Evaluation of physical properties and oil quality of stored ja tropha (Jatropha cu rca s L.) seeds

Detalhes bibliográficos
Autor(a) principal: Sampaio, Cristiane Pires
Data de Publicação: 2012
Outros Autores: Araújo, Roberto Fontes, dos Santos, Silmara Bispo, Donzeles, Sergio Mauricio Lopes
Tipo de documento: Artigo
Idioma: por
Título da fonte: Engenharia na Agricultura
DOI: 10.13083/reveng.v20i1.268
Texto Completo: https://periodicos.ufv.br/reveng/article/view/241
Resumo: During storage several factors influence jatropha (Jatropha curcas L.) seed quality, with consequent effect on oil quality, mainly by increasing acidity due to oxidation and hydrolysis reactions. For biodiesel synthesis, high acidity is undesirable, because the formation of saponaceous material hinders separation of biodiesel from excess alcohol and glycerol, resulting in the formation of emulsions. Therefore, it is important to know the effects of storage conditions on the quality of grains, oil and biodiesel, in order to develop storage technology for these products, suitable for family farming or for the industry. Therefore, this study was done to evaluate the physical properties of seeds and oil chemistry during storage. The evaluations were done in the beginning and the end of the storage period. The results showed that the deterioration of jatropha seeds during storage was more pronounced at temperatures of 25oC or higher.
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spelling Evaluation of physical properties and oil quality of stored ja tropha (Jatropha cu rca s L.) seedsNOTA TÉCNICA: AVALIAÇÃO DAS PROPRIEDADES FÍSICAS E DA QUALIDADE DO ÓLEO DE SEMENTES DE PINHÃO-MANSO (Jatropha curcas L.) ARMAZENADASpropriedades-físicasarmazenamentopinhão-mansoDuring storage several factors influence jatropha (Jatropha curcas L.) seed quality, with consequent effect on oil quality, mainly by increasing acidity due to oxidation and hydrolysis reactions. For biodiesel synthesis, high acidity is undesirable, because the formation of saponaceous material hinders separation of biodiesel from excess alcohol and glycerol, resulting in the formation of emulsions. Therefore, it is important to know the effects of storage conditions on the quality of grains, oil and biodiesel, in order to develop storage technology for these products, suitable for family farming or for the industry. Therefore, this study was done to evaluate the physical properties of seeds and oil chemistry during storage. The evaluations were done in the beginning and the end of the storage period. The results showed that the deterioration of jatropha seeds during storage was more pronounced at temperatures of 25oC or higher.Diversos fatores podem influenciar na qualidade das sementes de pinhão-manso (Jatropha curcas L.) durante o seu armazenamento e, por conseqüência, a qualidade do óleo, sobretudo pelo aumento da acidez, devido a reações de oxidação e hidrólise. Na síntese de biodiesel, elevados índices de acidez são indesejados por ocasionar a formação de um sabonáceo e dificultar o processo de separação do biodiesel do excesso de álcool e do glicerol, produzindo emulsões. É importante que se conheça os efeitos das condições de armazenamento sobre a qualidade dos grãos, do óleo e do biodiesel, de modo a estabelecer metodologias apropriadas para a estocagem destes produtos, seja no contexto da agricultura familiar ou da indústria. Assim sendo este trabalho teve como objetivo a avaliação das propriedades físicas das sementes e químicas do óleo ao longo do armazenamento. Para isto, foi realizada, com parte das sementes, a determinação das propriedades físicas da semente, no período inicial e final do armazenamento e análises química para avaliação do óleo extraído. Os resultados mostraram que a deterioração das sementes de pinhão-manso durante o armazenamento ocorreu de forma mais acentuada para as condições de temperatura igual ou superior a 25 oC.Universidade Federal de Viçosa - UFV2012-03-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufv.br/reveng/article/view/24110.13083/reveng.v20i1.268Engineering in Agriculture; Vol. 20 No. 1 (2012); 12-18Revista Engenharia na Agricultura - REVENG; v. 20 n. 1 (2012); 12-182175-68131414-398410.13083/reveng.v20i1reponame:Engenharia na Agriculturainstname:Universidade Federal de Viçosa (UFV)instacron:UFVporhttps://periodicos.ufv.br/reveng/article/view/241/186Sampaio, Cristiane PiresAraújo, Roberto Fontesdos Santos, Silmara BispoDonzeles, Sergio Mauricio Lopesinfo:eu-repo/semantics/openAccess2023-01-19T13:00:52Zoai:ojs.periodicos.ufv.br:article/241Revistahttps://periodicos.ufv.br/revengPUBhttps://periodicos.ufv.br/reveng/oairevistaengenharianagricultura@gmail.com||andrerosa@ufv.br||tramitacao.reveng@gmail.com|| reveng@ufv.br2175-68131414-3984opendoar:2023-01-19T13:00:52Engenharia na Agricultura - Universidade Federal de Viçosa (UFV)false
dc.title.none.fl_str_mv Evaluation of physical properties and oil quality of stored ja tropha (Jatropha cu rca s L.) seeds
NOTA TÉCNICA: AVALIAÇÃO DAS PROPRIEDADES FÍSICAS E DA QUALIDADE DO ÓLEO DE SEMENTES DE PINHÃO-MANSO (Jatropha curcas L.) ARMAZENADAS
title Evaluation of physical properties and oil quality of stored ja tropha (Jatropha cu rca s L.) seeds
spellingShingle Evaluation of physical properties and oil quality of stored ja tropha (Jatropha cu rca s L.) seeds
Evaluation of physical properties and oil quality of stored ja tropha (Jatropha cu rca s L.) seeds
Sampaio, Cristiane Pires
propriedades-físicas
armazenamento
pinhão-manso
Sampaio, Cristiane Pires
propriedades-físicas
armazenamento
pinhão-manso
title_short Evaluation of physical properties and oil quality of stored ja tropha (Jatropha cu rca s L.) seeds
title_full Evaluation of physical properties and oil quality of stored ja tropha (Jatropha cu rca s L.) seeds
title_fullStr Evaluation of physical properties and oil quality of stored ja tropha (Jatropha cu rca s L.) seeds
Evaluation of physical properties and oil quality of stored ja tropha (Jatropha cu rca s L.) seeds
title_full_unstemmed Evaluation of physical properties and oil quality of stored ja tropha (Jatropha cu rca s L.) seeds
Evaluation of physical properties and oil quality of stored ja tropha (Jatropha cu rca s L.) seeds
title_sort Evaluation of physical properties and oil quality of stored ja tropha (Jatropha cu rca s L.) seeds
author Sampaio, Cristiane Pires
author_facet Sampaio, Cristiane Pires
Sampaio, Cristiane Pires
Araújo, Roberto Fontes
dos Santos, Silmara Bispo
Donzeles, Sergio Mauricio Lopes
Araújo, Roberto Fontes
dos Santos, Silmara Bispo
Donzeles, Sergio Mauricio Lopes
author_role author
author2 Araújo, Roberto Fontes
dos Santos, Silmara Bispo
Donzeles, Sergio Mauricio Lopes
author2_role author
author
author
dc.contributor.author.fl_str_mv Sampaio, Cristiane Pires
Araújo, Roberto Fontes
dos Santos, Silmara Bispo
Donzeles, Sergio Mauricio Lopes
dc.subject.por.fl_str_mv propriedades-físicas
armazenamento
pinhão-manso
topic propriedades-físicas
armazenamento
pinhão-manso
description During storage several factors influence jatropha (Jatropha curcas L.) seed quality, with consequent effect on oil quality, mainly by increasing acidity due to oxidation and hydrolysis reactions. For biodiesel synthesis, high acidity is undesirable, because the formation of saponaceous material hinders separation of biodiesel from excess alcohol and glycerol, resulting in the formation of emulsions. Therefore, it is important to know the effects of storage conditions on the quality of grains, oil and biodiesel, in order to develop storage technology for these products, suitable for family farming or for the industry. Therefore, this study was done to evaluate the physical properties of seeds and oil chemistry during storage. The evaluations were done in the beginning and the end of the storage period. The results showed that the deterioration of jatropha seeds during storage was more pronounced at temperatures of 25oC or higher.
publishDate 2012
dc.date.none.fl_str_mv 2012-03-05
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://periodicos.ufv.br/reveng/article/view/241
10.13083/reveng.v20i1.268
url https://periodicos.ufv.br/reveng/article/view/241
identifier_str_mv 10.13083/reveng.v20i1.268
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://periodicos.ufv.br/reveng/article/view/241/186
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Federal de Viçosa - UFV
publisher.none.fl_str_mv Universidade Federal de Viçosa - UFV
dc.source.none.fl_str_mv Engineering in Agriculture; Vol. 20 No. 1 (2012); 12-18
Revista Engenharia na Agricultura - REVENG; v. 20 n. 1 (2012); 12-18
2175-6813
1414-3984
10.13083/reveng.v20i1
reponame:Engenharia na Agricultura
instname:Universidade Federal de Viçosa (UFV)
instacron:UFV
instname_str Universidade Federal de Viçosa (UFV)
instacron_str UFV
institution UFV
reponame_str Engenharia na Agricultura
collection Engenharia na Agricultura
repository.name.fl_str_mv Engenharia na Agricultura - Universidade Federal de Viçosa (UFV)
repository.mail.fl_str_mv revistaengenharianagricultura@gmail.com||andrerosa@ufv.br||tramitacao.reveng@gmail.com|| reveng@ufv.br
_version_ 1822179074204762112
dc.identifier.doi.none.fl_str_mv 10.13083/reveng.v20i1.268

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