Determination of phenolic compounds of grape skins during ripening by NIR spectroscopy

[EN] The potential of near infrared spectroscopy (NIRS) to determine the content of phenolic compounds in red grapes has been evaluated. The near infrared spectra of intact grapes and grape skins throughout maturity were recorded using a fibre-optic probe and a transport quartz cup, respectively. Re...

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Detalhes bibliográficos
Autores: Ferrer-Gallego, Raúl, Hernández-Hierro, José Miguel, Rivas Gonzalo, Julián C., Escribano Bailón, María Teresa
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2011
País:España
Recursos:Universidad de Salamanca (USAL)
Repositorio:GREDOS. Repositorio Institucional de la Universidad de Salamanca
OAI Identifier:oai:gredos.usal.es:10366/141096
Acesso em linha:http://hdl.handle.net/10366/141096
Access Level:acceso abierto
Palavra-chave:Polyphenols
Red grapes
Grape skins
Near infrared spectroscopy
Chemometrics
2417.17 Nutrición Vegetal
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spelling Determination of phenolic compounds of grape skins during ripening by NIR spectroscopyFerrer-Gallego, RaúlHernández-Hierro, José MiguelRivas Gonzalo, Julián C.Escribano Bailón, María TeresaPolyphenolsRed grapesGrape skinsNear infrared spectroscopyChemometrics2417.17 Nutrición Vegetal[EN] The potential of near infrared spectroscopy (NIRS) to determine the content of phenolic compounds in red grapes has been evaluated. The near infrared spectra of intact grapes and grape skins throughout maturity were recorded using a fibre-optic probe and a transport quartz cup, respectively. Reference values of phenolic compounds were obtained by HPLC-DAD-MS. Modified Partial Least Squares (MPLS) regression was used to develop the quantitative models for flavanols, flavonols, phenolic acids, anthocyanins and total phenolic compounds. The procedure reported here seems to have an excellent potential for fast and reasonable cost analysis. The results of this work show that the models developed using NIRS technology together with chemometric tools allow the quantification of total phenolic compounds and the families of main phenolic compounds in grape skins throughout maturation. The validation of these models showed the best results for the determination of flavonols (differences between HPLC and NIRS of 7.8% using grapes and 10.7% using grape skins) in the external validation procedure. Good results in the external validation were also obtained for the determination of total phenolic compounds (differences of 11.7% using grapes and 14.7% using grape skins). The best results were generally obtained recording the spectra directly in intact grapes.202020202011info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10366/141096reponame:GREDOS. Repositorio Institucional de la Universidad de Salamancainstname:Universidad de Salamanca (USAL)InglésAttribution-NonCommercial-NoDerivatives 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:gredos.usal.es:10366/1410962026-06-07T06:28:51Z
dc.title.none.fl_str_mv Determination of phenolic compounds of grape skins during ripening by NIR spectroscopy
title Determination of phenolic compounds of grape skins during ripening by NIR spectroscopy
spellingShingle Determination of phenolic compounds of grape skins during ripening by NIR spectroscopy
Ferrer-Gallego, Raúl
Polyphenols
Red grapes
Grape skins
Near infrared spectroscopy
Chemometrics
2417.17 Nutrición Vegetal
title_short Determination of phenolic compounds of grape skins during ripening by NIR spectroscopy
title_full Determination of phenolic compounds of grape skins during ripening by NIR spectroscopy
title_fullStr Determination of phenolic compounds of grape skins during ripening by NIR spectroscopy
title_full_unstemmed Determination of phenolic compounds of grape skins during ripening by NIR spectroscopy
title_sort Determination of phenolic compounds of grape skins during ripening by NIR spectroscopy
dc.creator.none.fl_str_mv Ferrer-Gallego, Raúl
Hernández-Hierro, José Miguel
Rivas Gonzalo, Julián C.
Escribano Bailón, María Teresa
author Ferrer-Gallego, Raúl
author_facet Ferrer-Gallego, Raúl
Hernández-Hierro, José Miguel
Rivas Gonzalo, Julián C.
Escribano Bailón, María Teresa
author_role author
author2 Hernández-Hierro, José Miguel
Rivas Gonzalo, Julián C.
Escribano Bailón, María Teresa
author2_role author
author
author
dc.subject.none.fl_str_mv Polyphenols
Red grapes
Grape skins
Near infrared spectroscopy
Chemometrics
2417.17 Nutrición Vegetal
topic Polyphenols
Red grapes
Grape skins
Near infrared spectroscopy
Chemometrics
2417.17 Nutrición Vegetal
description [EN] The potential of near infrared spectroscopy (NIRS) to determine the content of phenolic compounds in red grapes has been evaluated. The near infrared spectra of intact grapes and grape skins throughout maturity were recorded using a fibre-optic probe and a transport quartz cup, respectively. Reference values of phenolic compounds were obtained by HPLC-DAD-MS. Modified Partial Least Squares (MPLS) regression was used to develop the quantitative models for flavanols, flavonols, phenolic acids, anthocyanins and total phenolic compounds. The procedure reported here seems to have an excellent potential for fast and reasonable cost analysis. The results of this work show that the models developed using NIRS technology together with chemometric tools allow the quantification of total phenolic compounds and the families of main phenolic compounds in grape skins throughout maturation. The validation of these models showed the best results for the determination of flavonols (differences between HPLC and NIRS of 7.8% using grapes and 10.7% using grape skins) in the external validation procedure. Good results in the external validation were also obtained for the determination of total phenolic compounds (differences of 11.7% using grapes and 14.7% using grape skins). The best results were generally obtained recording the spectra directly in intact grapes.
publishDate 2011
dc.date.none.fl_str_mv 2011
2020
2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10366/141096
url http://hdl.handle.net/10366/141096
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv Attribution-NonCommercial-NoDerivatives 4.0 Internacional
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution-NonCommercial-NoDerivatives 4.0 Internacional
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:GREDOS. Repositorio Institucional de la Universidad de Salamanca
instname:Universidad de Salamanca (USAL)
instname_str Universidad de Salamanca (USAL)
reponame_str GREDOS. Repositorio Institucional de la Universidad de Salamanca
collection GREDOS. Repositorio Institucional de la Universidad de Salamanca
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301629

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