Variability of suberin composition of reproduction cork from Quercus suber throughout industrial processing
The chemical composition of suberin was studied in cork planks from three different trees of Spanish Quercus suber at four different stages of the industrial processing of first transformation stripping (a), first rest (b), boiling followed by open air rest (c1) and boiling followed by store-room rest (c2). The monomeric composition was determined by gas chromatography/mass spectrometry in the product of depolymerization of the free of extractives cork with sodium methoxide-methanol. The average concentrations of the main monomers were 1-alkanols (C20-C26) 4.17%; alkanoic acids (C20-C26) 5.99%; α, ω-alkanedioic acids (C16-C24) 6.20%; ω-hydroxy-alkanoic acids (C20-C26) 29.41%; erythro- and threo-9,10-dihydroxyoctadecanedioic acids 6.76%, erythro- and threo-9,10,18-trihydroxyoctadecanoic acids 9.50%, 9,10-epoxy-18-hydroxyoctadecanoic acid 2.72% and 9,10-epoxy-octadecanedioic acid 2.93% and ferulic acid 5.05%. Significant differences were observed between samples taken at the stripping and after boiling with store room rest, and both groups of samples differed from those picked after the other two processing stages. Ten components were selected as providing the greatest discrimination among stages 9-octadecenedioic, 18-hydroxy-9-octadecenoic, eicosanedioic and 9,10-epoxy-18-hydroxy-octadecanoic acids, tetracosanol, and five unidentified components.
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Format: | artículo biblioteca |
Language: | English |
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Walter de Gruyter
1999
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Subjects: | Quercus suber, Suberin, Cork Industrial processing, Gas chromatography/mass spectrometry, Fatty and hydroxy-fatty acids, Epoxy acids, Fatty alcohols, Phenolics, |
Online Access: | http://hdl.handle.net/20.500.12792/5938 http://hdl.handle.net/10261/291384 |
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dig-inia-es-10261-2913842023-02-20T07:17:37Z Variability of suberin composition of reproduction cork from Quercus suber throughout industrial processing Conde, E. García-Vallejo, M. C. Cadahía, E. Quercus suber Suberin Cork Industrial processing Gas chromatography/mass spectrometry Fatty and hydroxy-fatty acids Epoxy acids Fatty alcohols Phenolics The chemical composition of suberin was studied in cork planks from three different trees of Spanish Quercus suber at four different stages of the industrial processing of first transformation stripping (a), first rest (b), boiling followed by open air rest (c1) and boiling followed by store-room rest (c2). The monomeric composition was determined by gas chromatography/mass spectrometry in the product of depolymerization of the free of extractives cork with sodium methoxide-methanol. The average concentrations of the main monomers were 1-alkanols (C20-C26) 4.17%; alkanoic acids (C20-C26) 5.99%; α, ω-alkanedioic acids (C16-C24) 6.20%; ω-hydroxy-alkanoic acids (C20-C26) 29.41%; erythro- and threo-9,10-dihydroxyoctadecanedioic acids 6.76%, erythro- and threo-9,10,18-trihydroxyoctadecanoic acids 9.50%, 9,10-epoxy-18-hydroxyoctadecanoic acid 2.72% and 9,10-epoxy-octadecanedioic acid 2.93% and ferulic acid 5.05%. Significant differences were observed between samples taken at the stripping and after boiling with store room rest, and both groups of samples differed from those picked after the other two processing stages. Ten components were selected as providing the greatest discrimination among stages 9-octadecenedioic, 18-hydroxy-9-octadecenoic, eicosanedioic and 9,10-epoxy-18-hydroxy-octadecanoic acids, tetracosanol, and five unidentified components. 2023-02-20T07:17:37Z 2023-02-20T07:17:37Z 1999 artículo Holzforschung 53(1): 56-62 (1999) 0018-3830 http://hdl.handle.net/20.500.12792/5938 http://hdl.handle.net/10261/291384 10.1515/HF.1999.010 1437-434X en none Walter de Gruyter |
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Quercus suber Suberin Cork Industrial processing Gas chromatography/mass spectrometry Fatty and hydroxy-fatty acids Epoxy acids Fatty alcohols Phenolics Quercus suber Suberin Cork Industrial processing Gas chromatography/mass spectrometry Fatty and hydroxy-fatty acids Epoxy acids Fatty alcohols Phenolics |
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Quercus suber Suberin Cork Industrial processing Gas chromatography/mass spectrometry Fatty and hydroxy-fatty acids Epoxy acids Fatty alcohols Phenolics Quercus suber Suberin Cork Industrial processing Gas chromatography/mass spectrometry Fatty and hydroxy-fatty acids Epoxy acids Fatty alcohols Phenolics Conde, E. García-Vallejo, M. C. Cadahía, E. Variability of suberin composition of reproduction cork from Quercus suber throughout industrial processing |
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The chemical composition of suberin was studied in cork planks from three different trees of Spanish Quercus suber at four different stages of the industrial processing of first transformation stripping (a), first rest (b), boiling followed by open air rest (c1) and boiling followed by store-room rest (c2). The monomeric composition was determined by gas chromatography/mass spectrometry in the product of depolymerization of the free of extractives cork with sodium methoxide-methanol. The average concentrations of the main monomers were 1-alkanols (C20-C26) 4.17%; alkanoic acids (C20-C26) 5.99%; α, ω-alkanedioic acids (C16-C24) 6.20%; ω-hydroxy-alkanoic acids (C20-C26) 29.41%; erythro- and threo-9,10-dihydroxyoctadecanedioic acids 6.76%, erythro- and threo-9,10,18-trihydroxyoctadecanoic acids 9.50%, 9,10-epoxy-18-hydroxyoctadecanoic acid 2.72% and 9,10-epoxy-octadecanedioic acid 2.93% and ferulic acid 5.05%. Significant differences were observed between samples taken at the stripping and after boiling with store room rest, and both groups of samples differed from those picked after the other two processing stages. Ten components were selected as providing the greatest discrimination among stages 9-octadecenedioic, 18-hydroxy-9-octadecenoic, eicosanedioic and 9,10-epoxy-18-hydroxy-octadecanoic acids, tetracosanol, and five unidentified components. |
format |
artículo |
topic_facet |
Quercus suber Suberin Cork Industrial processing Gas chromatography/mass spectrometry Fatty and hydroxy-fatty acids Epoxy acids Fatty alcohols Phenolics |
author |
Conde, E. García-Vallejo, M. C. Cadahía, E. |
author_facet |
Conde, E. García-Vallejo, M. C. Cadahía, E. |
author_sort |
Conde, E. |
title |
Variability of suberin composition of reproduction cork from Quercus suber throughout industrial processing |
title_short |
Variability of suberin composition of reproduction cork from Quercus suber throughout industrial processing |
title_full |
Variability of suberin composition of reproduction cork from Quercus suber throughout industrial processing |
title_fullStr |
Variability of suberin composition of reproduction cork from Quercus suber throughout industrial processing |
title_full_unstemmed |
Variability of suberin composition of reproduction cork from Quercus suber throughout industrial processing |
title_sort |
variability of suberin composition of reproduction cork from quercus suber throughout industrial processing |
publisher |
Walter de Gruyter |
publishDate |
1999 |
url |
http://hdl.handle.net/20.500.12792/5938 http://hdl.handle.net/10261/291384 |
work_keys_str_mv |
AT condee variabilityofsuberincompositionofreproductioncorkfromquercussuberthroughoutindustrialprocessing AT garciavallejomc variabilityofsuberincompositionofreproductioncorkfromquercussuberthroughoutindustrialprocessing AT cadahiae variabilityofsuberincompositionofreproductioncorkfromquercussuberthroughoutindustrialprocessing |
_version_ |
1767603210096214016 |