Publicação
Influence of solvent on the antioxidant and antimicrobial properties of walnut (Juglans regia L.) green husk extracts
| Resumo: | Walnut green husk is an agro-forest waste generated in the walnut (Juglans regia L.) harvest that could be valued as a source of natural compounds with antioxidant and antimicrobial properties. At this respect, the effect of the solvent (water, methanol, ethanol and 50% aqueous solutions of methanol and ethanol) on the extraction yields and extracts bioactive properties was analysed. Total phenols content of the extracts was determined by the Folin–Ciocalteau method. Extract antioxidant activity was evaluated using the reducing power assay and by the ability of the extracts to scavenge the DPPH radical. The scavenging effect of the aqueous extracts on the nitric oxide radical was also evaluated. The highest extraction yield was achieved with water (44.11%) and high bioactive potential was shown by the samples extracted with water/ethanol (1:1) (84.46 mg GAE/g extract; EC50 = 0.95 mg/mL for reducing power and EC50 = 0.33 mg/mL for DPPH assay). All the antioxidant properties analysed showed a concentrationdependent activity. The antimicrobial activity of the aqueous extracts was assessed and showed ability to inhibit the growth of Gram positive bacteria. The results obtained demonstrated the potential of the walnut green husk as an economical source of antioxidant and antimicrobial agents. |
|---|---|
| Autores principais: | Fernández-Agulló, Adela |
| Outros Autores: | Pereira, Etelvina; Freire, M. Sonia; Valentão, Patrícia; Andrade, Paula B.; González-Álvarez, Julia; Pereira, J.A. |
| Assunto: | Walnut green husk Solvent extraction Total phenols content Antioxidant activity Antimicrobial activity |
| Ano: | 2013 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso restrito |
| Instituição associada: | Instituto Politécnico de Bragança |
| Idioma: | inglês |
| Origem: | Biblioteca Digital do IPB |
| _version_ | 1863851378255855616 |
|---|---|
| author | Fernández-Agulló, Adela |
| author2 | Pereira, Etelvina Freire, M. Sonia Valentão, Patrícia Andrade, Paula B. González-Álvarez, Julia Pereira, J.A. |
| author2_role | author author author author author author |
| author_facet | Fernández-Agulló, Adela Pereira, Etelvina Freire, M. Sonia Valentão, Patrícia Andrade, Paula B. González-Álvarez, Julia Pereira, J.A. |
| author_role | author |
| contributor_name_str_mv | Biblioteca Digital do IPB |
| country_str | PT |
| creators_json_str | [{\"Person.name\":\"Fernández-Agulló, Adela\"},{\"Person.name\":\"Pereira, Etelvina\"},{\"Person.name\":\"Freire, M. Sonia\"},{\"Person.name\":\"Valentão, Patrícia\"},{\"Person.name\":\"Andrade, Paula B.\"},{\"Person.name\":\"González-Álvarez, Julia\"},{\"Person.name\":\"Pereira, J.A.\",\"Person.identifier.orcid\":\"0000-0002-2260-0600\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | Biblioteca Digital do IPB |
| datacite.creators.creator.creatorName.fl_str_mv | Fernández-Agulló, Adela Pereira, Etelvina Freire, M. Sonia Valentão, Patrícia Andrade, Paula B. González-Álvarez, Julia Pereira, J.A. |
| datacite.date.Accepted.fl_str_mv | 2013-01-01T00:00:00Z |
| datacite.date.available.fl_str_mv | 2016-12-21T09:51:52Z |
| datacite.date.embargoed.fl_str_mv | 2016-12-21T09:51:52Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_16ec |
| datacite.subjects.subject.fl_str_mv | Walnut green husk Solvent extraction Total phenols content Antioxidant activity Antimicrobial activity |
| datacite.titles.title.fl_str_mv | Influence of solvent on the antioxidant and antimicrobial properties of walnut (Juglans regia L.) green husk extracts |
| dc.contributor.none.fl_str_mv | Biblioteca Digital do IPB |
| dc.creator.none.fl_str_mv | Fernández-Agulló, Adela Pereira, Etelvina Freire, M. Sonia Valentão, Patrícia Andrade, Paula B. González-Álvarez, Julia Pereira, J.A. |
| dc.date.Accepted.fl_str_mv | 2013-01-01T00:00:00Z |
| dc.date.available.fl_str_mv | 2016-12-21T09:51:52Z |
| dc.date.embargoed.fl_str_mv | 2016-12-21T09:51:52Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | http://hdl.handle.net/10198/13628 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | Elsevier |
| dc.rights.cclincense.fl_str_mv | http://creativecommons.org/licenses/by/4.0/ |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_16ec |
| dc.subject.none.fl_str_mv | Walnut green husk Solvent extraction Total phenols content Antioxidant activity Antimicrobial activity |
| dc.title.fl_str_mv | Influence of solvent on the antioxidant and antimicrobial properties of walnut (Juglans regia L.) green husk extracts |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_6501 |
| description | Walnut green husk is an agro-forest waste generated in the walnut (Juglans regia L.) harvest that could be valued as a source of natural compounds with antioxidant and antimicrobial properties. At this respect, the effect of the solvent (water, methanol, ethanol and 50% aqueous solutions of methanol and ethanol) on the extraction yields and extracts bioactive properties was analysed. Total phenols content of the extracts was determined by the Folin–Ciocalteau method. Extract antioxidant activity was evaluated using the reducing power assay and by the ability of the extracts to scavenge the DPPH radical. The scavenging effect of the aqueous extracts on the nitric oxide radical was also evaluated. The highest extraction yield was achieved with water (44.11%) and high bioactive potential was shown by the samples extracted with water/ethanol (1:1) (84.46 mg GAE/g extract; EC50 = 0.95 mg/mL for reducing power and EC50 = 0.33 mg/mL for DPPH assay). All the antioxidant properties analysed showed a concentrationdependent activity. The antimicrobial activity of the aqueous extracts was assessed and showed ability to inhibit the growth of Gram positive bacteria. The results obtained demonstrated the potential of the walnut green husk as an economical source of antioxidant and antimicrobial agents. |
| dirty | 0 |
| eu_rights_str_mv | restrictedAccess |
| format | article |
| fulltext.url.fl_str_mv | https://bibliotecadigital.ipb.pt/bitstreams/4b547a3a-b062-49fc-be77-549361dc85c1/download |
| id | ipb_4f54f3274e8e0cd464a68d7efbd4e868 |
| identifier.url.fl_str_mv | http://hdl.handle.net/10198/13628 |
| instacron_str | ipb |
| institution | Instituto Politécnico de Bragança |
| instname_str | Instituto Politécnico de Bragança |
| language | eng |
| network_acronym_str | ipb |
| network_name_str | Biblioteca Digital do IPB |
| oai_identifier_str | oai:bibliotecadigital.ipb.pt:10198/13628 |
| organization_str_mv | urn:organizationAcronym:ipb |
| person_str_mv | Fernández-Agulló, Adela Pereira, Etelvina Freire, M. Sonia Valentão, Patrícia Andrade, Paula B. González-Álvarez, Julia Pereira, J.A. Pereira, J.A. https://www.ciencia-id.pt/611F-80B2-A7C1 611F-80B2-A7C1 http://orcid.org/0000-0002-2260-0600 0000-0002-2260-0600 |
| publishDate | 2013 |
| publisher.none.fl_str_mv | Elsevier |
| reponame_str | Biblioteca Digital do IPB |
| repository_id_str | urn:repositoryAcronym:ipb |
| service_str_mv | urn:repositoryAcronym:ipb |
| spelling | engElsevierpt_PTWalnut green husk is an agro-forest waste generated in the walnut (Juglans regia L.) harvest that could be valued as a source of natural compounds with antioxidant and antimicrobial properties. At this respect, the effect of the solvent (water, methanol, ethanol and 50% aqueous solutions of methanol and ethanol) on the extraction yields and extracts bioactive properties was analysed. Total phenols content of the extracts was determined by the Folin–Ciocalteau method. Extract antioxidant activity was evaluated using the reducing power assay and by the ability of the extracts to scavenge the DPPH radical. The scavenging effect of the aqueous extracts on the nitric oxide radical was also evaluated. The highest extraction yield was achieved with water (44.11%) and high bioactive potential was shown by the samples extracted with water/ethanol (1:1) (84.46 mg GAE/g extract; EC50 = 0.95 mg/mL for reducing power and EC50 = 0.33 mg/mL for DPPH assay). All the antioxidant properties analysed showed a concentrationdependent activity. The antimicrobial activity of the aqueous extracts was assessed and showed ability to inhibit the growth of Gram positive bacteria. The results obtained demonstrated the potential of the walnut green husk as an economical source of antioxidant and antimicrobial agents.application/pdfpt_PTInfluence of solvent on the antioxidant and antimicrobial properties of walnut (Juglans regia L.) green husk extractsFernández-Agulló, AdelaPereira, EtelvinaFreire, M. SoniaValentão, PatríciaAndrade, Paula B.González-Álvarez, JuliaPersonalPereira, J.A.DSpacehttp://dspace.org/items/7932162e-a2da-4913-b00d-17babbe51857DSpacehttp://dspace.org/items/7932162e-a2da-4913-b00d-17babbe51857PereiraJosé AlbertoCiência IDhttps://www.ciencia-id.pt611F-80B2-A7C1ORCIDhttp://orcid.org0000-0002-2260-0600Researcher IDhttps://www.researcherid.comL-6798-2014Scopus Author IDhttps://www.scopus.com57204366348HostingInstitutionOrganizationalBiblioteca Digital do IPBe-mailmailto:dspace@ipb.ptdspace@ipb.ptISSNIsPartOf0926-6690DOIIsPartOf10.1016/j.indcrop.2012.05.0212016-12-21T09:51:52Z20132013-01-01T00:00:00ZHandlehttp://hdl.handle.net/10198/13628http://purl.org/coar/access_right/c_16ecrestricted accessWalnut green huskSolvent extractionTotal phenols contentAntioxidant activityAntimicrobial activity395580 bytesliteraturehttp://purl.org/coar/resource_type/c_6501journal article2013http://creativecommons.org/licenses/by/4.0/http://purl.org/coar/access_right/c_16ecapplication/pdffulltexthttps://bibliotecadigital.ipb.pt/bitstreams/4b547a3a-b062-49fc-be77-549361dc85c1/downloadIndustrial Crops and Products42126132 |
| spellingShingle | Influence of solvent on the antioxidant and antimicrobial properties of walnut (Juglans regia L.) green husk extracts Fernández-Agulló, Adela Walnut green husk Solvent extraction Total phenols content Antioxidant activity Antimicrobial activity |
| subject.fl_str_mv | Walnut green husk Solvent extraction Total phenols content Antioxidant activity Antimicrobial activity |
| title | Influence of solvent on the antioxidant and antimicrobial properties of walnut (Juglans regia L.) green husk extracts |
| title_full | Influence of solvent on the antioxidant and antimicrobial properties of walnut (Juglans regia L.) green husk extracts |
| title_fullStr | Influence of solvent on the antioxidant and antimicrobial properties of walnut (Juglans regia L.) green husk extracts |
| title_full_unstemmed | Influence of solvent on the antioxidant and antimicrobial properties of walnut (Juglans regia L.) green husk extracts |
| title_short | Influence of solvent on the antioxidant and antimicrobial properties of walnut (Juglans regia L.) green husk extracts |
| title_sort | Influence of solvent on the antioxidant and antimicrobial properties of walnut (Juglans regia L.) green husk extracts |
| topic | Walnut green husk Solvent extraction Total phenols content Antioxidant activity Antimicrobial activity |
| topic_facet | Walnut green husk Solvent extraction Total phenols content Antioxidant activity Antimicrobial activity |
| url | http://hdl.handle.net/10198/13628 |
| visible | 1 |