Publications

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evolution of phenolic compounds of spanish oak wood during natural seasoning. first results.low molecular weight polyphenols and ellagitannins were analyzed by hplc, and the molecular weight distribution of ellagitannins was calculated by gpc, in oak heartwood of quercus robur l., quercus petraea liebl., quercus pyrenaica wild., and quercus faginea lam., grown in spain, before and after 1 year of seasoning, in bordeaux, france. during this process, the concentrations of low molecular weight polyphenols (acids and aldehydes, benzoic and cinnamic, and coumarins) increased, and those of e ...199910564039
changes in low molecular weight phenolic compounds in spanish, french, and american oak woods during natural seasoning and toasting.the evolution of low molecular weight polyphenols in spanish oak heartwood of quercus robur,quercus petraea, quercus pyrenaica, and quercus faginea was studied by hplc, in relation to the processing of wood in barrel cooperage. the polyphenolic composition of spanish woods subjected to natural seasoning for 3 years and to the toasting process was studied in relation to those of french oak of q. robur (limousin) and q. petraea (allier) and american oak of q. alba (missouri), which are habitually ...200111308327
estimation and diversity of phylloplane mycobiota on selected plants in a mediterranean-type ecosystem in portugal.mediterranean ecosystems have not been consistently investigated as natural habitats for microbes in general, and fungi in particular. here we present the results of a survey of epiphytic mycobiota (filamentous fungi and yeasts) on the phylloplane of selected plants in the arrábida natural park, an ecosystem of mediterranean characteristics in portugal, using conventional culture-dependent isolation methods. leaves from the species acer monspessulanum and quercus faginea (deciduous trees) and ci ...200212375096
volatile compounds in spanish, french, and american oak woods after natural seasoning and toasting.the volatile composition (volatile phenols, phenolic aldehydes, furanic compounds, lactones, phenyl ketones, and other related compounds) of spanish oak heartwood of quercus robur, quercus petraea,quercus pyrenaica, and quercus faginea was studied by gas chromatography/mass spectrometry, in relation to the processing in barrels cooperage and in relation to the french oak of quercus robur (limousin) and quercus petraea (allier) and american oak of quercus alba (missouri), which are habitually use ...200313129296
volatile compounds in a spanish red wine aged in barrels made of spanish, french, and american oak wood.a red rioja wine was aged in barrels made of spanish oak wood (quercus robur, quercus petraea,quercus pyrenaica, and quercus faginea) during 21 months. the concentrations of some volatile compounds [syringaldehyde, vanillin, eugenol, maltol, guaiacol, 4-ethylphenol, cis and trans isomers of beta-methyl-gamma-octalactone, 2-furfuraldehyde, 5-methyl-2-furfuraldehyde, 5-(hydroxymethyl)-2-furfuraldehyde, and furfuryl alcohol] were studied in these wines and compared with those of the same wine aged ...200314664527
seasonal carbon storage and growth in mediterranean tree seedlings under different water conditions.in all mediterranean-type ecosystems, evergreen and deciduous trees differing in wood anatomy, growth pattern and leaf habit coexist, suggesting distinct adaptative responses to environmental constraints. this study examined the effects of summer water stress on carbon (c) storage and growth in seedlings of three coexisting mediterranean trees that differed in phenology and wood anatomy characteristics: quercus ilex subsp. ballota (desf.) samp., quercus faginea lam. and pinus halepensis l. seedl ...200919574258
assessment of phylloplane yeasts on selected mediterranean plants by fish with group- and species-specific oligonucleotide probes.a previous culture-dependent survey of phylloplane yeasts from selected mediterranean plants showed that a few species were present in high densities in almost all leaf samples, regardless of the plant type, location or sampling season. however, a few species appeared to be restricted to cistus albidus leaves, namely cryptococcus cistialbidi. here, we describe a culture-independent fish assay to detect and quantify whole yeast cells in leaf washings. after optimization, the technique was used to ...201019817863
Emission factors from residential combustion appliances burning Portuguese biomass fuels.Smoke from residential wood burning has been identified as a major contributor to air pollution, motivating detailed emission measurements under controlled conditions. A series of experiments were performed to compare the emission levels from two types of wood-stoves to those of fireplaces. Eight types of biomass were burned in the laboratory: wood from seven species of trees grown in the Portuguese forest (Pinus pinaster, Eucalyptus globulus, Quercus suber, Acacia longifolia, Quercus faginea, O ...201122027805
mutagenicity assessment of aerosols in emissions from wood combustion in portugal.polycyclic aromatic hydrocarbon (pah) extracts of fine particles (pm(2.5)) collected from combustion of seven wood species and briquettes were tested for mutagenic activities using ames test with salmonella typhimurium ta98 and ta100. the woods were pinus pinaster (maritime pine), eucalyptus globulus (eucalypt), quercus suber (cork oak), acacia longifolia (golden wattle), quercus faginea (portuguese oak), olea europea (olive), and quercus ilex rotundifolia (holm oak). burning experiments were do ...201222512998
evolution of ellagitannins in spanish, french, and american oak woods during natural seasoning and toasting.the evolution of tannins in spanish oak heartwood of quercus robur l., quercus petraea liebl.,quercus pyrenaica wild., and quercus faginea lam. was studied in relation to the processing of wood in barrel cooperage. their evolution was compared with that of french oak of q. robur (limousin, france) and q. petraea (allier, france) and american oak of quercus alba l. (missouri), which are habitually used in cooperage. two stages of process were researched: the seasoning of woods during 3 years in n ...200111513647
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