<?xml version="1.0" encoding="UTF-8"?><xml><records><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%">GONZÁLEZ ADRADOS, J R</style></author><author><style face="normal" font="default" size="100%">García Vallejo, M C</style></author><author><style face="normal" font="default" size="100%">Moliner Recuero, M</style></author><author><style face="normal" font="default" size="100%">GONZÁLEZ HERNÁNDEZ, F</style></author><author><style face="normal" font="default" size="100%">Vega García, R</style></author><author><style face="normal" font="default" size="100%">Ortega Fernández, C</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">FACTORES QUE AFECTAN LA INTERACCIÓN CORCHO-VINO</style></title><secondary-title><style face="normal" font="default" size="100%">IV Congreso Forestal Español</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">absorción</style></keyword><keyword><style  face="normal" font="default" size="100%">migración global</style></keyword><keyword><style  face="normal" font="default" size="100%">Tapón</style></keyword><keyword><style  face="normal" font="default" size="100%">tratamiento superficial</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2005</style></year></dates><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Se ha estudiado la influencia de distintos tratamientos superficiales aplicados a dos tipos de tapón de corcho (natural y 1+1) sobre los parámetros que caracterizan la interacción corcho – vino: migración global y absorción. La migración global se ha determinado con el tapón introducido en el gollete (normativa ISO) obteniendo unos valores que oscilan entre 5,3 y 26,5 mg/tapón. La migración mínima atribuible al tratamiento superficial oscila entre 2,8 y 6,0 mg/tapón, mientras que la causada por los productos naturales del corcho varía entre 5,3 mg/tapón (tapón natural) y 12,0 mg/tapón (tapón 1+1). La mayor parte de la variabilidad es atribuible al tipo de tapón, siendo el tratamiento superficial un factor de menor significación. En la práctica su efecto se reduce a la existencia o no de tratamiento, siendo mínimas las diferencias entre los distintos tratamientos ensayados. El tratamiento superficial consigue reducir la absorción a valores entre 1/2 y 1/6 de los obtenidos en los tapones sin tratamiento, lo que refleja su efecto amortiguador sobre la interacción. Se han ensayado metodologías alternativas más sencillas para la determinación de la migración global, sin obtener resultados comparables</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%">García Vallejo, M C</style></author><author><style face="normal" font="default" size="100%">Varea, S</style></author><author><style face="normal" font="default" size="100%">Cadahía, E</style></author><author><style face="normal" font="default" size="100%">Fernández de Simón, B</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">INFLUENCIA DE LA &quot;MANCHA AMARILLA&quot; SOBRE LA COMPOSICIÓN QUÍMICA DEL CORCHO Y LA PRESENCIA DE TCA</style></title><secondary-title><style face="normal" font="default" size="100%">III Congreso Forestal Español</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">chemical composition</style></keyword><keyword><style  face="normal" font="default" size="100%">Cork</style></keyword><keyword><style  face="normal" font="default" size="100%">yellow stain</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2001</style></year></dates><pub-location><style face="normal" font="default" size="100%">Granada</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The anomaly of cork known as &quot;yellow stain&quot; has been considered as the main responsible for the presence, in some cork stoppers, of 2,4,6-trichloroanisole (TCA), compound that confers the &quot;cork taint&quot; to wine. In this Communication, a comparative study on the chemical composition of cork (suberin, waxes, polyphenols, holocellulose and lignin) and on the presence of chloroanisoles and chlorophenols is carried out with samples of healthy cork and cork affected with that anomaly. The cork with &quot;yellow stain&quot; differed from the healthy cork because of the presence of TCA and the low content of tannins.</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%">García Vallejo, M C</style></author><author><style face="normal" font="default" size="100%">Conde, E</style></author><author><style face="normal" font="default" size="100%">Cadahía, E</style></author><author><style face="normal" font="default" size="100%">DeSimon, B F</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Suberin composition of reproduction cork from Quercus suber</style></title><secondary-title><style face="normal" font="default" size="100%">HOLZFORSCHUNG</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Cork</style></keyword><keyword><style  face="normal" font="default" size="100%">epoxy acids</style></keyword><keyword><style  face="normal" font="default" size="100%">fatty alcohols</style></keyword><keyword><style  face="normal" font="default" size="100%">fatty and hydrixy-fatty acids</style></keyword><keyword><style  face="normal" font="default" size="100%">gas chromatography</style></keyword><keyword><style  face="normal" font="default" size="100%">gas chromatography/mass spectrometry</style></keyword><keyword><style  face="normal" font="default" size="100%">phenolics</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><publisher><style face="normal" font="default" size="100%">WALTER DE GRUYTER &amp; CO</style></publisher><pub-location><style face="normal" font="default" size="100%">GENTHINER STRASSE 13, D-10785 BERLIN, GERMANY</style></pub-location><volume><style face="normal" font="default" size="100%">51</style></volume><pages><style face="normal" font="default" size="100%">219-224</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The monomeric composition of suberins from Spanish Quercus suber was determined by gas chromatography/mass spectrometry in the product of depolymerization of free extractives cork with sodium methoxide-methanol. 1-Alkanols (C-20-C-26)(1.8-6.4%), alkanoic acids (C-20-C-24)(2.2-8.1%), alpha,omega-alkanedioic acids (C-16-C-24)(6.1-10.2%) and omega-hydroxy-alkanoic acids (C-20-C-26, being C-22 and C-24 the most abundant)(28.7-37.3%) are identified. The erythro- and threo-9,10-dihydroxyoctadecanedioic (5.4-7.5%), erythro- and threo-9,10,18-trihydroxyoctadecanoic (7.6-11.8%), 9,10-epoxy-18-hydroxyoctadecanoic (1.2-3.1%) and 9,10-epoxy-octadecanodioic acids (1.0-4.4%) and the unsaturated 18-hydroxy-9-octadecenoic (8.1-11.5%) and 9-octadecenedioic (1.5-2.4%) acids are also important components. Ferulic acid (5.3-9.1%) is the main phenolic component of suberin. The studied samples differ in the relative proportion of the different monomers.</style></abstract></record></records></xml>