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Optimization and comparison of maceration and microwave extraction systems for the production of phenolic compounds from Juglans regia L. for the valorization of walnut leaves

2017Journal article Open access
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dc.contributor.authorVieira, Vanessa
dc.contributor.authorPrieto Lage, Miguel A.
dc.contributor.authorBarros, Lillian
dc.contributor.authorCoutinho, João A.P.
dc.contributor.authorFerreira, Olga
dc.contributor.authorFerreira, Isabel C.F.R.
dc.date.accessioned2018-01-25T10:00:00Z
dc.date.accessioned2018-01-29T10:39:40Z
dc.date.available2018-01-25T10:00:00Z
dc.date.available2018-01-29T10:39:40Z
dc.date.issued2017
dc.description.abstractThis study compares maceration (ME) and microwave assisted (MAE) extractions aiming to maximize the extraction of valuable compounds from Juglans regia L. leaves. An experimental design, assisted by response surface methodology, was developed to optimize the variables of the ME and MAE systems (time, temperature and ethanol-water proportion). The responses used as criteria were the quantification by HPLC-DAD (3-O-caffeoylquinic acid, quercetin 3-O-glucoside and quercetin O-pentoside), the extraction yield and the spectrophotometric results of total phenolics and flavonols. The global optimum conditions were: 112.5 min, 61.3 °C and 50.4% of ethanol for ME; and 3.0 min, 107.5 °C and 67.9% of ethanol for MAE. The solid/liquid ratio effect was studied at the optimal values showing a decreasing linear relation until 140 g/L for all criteria assessed. This study contributes to the valorization of walnut leaves as source of valuable compounds (e.g., quercetin) to be used as ingredients for the development of functional foods.pt_PT
dc.description.sponsorshipThe authors thank the Foundation for Science and Technology (FCT, Portugal) and FEDER under Programme PT2020 for financial support to CIMO (UID/AGR/00690/2013), L. Barros (SFRH/BPD/107855/2015) and V. Vieira (SFRH/BD/108487/2015) grants. To POCI-01-0145-FEDER-006984 (LA LSRE-LCM), funded by ERDF, through POCI-COMPETE2020 and FCT. To Xunta de Galicia for financial support for the post-doctoral researcher of M.A. Prieto.
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationVieira, Vanessa; Prieto, M.A.; Barros, Lillian; Coutinho, João A.P.; Ferreira, Olga; Ferreira, Isabel C.F.R. (2017). Optimization and comparison of maceration and microwave extraction systems for the production of phenolic compounds from Juglans regia L. for the valorization of walnut leaves. Industrial Crops & Products. ISSN 0926-6690. 107, p. 341-352
dc.identifier.doi10.1016/j.indcrop.2017.06.012pt_PT
dc.identifier.issn0926-6690
dc.identifier.urihttp://hdl.handle.net/10198/15075
dc.language.isoeng
dc.peerreviewedyespt_PT
dc.relationProviding industry and consumers with new alternative sources of natural additives from plant origin in the classes of preservatives and colouring agents: extraction, purification, stabilization and product development
dc.relationUsing natural deep eutectic solvents for the extraction of bioactive compounds from plant material: valorizing walnut residues through the development of bio-based semi-solid formulas for topical use
dc.titleOptimization and comparison of maceration and microwave extraction systems for the production of phenolic compounds from Juglans regia L. for the valorization of walnut leavesen_EN
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleProviding industry and consumers with new alternative sources of natural additives from plant origin in the classes of preservatives and colouring agents: extraction, purification, stabilization and product development
oaire.awardTitleUsing natural deep eutectic solvents for the extraction of bioactive compounds from plant material: valorizing walnut residues through the development of bio-based semi-solid formulas for topical use
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FAGR%2F00690%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBPD%2F107855%2F2015/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F108487%2F2015/PT
oaire.fundingStream5876
person.familyNamePrieto Lage
person.familyNameBarros
person.familyNameFerreira
person.familyNameFerreira
person.givenNameMiguel A.
person.givenNameLillian
person.givenNameOlga
person.givenNameIsabel C.F.R.
person.identifier107688
person.identifier469085
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person.identifier.ciencia-id9418-CF95-9919
person.identifier.orcid0000-0002-3513-0054
person.identifier.orcid0000-0002-9050-5189
person.identifier.orcid0000-0001-8414-3479
person.identifier.orcid0000-0003-4910-4882
person.identifier.ridG-4516-2011
person.identifier.ridJ-3600-2013
person.identifier.ridM-4567-2013
person.identifier.ridE-8500-2013
person.identifier.scopus-author-id35937495700
person.identifier.scopus-author-id35236343600
person.identifier.scopus-author-id57203083219
person.identifier.scopus-author-id36868826600
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccessen_EN
rcaap.typearticlept_PT
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