular/genomic information. Cork oak forests are of great ecological importance and represent a major economic and social resource in Southern Europe and Northern Africa. However, global warming is threatening the cork oak forests by imposing thermal, hydric and many types of novel biotic stresses. Despite the economic and social value of the Q. suber species, few genomic resources have been developed, useful for biotechnological applications and improved forest management. RESULTS: We generated in excess of 7 million sequence reads, by pyrosequencing 21 normalized cDNA libraries derived from multiple Q. suber tissues and organs, developmental stages and physiological conditions. We deployed a stringent sequence processing and assembly pipeline that resulted in the identification of ~159,000 unigenes. These were annotated according to their similarity to known plant genes, to known Interpro domains, GO classes and E.C. numbers. The phylogenetic extent of this ESTs set was investigated, and we found that cork oak revealed a significant new gene space that is not covered by other model species or EST sequencing projects. The raw data, as well as the full annotated assembly, are now available to the community in a dedicated web portal at http://www.corkoakdb.org. CONCLUSIONS: This genomic resource represents the first trancriptome study in a cork producing species. It can be explored to develop new tools and approaches to understand stress responses and developmental processes in forest trees, as well as the molecular cascades underlying cork differentiation and disease response.</style></abstract><accession-num><style face="normal" font="default" size="100%">24885229</style></accession-num><notes><style face="normal" font="default" size="100%">APS</style></notes><research-notes><style face="normal" font="default" size="100%">APS</style></research-notes></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Santos, Sara</style></author><author><style face="normal" font="default" size="100%">Graça, José</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Stereochemistry of C18 Monounsaturated Cork Suberin Acids Determined by Spectroscopic Techniques Including 1H-NMR Multiplet Analysis of Olefinic Protons</style></title><secondary-title><style face="normal" font="default" size="100%">Phytochemical Analysis</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">(Z)-18-hydroxyoctadec-9-enoic acid</style></keyword><keyword><style  face="normal" font="default" size="100%">(Z)-octadec-9-enedoic acid</style></keyword><keyword><style  face="normal" font="default" size="100%">1H-NMR multiplet analysis</style></keyword><keyword><style  face="normal" font="default" size="100%">Cis/trans configuration</style></keyword><keyword><style  face="normal" font="default" size="100%">cork suberin</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2014</style></year></dates><volume><style face="normal" font="default" size="100%">25</style></volume><pages><style face="normal" font="default" size="100%">192-200</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Introduction Suberin is a biopolyester responsible for the protection of secondary plant tissues, and yet its molecular structure remains unknown. The C18:1 ω-hydroxyacid and the C18:1 α,ω-diacid are major monomers in the suberin structure, but the configuration of the double bond remains to be elucidated. Objective To unequivocally define the configuration of the C18:1 suberin acids. Methods Pure C18:1 ω-hydroxyacid and C18:1 α,ω-diacid, isolated from cork suberin, and two structurally very close C18:1 model compounds of known stereochemistry, methyl oleate and methyl elaidate, were analysed by NMR spectroscopy, Fourier transform infrared (FTIR) and Raman spectroscopy, and GC–MS. Results The GC–MS analysis showed that both acids were present in cork suberin as only one geometric isomer. The analysis of dimethyloxazoline (DMOX) and picolinyl derivatives proved the double bond position to be at C–9. The FTIR spectra were concordant with a cis-configuration for both suberin acids, but their unambiguous stereochemical assignment came from the NMR analysis: (i) the chemical shifts of the allylic 13C carbons were shielded comparatively to the trans model compound, and (ii) the complex multiplets of the olefinic protons could be simulated only with 3JHH and long-range 4JHH coupling constants typical of a cis geometry. Conclusion The two C18:1 suberin acids in cork are (Z)-18-hydroxyoctadec-9-enoic acid and (Z)-octadec-9-enedoic acid. Copyright © 2013 John Wiley &amp; Sons, Ltd.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Ramos, Miguel</style></author><author><style face="normal" font="default" size="100%">Rocheta, Margarida</style></author><author><style face="normal" font="default" size="100%">Carvalho, Luísa</style></author><author><style face="normal" font="default" size="100%">Inácio, Vera</style></author><author><style face="normal" font="default" size="100%">Graça, José</style></author><author><style face="normal" font="default" size="100%">Morais-Cecílio, Leonor</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Expression of DNA methyltransferases is involved in Quercus suber cork quality</style></title><secondary-title><style face="normal" font="default" size="100%">Tree Genetics &amp; Genomes</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">CMT3</style></keyword><keyword><style  face="normal" font="default" size="100%">Cork oak</style></keyword><keyword><style  face="normal" font="default" size="100%">Cork quality</style></keyword><keyword><style  face="normal" font="default" size="100%">DMAP1</style></keyword><keyword><style  face="normal" font="default" size="100%">DRM</style></keyword><keyword><style  face="normal" font="default" size="100%">MET1</style></keyword><keyword><style  face="normal" font="default" size="100%">MET2</style></keyword><keyword><style  face="normal" font="default" size="100%">phellogen activity</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2013</style></year></dates><volume><style face="normal" font="default" size="100%">9</style></volume><pages><style face="normal" font="default" size="100%">1481-1492</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Abstract Cork oak (Quercus suber ) is an important Portuguese species, mainly due to the economic value of the cork it produces. Cork results from phellogen, a meristematic tissue, which can locally produce lenticels or have discontinu- ities, originating “defects”: pores and nail inclusions that are detrimental to cork industrial use. Epigenetic processes control plant development and its deregulation can lead to altered phenotypes; therefore, the study of epigenetic players in the phellogen is important to understand the emergence of cork's defects. DNA methyltransferases (DNMTs) and one protein associated to MET1 (DMAP1) were characterized in Q. suber, and their gene expression was analyzed in phellogen and con- tiguous differentiating cell layers of trees producing high and low quality cork, after the evaluation of their defects by physical and image analysis methods. All classes of DNMTs (MET, DRM, and CMT) with the respective canonical motifs were identified in Q. suber. The expression analyses of these genes showed that QsDRM2 was the most active methyltransferases in the cells analyzed, and that all the genes were differentially expressed in trees with distinct cork quality,with a tendency for higher expression levels in lowquality producers. Interestingly, the global methylation level was higher in cells with low expression of DNA methyltransferases. A positive and significant correlation was obtained between QsDMAP1 gene expression and the percentage of cork defects. This work provides the first evidence that cork quality in Q. suber is likely influenced by epigenetic mechanisms</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Graça, José</style></author><author><style face="normal" font="default" size="100%">Santos, Sara</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Glycerol-derived ester oligomers from cork suberin.</style></title><secondary-title><style face="normal" font="default" size="100%">Chemistry and physics of lipids</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">a-o-Diacids</style></keyword><keyword><style  face="normal" font="default" size="100%">Cork</style></keyword><keyword><style  face="normal" font="default" size="100%">ESI-MS/MS analysis</style></keyword><keyword><style  face="normal" font="default" size="100%">Glycerolipids</style></keyword><keyword><style  face="normal" font="default" size="100%">o-Hydroxyacids</style></keyword><keyword><style  face="normal" font="default" size="100%">suberin</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2006///</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.ncbi.nlm.nih.gov/pubmed/16979606</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">144</style></volume><pages><style face="normal" font="default" size="100%">96 - 107</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The cork suberin polyester was partially depolymerized by a methanolysis reaction catalyzed by calcium hydroxide. The methanolisate was analysed by ESI-MS/MS in the form of [M+Li](+) adduct-ions. This reaction solubilized a mixture of monomers and oligomers, including a set of glycerol-derived dimeric and trimeric esters. Four types of glycerol esters were identified: monoacylglycerols of alpha,omega-diacids, of omega-hydroxyacids and of monoacids; diglycerol diesters of alpha,omega-diacids; diacylglycerols of alpha,omega-diacids; monoacylglycerols of linear dimeric esters of alpha,omega-diacids and omega-hydroxyacids. The alpha,omega-diacids and omega-hydroxyacids found as monomer residues in the glycerol esters are the main ones found as cork suberin monomers. It is concluded that suberin is a glycerol-derived lipid of polymeric dimensions. Due to the protective and insulating role that it plays in plants, suberin should be considered together with the other known glycerolipids that build up biological membranes.</style></abstract><issue><style face="normal" font="default" size="100%">1</style></issue><notes><style face="normal" font="default" size="100%">The following values have no corresponding Zotero field:&lt;br/&gt;accession-num: 16979606</style></notes></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Graça, José</style></author><author><style face="normal" font="default" size="100%">Santos, Sara</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Glycerol-derived ester oligomers from cork suberin.</style></title><secondary-title><style face="normal" font="default" size="100%">Chemistry and physics of lipids</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">a-o-Diacids</style></keyword><keyword><style  face="normal" font="default" size="100%">Cork</style></keyword><keyword><style  face="normal" font="default" size="100%">ESI-MS/MS analysis</style></keyword><keyword><style  face="normal" font="default" size="100%">Glycerolipids</style></keyword><keyword><style  face="normal" font="default" size="100%">o-Hydroxyacids</style></keyword><keyword><style  face="normal" font="default" size="100%">suberin</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2006</style></year></dates><volume><style face="normal" font="default" size="100%">144</style></volume><pages><style face="normal" font="default" size="100%">96-107</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The cork suberin polyester was partially depolymerized by a methanolysis reaction catalyzed by calcium hydroxide. The methanolisate was analysed by ESI-MS/MS in the form of [M+Li](+) adduct-ions. This reaction solubilized a mixture of monomers and oligomers, including a set of glycerol-derived dimeric and trimeric esters. Four types of glycerol esters were identified: monoacylglycerols of alpha,omega-diacids, of omega-hydroxyacids and of monoacids; diglycerol diesters of alpha,omega-diacids; diacylglycerols of alpha,omega-diacids; monoacylglycerols of linear dimeric esters of alpha,omega-diacids and omega-hydroxyacids. The alpha,omega-diacids and omega-hydroxyacids found as monomer residues in the glycerol esters are the main ones found as cork suberin monomers. It is concluded that suberin is a glycerol-derived lipid of polymeric dimensions. Due to the protective and insulating role that it plays in plants, suberin should be considered together with the other known glycerolipids that build up biological membranes.</style></abstract><accession-num><style face="normal" font="default" size="100%">16979606</style></accession-num></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Graça, José</style></author><author><style face="normal" font="default" size="100%">Santos, Sara</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Linear Aliphatic Dimeric Esters from Cork Suberin</style></title><secondary-title><style face="normal" font="default" size="100%">Biomacromolecules</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">cork suberin</style></keyword><keyword><style  face="normal" font="default" size="100%">dimeric esters</style></keyword><keyword><style  face="normal" font="default" size="100%">Dimerization</style></keyword><keyword><style  face="normal" font="default" size="100%">Electrospray Ionization</style></keyword><keyword><style  face="normal" font="default" size="100%">Electrospray Ionization: metho</style></keyword><keyword><style  face="normal" font="default" size="100%">Esters</style></keyword><keyword><style  face="normal" font="default" size="100%">Esters: chemistry</style></keyword><keyword><style  face="normal" font="default" size="100%">GC-MS (voyant)</style></keyword><keyword><style  face="normal" font="default" size="100%">Lipids</style></keyword><keyword><style  face="normal" font="default" size="100%">Mass</style></keyword><keyword><style  face="normal" font="default" size="100%">Membrane Lipids</style></keyword><keyword><style  face="normal" font="default" size="100%">Membrane Lipids: chemistry</style></keyword><keyword><style  face="normal" font="default" size="100%">Molecular Structure</style></keyword><keyword><style  face="normal" font="default" size="100%">Sensitivity and Specificity</style></keyword><keyword><style  face="normal" font="default" size="100%">Spectrometry</style></keyword><keyword><style  face="normal" font="default" size="100%">Trees</style></keyword><keyword><style  face="normal" font="default" size="100%">Trees: chemistry</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2006</style></year></dates><publisher><style face="normal" font="default" size="100%">American Chemical Society</style></publisher><volume><style face="normal" font="default" size="100%">7</style></volume><pages><style face="normal" font="default" size="100%">2003-2010</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Cork suberin was partially depolymerized by methanolysis catalyzed by calcium hydroxide. Analysis by GC-MS of the methanolysate showed suberin monomers, including glycerol and long-chain α,?-diacids and ?-hydroxyacids. ESI-MS analysis of the methanolysate showed, besides the aliphatic monomers, suberin oligomers, including linear dimeric esters of α,?-diacids and ?-hydroxyacids. Two types of dimeric esters were identified:? a α,?-diacid linked to a ?-hydroxyacid and two inter-linked ?-hydroxyacids. The α,?-diacids and ?-hydroxyacids found as monomer residues in the dimeric esters were mainly the C18 monomers with midchain substituents. The identification of these dimeric esters was based in their CID-MS/MS spectra and confirmed after synthesis of model compounds. The occurrence of inter-esterified long-chain monomers in suberin brings a new insight in the understanding of the polyester structure of this biopolymer.</style></abstract><accession-num><style face="normal" font="default" size="100%">16768426</style></accession-num><notes><style face="normal" font="default" size="100%">From Duplicate 1 (Linear Aliphatic Dimeric Esters from Cork Suberin - Graça, José; Santos, Sara)</style></notes><research-notes><style face="normal" font="default" size="100%">From Duplicate 1 (Linear Aliphatic Dimeric Esters from Cork Suberin - Graça, José; Santos, Sara)</style></research-notes></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Graça, José</style></author><author><style face="normal" font="default" size="100%">Pereira, Helena</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">The periderm development in Quercus suber</style></title><secondary-title><style face="normal" font="default" size="100%">IAWA Journal</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Cork</style></keyword><keyword><style  face="normal" font="default" size="100%">epidermis</style></keyword><keyword><style  face="normal" font="default" size="100%">lenticels</style></keyword><keyword><style  face="normal" font="default" size="100%">phellem</style></keyword><keyword><style  face="normal" font="default" size="100%">phellogen</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus suber</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2004</style></year></dates><volume><style face="normal" font="default" size="100%">25</style></volume><pages><style face="normal" font="default" size="100%">325-335</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">In the cork oak (Quercus suber L.), the phellogen differentiates during the first year of growth in the cell layer immediately under the epidermis and divides to form 3–6 suberized phellem cells. Division of the phellogen only occurs after suberization of the previous divided cell. During the first four years of growth, the phellem cells have tannin-filled lumens and it is only in the 5th to 7th years that they acquire the characteristics of ʻadultʼ cork cells with empty lumens and thin suberized walls. The len- ticels are formed by the lenticular phellogen, which differentiates under the stomata and has a high meristematic activity. In this region, the cells are unsuberized, with a loose arrangement and intercellular voids, consti- tuting the filling or complementary tissue. After three years, the lenticels appear as small protuberances that soon become conspicuous. Inclusions of sclerenchymatous nodules and isolated sclereids occur occasionally mostly in the vicinity of, or in, the lenticels.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Graça, José</style></author><author><style face="normal" font="default" size="100%">Pereira, Helena</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Feruloyl Esters of ω-Hydroxyacids in Cork Suberin</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Wood Chemistry and Technology</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Cork</style></keyword><keyword><style  face="normal" font="default" size="100%">ferulic acid</style></keyword><keyword><style  face="normal" font="default" size="100%">Feruloyl esters</style></keyword><keyword><style  face="normal" font="default" size="100%">GC-MS (voyant)</style></keyword><keyword><style  face="normal" font="default" size="100%">suberin</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1998</style></year></dates><publisher><style face="normal" font="default" size="100%">Taylor &amp; Francis</style></publisher><volume><style face="normal" font="default" size="100%">18</style></volume><pages><style face="normal" font="default" size="100%">207-217</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Feruloyl esters of ?-hydroxyacids were found in the alcoholysis products of suberin from Quercus suber cork. Their identification was made from mass spectra and by comparison with synthetic model compounds. The co-hydroxyls of suberinic hydroxyacids are thought to be the ester-bonding points between suberin aliphatics and associated aromatics.</style></abstract><notes><style face="normal" font="default" size="100%">doi: 10.1080/02773819809349577</style></notes><research-notes><style face="normal" font="default" size="100%">doi: 10.1080/02773819809349577</style></research-notes></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Graça, José</style></author><author><style face="normal" font="default" size="100%">Pereira, Helena</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Cork Suberin: A Glyceryl Based Polyester</style></title><secondary-title><style face="normal" font="default" size="100%">Holzforschung - International Journal of the Biology, Chemistry, Physics and Technology of Wood</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Cork</style></keyword><keyword><style  face="normal" font="default" size="100%">Glycerol</style></keyword><keyword><style  face="normal" font="default" size="100%">Monoacylglycero</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus suber</style></keyword><keyword><style  face="normal" font="default" size="100%">suberin</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1997</style></year></dates><volume><style face="normal" font="default" size="100%">51</style></volume><pages><style face="normal" font="default" size="100%">225-234</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Total depolymerization of cork from the cork oak (Quercus suber L.) by using a sodium methoxide catalysed methanolysis solubilized 53.2 % of the material, including 5.2 % of glycerol, 48,0 % of suberinic fatty acids and alcohols and minor amounts of ferulic acid. A very mild depolymerization using calcium oxide treated methanol, which solubilized only 2.0% of the cork material was studied by GC-MS. In the solubilized material, the total amount of aliphatic acids was 43.8 % (including alkanoic acids 4.0%. ω-hydroxyacids 13.2% and α,ω-diacids 26.6%), of 1-alkanols 2.1 % and of monoacylglycenols 32.1%. It was possible to identify 1-monoacylglycerols and 2-monoacylglycerols of alkanoic acids (1,2%), ω-hydroxyacids (3.7 %) and α,ω-diacids (22.8 %). It is proposed that suberin is a glyceryl based polymer and that its insoluble character is given, at least in part, by the cross-linking of dicarboxylic fatty acids with glycerol. The term suberin should be used for this aliphatic polyester component of the cell wall.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>3</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Graça, José</style></author><author><style face="normal" font="default" size="100%">Pereira, Helena</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Suberina: o polímero responsá vel pelas propriedades da cortiça</style></title><secondary-title><style face="normal" font="default" size="100%">II Congreso Forestal Español</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Cork</style></keyword><keyword><style  face="normal" font="default" size="100%">ferulic acid</style></keyword><keyword><style  face="normal" font="default" size="100%">Glycerol</style></keyword><keyword><style  face="normal" font="default" size="100%">suberin</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1997</style></year></dates><pub-location><style face="normal" font="default" size="100%">Pamplona</style></pub-location><pages><style face="normal" font="default" size="100%">225-228</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The macromolecular structure of suberin, the biopolymer mainly responsable for cork properties, is dicussed. The link of the suberinic aliphatic acids to glycerol is presented, supporting the hypothesis that suberin is a glyceridic polyester. The linkage of this aliphatic part, through ferulic acid, to the aromatic part, and the similarities of the later to lignin, are discussed. K.W.:</style></abstract></record></records></xml>