Evaluation of respiratory parameters in minimally processed lettuce grown under organic or conventional system

Detalhes bibliográficos
Autor(a) principal: Mello,Júlio César
Data de Publicação: 2010
Outros Autores: Dietrich,Renato, Probst,Luiz Fernando Dias, Amante,Edna Regina
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista Ceres
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0034-737X2010000600005
Resumo: The increased preference for minimally processed vegetables has been attributed to the health benefits associated with fresh produce and the demand for ready-to-eat salads. In this paper, lettuce (Lactuca sativa L.) was evaluated for the effects of different cropping systems on the respiratory properties. Lettuce was packaged in low density polyethylene bags and stored in a refrigerator at 4 ºC. The concentration of carbon dioxide and oxygen inside the package was monitored during the storage at zero, three, six, eight, ten and twelve days by gas chromatography. Dry matter variation was measured gravimetrically up to day fourteen of storage. Values of respiratory rate for conventional lettuce increased from day 1 to 3 and remained low, while respiratory rate of the organic lettuce increased three-fold up to day 8, stabilizing at a high level. Variation in dry matter during storage also resulted from differences between the two cultivation systems. The highest content of dry matter was achieved by organic lettuce.
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spelling Evaluation of respiratory parameters in minimally processed lettuce grown under organic or conventional systemPost harveststorageshelf lifeThe increased preference for minimally processed vegetables has been attributed to the health benefits associated with fresh produce and the demand for ready-to-eat salads. In this paper, lettuce (Lactuca sativa L.) was evaluated for the effects of different cropping systems on the respiratory properties. Lettuce was packaged in low density polyethylene bags and stored in a refrigerator at 4 ºC. The concentration of carbon dioxide and oxygen inside the package was monitored during the storage at zero, three, six, eight, ten and twelve days by gas chromatography. Dry matter variation was measured gravimetrically up to day fourteen of storage. Values of respiratory rate for conventional lettuce increased from day 1 to 3 and remained low, while respiratory rate of the organic lettuce increased three-fold up to day 8, stabilizing at a high level. Variation in dry matter during storage also resulted from differences between the two cultivation systems. The highest content of dry matter was achieved by organic lettuce.Universidade Federal de Viçosa2010-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0034-737X2010000600005Revista Ceres v.57 n.6 2010reponame:Revista Ceresinstname:Universidade Federal de Viçosa (UFV)instacron:UFV10.1590/S0034-737X2010000600005info:eu-repo/semantics/openAccessMello,Júlio CésarDietrich,RenatoProbst,Luiz Fernando DiasAmante,Edna Reginaeng2012-03-23T00:00:00ZRevista
dc.title.none.fl_str_mv Evaluation of respiratory parameters in minimally processed lettuce grown under organic or conventional system
title Evaluation of respiratory parameters in minimally processed lettuce grown under organic or conventional system
spellingShingle Evaluation of respiratory parameters in minimally processed lettuce grown under organic or conventional system
Mello,Júlio César
Post harvest
storage
shelf life
title_short Evaluation of respiratory parameters in minimally processed lettuce grown under organic or conventional system
title_full Evaluation of respiratory parameters in minimally processed lettuce grown under organic or conventional system
title_fullStr Evaluation of respiratory parameters in minimally processed lettuce grown under organic or conventional system
title_full_unstemmed Evaluation of respiratory parameters in minimally processed lettuce grown under organic or conventional system
title_sort Evaluation of respiratory parameters in minimally processed lettuce grown under organic or conventional system
author Mello,Júlio César
author_facet Mello,Júlio César
Dietrich,Renato
Probst,Luiz Fernando Dias
Amante,Edna Regina
author_role author
author2 Dietrich,Renato
Probst,Luiz Fernando Dias
Amante,Edna Regina
author2_role author
author
author
dc.contributor.author.fl_str_mv Mello,Júlio César
Dietrich,Renato
Probst,Luiz Fernando Dias
Amante,Edna Regina
dc.subject.por.fl_str_mv Post harvest
storage
shelf life
topic Post harvest
storage
shelf life
dc.description.none.fl_txt_mv The increased preference for minimally processed vegetables has been attributed to the health benefits associated with fresh produce and the demand for ready-to-eat salads. In this paper, lettuce (Lactuca sativa L.) was evaluated for the effects of different cropping systems on the respiratory properties. Lettuce was packaged in low density polyethylene bags and stored in a refrigerator at 4 ºC. The concentration of carbon dioxide and oxygen inside the package was monitored during the storage at zero, three, six, eight, ten and twelve days by gas chromatography. Dry matter variation was measured gravimetrically up to day fourteen of storage. Values of respiratory rate for conventional lettuce increased from day 1 to 3 and remained low, while respiratory rate of the organic lettuce increased three-fold up to day 8, stabilizing at a high level. Variation in dry matter during storage also resulted from differences between the two cultivation systems. The highest content of dry matter was achieved by organic lettuce.
description The increased preference for minimally processed vegetables has been attributed to the health benefits associated with fresh produce and the demand for ready-to-eat salads. In this paper, lettuce (Lactuca sativa L.) was evaluated for the effects of different cropping systems on the respiratory properties. Lettuce was packaged in low density polyethylene bags and stored in a refrigerator at 4 ºC. The concentration of carbon dioxide and oxygen inside the package was monitored during the storage at zero, three, six, eight, ten and twelve days by gas chromatography. Dry matter variation was measured gravimetrically up to day fourteen of storage. Values of respiratory rate for conventional lettuce increased from day 1 to 3 and remained low, while respiratory rate of the organic lettuce increased three-fold up to day 8, stabilizing at a high level. Variation in dry matter during storage also resulted from differences between the two cultivation systems. The highest content of dry matter was achieved by organic lettuce.
publishDate 2010
dc.date.none.fl_str_mv 2010-12-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0034-737X2010000600005
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0034-737X2010000600005
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0034-737X2010000600005
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Universidade Federal de Viçosa
publisher.none.fl_str_mv Universidade Federal de Viçosa
dc.source.none.fl_str_mv Revista Ceres v.57 n.6 2010
reponame:Revista Ceres
instname:Universidade Federal de Viçosa (UFV)
instacron:UFV
instname_str Universidade Federal de Viçosa (UFV)
instacron_str UFV
institution UFV
reponame_str Revista Ceres
collection Revista Ceres
repository.name.fl_str_mv
repository.mail.fl_str_mv
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