Publicação
Nitrogen vs argon: what is the most effective atmosphere for shelf-life extension of buckler sorrel leaves?
| Resumo: | Buckler sorrel (Rumex induratus Boiss. & Reut.) is an underutilized leafy vegetable with peculiar sensory properties and potential as a gourmet food. In the food industry, different packaging methods have been used for shelf-life extension, but it is important to know how the quality of minimally processed vegetable is affected by these treatments. Recently, nitrogen and argon have been used for food packaging. Nitrogen is low soluble in water and other food constituents and does not support the growth of aerobic microbes. In turn, argon is biochemically active and appears to interfere with enzymatic oxygen receptor sites. In this study, modified atmospheres enriched with nitrogen and argon were evaluated for shelf-life extension of buckler sorrel leaves. Wild samples were gathered in Bragança, Portugal, considering local consumers’ sites and criteria. Healthy and undamaged leaves were selected, rinsed in tap water, and a portion was immediately analyzed (non-stored control). The remaining fresh material was packaged in polyethylene bags under nitrogen- and argon-enriched atmospheres and a conventional control atmosphere (air). All packaged samples were stored at 4 ºC for 12 days and then analyzed. The headspace gas composition was monitored during storage. Different quality attributes were evaluated, including visual (colour), nutritional (macronutrients, individual sugars and fatty acids) and bioactive (hydrophilic and lipophilic molecules and antioxidant properties) parameters. Different statistical tools were used; the one-way analysis of variance (ANO VA) was applied for analyse the differences among treatments and a linear discriminant analysis (LDA ) was used to evaluate the effects on the overall postharvest quality. The argon-enriched atmosphere better prevent the samples yellowing. The proximate composition did not change significantly during storage. Samples in control atmosphere revealed higher protein and ash contents and lower levels of lipids. The non-stored control samples presented the higher amounts of fructose, glucose and trehalose. The storage time increased the palmitic acid levels and decreased the content in α-linolenic and linoleic acids. The γ- e δ-tocopherols were higher after the 12 days of cold storage. Probably, the synthesis of these lipophilic compounds was a plant strategy to fight against the abiotic stress induced by storage. Higher levels of total phenolics and flavonoids and increased reducing power and β-carotene bleaching inhibition capacity were also found in the stored control samples. Once again, this result may be attributed to the intrinsic plant-protection mechanisms. Overall, the argon atmosphere was more suitable for quality preservation and shelf-life extension of buckler sorrel. |
|---|---|
| Autores principais: | Pinela, José |
| Outros Autores: | Barros, Lillian; Antonio, Amilcar L.; Barreira, João C.M.; Carvalho, Ana Maria; Oliveira, Beatriz; Ferreira, Isabel C.F.R. |
| Ano: | 2016 |
| País: | Portugal |
| Tipo de documento: | documento de conferência |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Instituto Politécnico de Bragança |
| Idioma: | inglês |
| Origem: | Biblioteca Digital do IPB |
| _version_ | 1867172780945965056 |
|---|---|
| author | Pinela, José |
| author2 | Barros, Lillian Antonio, Amilcar L. Barreira, João C.M. Carvalho, Ana Maria Oliveira, Beatriz Ferreira, Isabel C.F.R. |
| author2_role | author author author author author author |
| author_facet | Pinela, José Barros, Lillian Antonio, Amilcar L. Barreira, João C.M. Carvalho, Ana Maria Oliveira, Beatriz Ferreira, Isabel C.F.R. |
| author_role | author |
| contributor_name_str_mv | Biblioteca Digital do IPB |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Pinela, José\",\"Person.identifier.orcid\":\"0000-0001-7523-1637\"},{\"Person.name\":\"Barros, Lillian\",\"Person.identifier.orcid\":\"0000-0002-9050-5189\"},{\"Person.name\":\"Antonio, Amilcar L.\",\"Person.identifier.orcid\":\"0000-0001-8271-9964\"},{\"Person.name\":\"Barreira, João C.M.\",\"Person.identifier.orcid\":\"0000-0003-1233-0990\"},{\"Person.name\":\"Carvalho, Ana Maria\",\"Person.identifier.orcid\":\"0000-0001-5508-5935\"},{\"Person.name\":\"Oliveira, Beatriz\"},{\"Person.name\":\"Ferreira, Isabel C.F.R.\",\"Person.identifier.orcid\":\"0000-0003-4910-4882\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | Biblioteca Digital do IPB |
| datacite.creators.creator.creatorName.fl_str_mv | Pinela, José Barros, Lillian Antonio, Amilcar L. Barreira, João C.M. Carvalho, Ana Maria Oliveira, Beatriz Ferreira, Isabel C.F.R. |
| datacite.date.Accepted.fl_str_mv | 2016-01-01T00:00:00Z |
| datacite.date.available.fl_str_mv | 2016-09-21T10:39:51Z |
| datacite.date.embargoed.fl_str_mv | 2016-09-21T10:39:51Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| datacite.titles.title.fl_str_mv | Nitrogen vs argon: what is the most effective atmosphere for shelf-life extension of buckler sorrel leaves? |
| dc.contributor.none.fl_str_mv | Biblioteca Digital do IPB |
| dc.creator.none.fl_str_mv | Pinela, José Barros, Lillian Antonio, Amilcar L. Barreira, João C.M. Carvalho, Ana Maria Oliveira, Beatriz Ferreira, Isabel C.F.R. |
| dc.date.Accepted.fl_str_mv | 2016-01-01T00:00:00Z |
| dc.date.available.fl_str_mv | 2016-09-21T10:39:51Z |
| dc.date.embargoed.fl_str_mv | 2016-09-21T10:39:51Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | http://hdl.handle.net/10198/13276 |
| dc.language.none.fl_str_mv | eng |
| 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_abf2 |
| dc.title.fl_str_mv | Nitrogen vs argon: what is the most effective atmosphere for shelf-life extension of buckler sorrel leaves? |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_c94f |
| description | Buckler sorrel (Rumex induratus Boiss. & Reut.) is an underutilized leafy vegetable with peculiar sensory properties and potential as a gourmet food. In the food industry, different packaging methods have been used for shelf-life extension, but it is important to know how the quality of minimally processed vegetable is affected by these treatments. Recently, nitrogen and argon have been used for food packaging. Nitrogen is low soluble in water and other food constituents and does not support the growth of aerobic microbes. In turn, argon is biochemically active and appears to interfere with enzymatic oxygen receptor sites. In this study, modified atmospheres enriched with nitrogen and argon were evaluated for shelf-life extension of buckler sorrel leaves. Wild samples were gathered in Bragança, Portugal, considering local consumers’ sites and criteria. Healthy and undamaged leaves were selected, rinsed in tap water, and a portion was immediately analyzed (non-stored control). The remaining fresh material was packaged in polyethylene bags under nitrogen- and argon-enriched atmospheres and a conventional control atmosphere (air). All packaged samples were stored at 4 ºC for 12 days and then analyzed. The headspace gas composition was monitored during storage. Different quality attributes were evaluated, including visual (colour), nutritional (macronutrients, individual sugars and fatty acids) and bioactive (hydrophilic and lipophilic molecules and antioxidant properties) parameters. Different statistical tools were used; the one-way analysis of variance (ANO VA) was applied for analyse the differences among treatments and a linear discriminant analysis (LDA ) was used to evaluate the effects on the overall postharvest quality. The argon-enriched atmosphere better prevent the samples yellowing. The proximate composition did not change significantly during storage. Samples in control atmosphere revealed higher protein and ash contents and lower levels of lipids. The non-stored control samples presented the higher amounts of fructose, glucose and trehalose. The storage time increased the palmitic acid levels and decreased the content in α-linolenic and linoleic acids. The γ- e δ-tocopherols were higher after the 12 days of cold storage. Probably, the synthesis of these lipophilic compounds was a plant strategy to fight against the abiotic stress induced by storage. Higher levels of total phenolics and flavonoids and increased reducing power and β-carotene bleaching inhibition capacity were also found in the stored control samples. Once again, this result may be attributed to the intrinsic plant-protection mechanisms. Overall, the argon atmosphere was more suitable for quality preservation and shelf-life extension of buckler sorrel. |
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| identifier.url.fl_str_mv | http://hdl.handle.net/10198/13276 |
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| institution | Instituto Politécnico de Bragança |
| instname_str | Instituto Politécnico de Bragança |
| language | eng |
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| person_str_mv | Pinela, José Pinela, José https://www.ciencia-id.pt/771C-2B43-B108 771C-2B43-B108 http://orcid.org/0000-0001-7523-1637 0000-0001-7523-1637 Barros, Lillian Barros, Lillian https://www.ciencia-id.pt/9616-35CB-D001 9616-35CB-D001 http://orcid.org/0000-0002-9050-5189 0000-0002-9050-5189 Antonio, Amilcar L. Antonio, Amilcar L. https://www.ciencia-id.pt/1014-5259-DE86 1014-5259-DE86 http://orcid.org/0000-0001-8271-9964 0000-0001-8271-9964 Barreira, João C.M. Barreira, João C.M. http://orcid.org/0000-0003-1233-0990 0000-0003-1233-0990 Carvalho, Ana Maria Carvalho, Ana Maria https://www.ciencia-id.pt/D31A-35AF-E2A9 D31A-35AF-E2A9 http://orcid.org/0000-0001-5508-5935 0000-0001-5508-5935 Oliveira, Beatriz Ferreira, Isabel C.F.R. Ferreira, Isabel C.F.R. https://www.ciencia-id.pt/9418-CF95-9919 9418-CF95-9919 http://orcid.org/0000-0003-4910-4882 0000-0003-4910-4882 |
| publishDate | 2016 |
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| service_str_mv | urn:repositoryAcronym:ipb |
| spelling | engpt_PTBuckler sorrel (Rumex induratus Boiss. & Reut.) is an underutilized leafy vegetable with peculiar sensory properties and potential as a gourmet food. In the food industry, different packaging methods have been used for shelf-life extension, but it is important to know how the quality of minimally processed vegetable is affected by these treatments. Recently, nitrogen and argon have been used for food packaging. Nitrogen is low soluble in water and other food constituents and does not support the growth of aerobic microbes. In turn, argon is biochemically active and appears to interfere with enzymatic oxygen receptor sites. In this study, modified atmospheres enriched with nitrogen and argon were evaluated for shelf-life extension of buckler sorrel leaves. Wild samples were gathered in Bragança, Portugal, considering local consumers’ sites and criteria. Healthy and undamaged leaves were selected, rinsed in tap water, and a portion was immediately analyzed (non-stored control). The remaining fresh material was packaged in polyethylene bags under nitrogen- and argon-enriched atmospheres and a conventional control atmosphere (air). All packaged samples were stored at 4 ºC for 12 days and then analyzed. The headspace gas composition was monitored during storage. Different quality attributes were evaluated, including visual (colour), nutritional (macronutrients, individual sugars and fatty acids) and bioactive (hydrophilic and lipophilic molecules and antioxidant properties) parameters. Different statistical tools were used; the one-way analysis of variance (ANO VA) was applied for analyse the differences among treatments and a linear discriminant analysis (LDA ) was used to evaluate the effects on the overall postharvest quality. The argon-enriched atmosphere better prevent the samples yellowing. The proximate composition did not change significantly during storage. Samples in control atmosphere revealed higher protein and ash contents and lower levels of lipids. The non-stored control samples presented the higher amounts of fructose, glucose and trehalose. The storage time increased the palmitic acid levels and decreased the content in α-linolenic and linoleic acids. The γ- e δ-tocopherols were higher after the 12 days of cold storage. Probably, the synthesis of these lipophilic compounds was a plant strategy to fight against the abiotic stress induced by storage. Higher levels of total phenolics and flavonoids and increased reducing power and β-carotene bleaching inhibition capacity were also found in the stored control samples. Once again, this result may be attributed to the intrinsic plant-protection mechanisms. Overall, the argon atmosphere was more suitable for quality preservation and shelf-life extension of buckler sorrel.application/pdfpt_PTNitrogen vs argon: what is the most effective atmosphere for shelf-life extension of buckler sorrel leaves?PersonalPinela, JoséDSpacehttp://dspace.org/items/706cd9ff-065b-4c98-98a7-5c0a9e45adc4DSpacehttp://dspace.org/items/706cd9ff-065b-4c98-98a7-5c0a9e45adc4PinelaJoséCiência IDhttps://www.ciencia-id.pt771C-2B43-B108ORCIDhttp://orcid.org0000-0001-7523-1637Researcher IDhttps://www.researcherid.comB-4466-2014Scopus Author IDhttps://www.scopus.com54392272800PersonalBarros, LillianDSpacehttp://dspace.org/items/3af07ffe-f914-48ba-a5d5-efcf70fdce01DSpacehttp://dspace.org/items/3af07ffe-f914-48ba-a5d5-efcf70fdce01BarrosLillianCiência IDhttps://www.ciencia-id.pt9616-35CB-D001ORCIDhttp://orcid.org0000-0002-9050-5189Researcher IDhttps://www.researcherid.comJ-3600-2013Researcher IDhttps://www.researcherid.comJ-3600-2013Scopus Author IDhttps://www.scopus.com35236343600Scopus Author IDhttps://www.scopus.com57194900801PersonalAntonio, Amilcar L.DSpacehttp://dspace.org/items/4b23e496-8d11-4ff5-a8ec-e1c2235e5a28DSpacehttp://dspace.org/items/4b23e496-8d11-4ff5-a8ec-e1c2235e5a28AntonioAmilcar L.Ciência IDhttps://www.ciencia-id.pt1014-5259-DE86ORCIDhttp://orcid.org0000-0001-8271-9964Researcher IDhttps://www.researcherid.comJ-1960-2014Scopus Author IDhttps://www.scopus.com44560921900PersonalBarreira, João C.M.DSpacehttp://dspace.org/items/4629b12c-39b0-4da8-8b8d-6efba5cf2d81DSpacehttp://dspace.org/items/4629b12c-39b0-4da8-8b8d-6efba5cf2d81BarreiraJoão C.M.ORCIDhttp://orcid.org0000-0003-1233-0990Researcher IDhttps://www.researcherid.comD-8269-2013Scopus Author IDhttps://www.scopus.com54895546900PersonalCarvalho, Ana MariaDSpacehttp://dspace.org/items/977f5254-f7c5-4c91-873f-2700ecd4692fDSpacehttp://dspace.org/items/977f5254-f7c5-4c91-873f-2700ecd4692fCarvalhoAna MariaCiência IDhttps://www.ciencia-id.ptD31A-35AF-E2A9ORCIDhttp://orcid.org0000-0001-5508-5935Scopus Author IDhttps://www.scopus.com20336503900Oliveira, BeatrizPersonalFerreira, Isabel C.F.R.DSpacehttp://dspace.org/items/bd0d1537-2e03-41fb-b27a-140af9c35db8DSpacehttp://dspace.org/items/bd0d1537-2e03-41fb-b27a-140af9c35db8FerreiraIsabel C.F.R.Ciência IDhttps://www.ciencia-id.pt9418-CF95-9919ORCIDhttp://orcid.org0000-0003-4910-4882Researcher IDhttps://www.researcherid.comE-8500-2013Scopus Author IDhttps://www.scopus.com36868826600HostingInstitutionOrganizationalBiblioteca Digital do IPBe-mailmailto:dspace@ipb.ptdspace@ipb.pt2016-09-21T10:39:51Z20162016-01-01T00:00:00ZHandlehttp://hdl.handle.net/10198/13276http://purl.org/coar/access_right/c_abf2open access3927359 bytesother research producthttp://purl.org/coar/resource_type/c_c94fconference object2016http://creativecommons.org/licenses/by/4.0/http://purl.org/coar/access_right/c_abf2application/pdffulltexthttps://bibliotecadigital.ipb.pt/bitstreams/5b8df21a-fcef-42f1-a08c-5efc4e5a7002/downloadInternational Conference on Safety and Innovation in Food Packaging 2016Lisboa, Portugal |
| spellingShingle | Nitrogen vs argon: what is the most effective atmosphere for shelf-life extension of buckler sorrel leaves? Pinela, José |
| status | SINGLETON |
| title | Nitrogen vs argon: what is the most effective atmosphere for shelf-life extension of buckler sorrel leaves? |
| title_full | Nitrogen vs argon: what is the most effective atmosphere for shelf-life extension of buckler sorrel leaves? |
| title_fullStr | Nitrogen vs argon: what is the most effective atmosphere for shelf-life extension of buckler sorrel leaves? |
| title_full_unstemmed | Nitrogen vs argon: what is the most effective atmosphere for shelf-life extension of buckler sorrel leaves? |
| title_short | Nitrogen vs argon: what is the most effective atmosphere for shelf-life extension of buckler sorrel leaves? |
| title_sort | Nitrogen vs argon: what is the most effective atmosphere for shelf-life extension of buckler sorrel leaves? |
| url | http://hdl.handle.net/10198/13276 |
| visible | 1 |