Caracterização de frutos de genótipos de cajá-umbuzeiras : teor de fitoquímicos bioativos e potencial antioxidante
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações da UFRPE |
Texto Completo: | http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5068 |
Resumo: | The aim this work was to characterize "cajá-umbu" fruits coming from the germplasm's collection IPA (Instituto Agronômico de Pernambuco). Fruits of the 4 genotypes (G 2.2, G 2.3, G 3.1, G 3.2) were used to quantify the phytochemicals bioactive and evaluate the antioxidant potential. The polyphenols were quantified by spectrophotometric method, the ascorbic acid by titulometric method and carotenoids by chromatographic and spectrophotometric techniques. Hydroacetone, hydromethanolic and aqueous extracts were obtained using 3 extraction systems: a) sequential extraction: acetone 80%, methanol 80% and water, b) sequential extraction: water, methanol 80% and acetone 80% c) non¬sequential extraction. The isolated and combined extracts were submitted to the determination of total phenolic content, screened for their free DPPH- (1,1¬diphenyl-2-picrilhidrazil) and ABTS-+) (2,2'-azino-bis-(3-etilbenzotiazoline 6¬sulfonic acid) scavenging activity, and their effect on the linoleic acid peroxidation by the system of co-oxidation r3-carotene/acid linoleic and ferric thiocyanate method. The fruits showed significant content of polyphenols, low levels of ascorbic acid and carotenoids. The I3-carotene 5-6, 5'6'-diepoxide was the major component of genotypes G 2.2, G 2.3, G 3.1, and 5-6 epoxide lutein for G 3.2. The extraction procedure which employed acetone 80% as first solvent could extract a larger amount of total phenolic. Ali genotypes exhibited good DPPH- scavenging activity (ECSD value of 0.30 to 0.43, TEcSD value of 8.98 to 15.24 minutes, and EA value of 0.18 to 0.40), significant ABTS-+ scavenging capacity (55.56 a 120.08 IJMol TEAC.g-1) and high percentage of inhibition of peroxidation of linoleic acid (88.45 to 92.89%). In co-oxidation of linoleic acid/r3-carotene system exhibited moderate activity (56.91 to 69.41 % inhibition), showing that they are effective in blocking the onset of oxidation reaction (F1 <1), but the propagation phase, G 3.2 genotype showed higher efficiency (F2 <1). Therefore, fruits of "cajá-umbuzeiro" have bioactive compounds and good antioxidant potential that can contribute te the dietary intake of antioxidant. |
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MELO, Enayde de AlmeidaBEZERRA NETO, EgídioMACIEL, Maria Inês SucupiraSILVA, Tânia Maria Sarmento dahttp://lattes.cnpq.br/7344180962521765MOREIRA, Aldenise Chagas Curvêlo Gonçalves2016-07-26T11:34:06Z2011-02-24MOREIRA, Aldenise Chagas Curvêlo Gonçalves. Caracterização de frutos de genótipos de cajá-umbuzeiras : teor de fitoquímicos bioativos e potencial antioxidante. 2011. 123 f. Dissertação (Programa de Pós-Graduação em Ciência e Tecnologia de Alimentos) - Universidade Federal Rural de Pernambuco, Recife.http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5068The aim this work was to characterize "cajá-umbu" fruits coming from the germplasm's collection IPA (Instituto Agronômico de Pernambuco). Fruits of the 4 genotypes (G 2.2, G 2.3, G 3.1, G 3.2) were used to quantify the phytochemicals bioactive and evaluate the antioxidant potential. The polyphenols were quantified by spectrophotometric method, the ascorbic acid by titulometric method and carotenoids by chromatographic and spectrophotometric techniques. Hydroacetone, hydromethanolic and aqueous extracts were obtained using 3 extraction systems: a) sequential extraction: acetone 80%, methanol 80% and water, b) sequential extraction: water, methanol 80% and acetone 80% c) non¬sequential extraction. The isolated and combined extracts were submitted to the determination of total phenolic content, screened for their free DPPH- (1,1¬diphenyl-2-picrilhidrazil) and ABTS-+) (2,2'-azino-bis-(3-etilbenzotiazoline 6¬sulfonic acid) scavenging activity, and their effect on the linoleic acid peroxidation by the system of co-oxidation r3-carotene/acid linoleic and ferric thiocyanate method. The fruits showed significant content of polyphenols, low levels of ascorbic acid and carotenoids. The I3-carotene 5-6, 5'6'-diepoxide was the major component of genotypes G 2.2, G 2.3, G 3.1, and 5-6 epoxide lutein for G 3.2. The extraction procedure which employed acetone 80% as first solvent could extract a larger amount of total phenolic. Ali genotypes exhibited good DPPH- scavenging activity (ECSD value of 0.30 to 0.43, TEcSD value of 8.98 to 15.24 minutes, and EA value of 0.18 to 0.40), significant ABTS-+ scavenging capacity (55.56 a 120.08 IJMol TEAC.g-1) and high percentage of inhibition of peroxidation of linoleic acid (88.45 to 92.89%). In co-oxidation of linoleic acid/r3-carotene system exhibited moderate activity (56.91 to 69.41 % inhibition), showing that they are effective in blocking the onset of oxidation reaction (F1 <1), but the propagation phase, G 3.2 genotype showed higher efficiency (F2 <1). Therefore, fruits of "cajá-umbuzeiro" have bioactive compounds and good antioxidant potential that can contribute te the dietary intake of antioxidant.Com o objetivo de caracterizar frutos de genótipos de cajá-umbuzeiras cultivados no Banco de Germoplasma do IPA (Instituto Agronômico de Pernambuco), frutos de 4 genótipos (G 2.2; G 2.3; G 3.1; G 3.2) foram utilizados para quantificar principais fitoquímicos bioativos e avaliar o potencial antioxidante. Os polifenóis foram quantificados por método espectrofotométrico; o ácido ascórbico por método titulométrico e os carotenóides por técnicas• cromatográfica espectrofotométrica. Os extratos hidroacetônico, hidrometanólico e aquoso forar obtidos empregando-se 03 sistemas de extração: a) extração sequencial: acetom a 80%, metanol a 80% e água; b) extração sequencial: água, metanol a 80% e acetona a 80%; c) extração não sequencial. Os extratos isolados e combinados foram avaliados quanto ao teor de fenólicos totais, a capacidade de sequestrar o radical 1, 1-difenil-2-picrilhidrazil (DPPHe) e o radical 2,2' -azino-bis-(3-etilbenzotiazolina-6-ácido sulfônico (ABTSe+), a inibição da oxidação em sistema da co-oxidação l3-caroteno/ácido linoléico e pelo método tiocianato férrico. Os frutos apresentaram teor relevante de polifenó!s, baixos teores de ácido ascórbico e de carotenóides. O l3-caroteno-5,6-5'6'-diepóxido foi o componente majoritário dos genótipos G 2.2; G 2.3; G 3.1, e a luteína-5,6 epóxido do G 3.2. O procedimento de extração que empregou a acetona 80% como primeiro solvente conseguiu extrair maior quantidade de fenólicos totais. Todos os genótipos exibiram relevante capacidade de sequestro do radical DPPH (ECsD de 0,30 a 0,43, T ECSD de 8,98 a 15,24 minutos, e EA de 0,18 a 0,40), expressiva capacidade de sequestro do radical ABTSe+ (55,56 a 120,08 IlMol TEAC.g-1) e forte inibição da peroxidação do ácido linoléico (88,45 a 92,89%). Em sistema da co-oxidação do ~-caroteno/ácido linoléico exibiram ação moderada (56,91 a 69,41 % de inibição), demonstrando serem eficientes em bloquear o início da reação) de oxidação (F1 <1), porém na fase de propagação, o genótipo G 3.2 demonstrou maior eficiência (F2<1). Os frutos do cajá-umbuzeiro apresentam em sua constituição compostos bioativos e bom potencial antioxidante, podendo contribuir com o aporte dietético de antioxidante.Submitted by (edna.saturno@ufrpe.br) on 2016-07-26T11:34:06Z No. of bitstreams: 1 Aldenise Chagas Curvello G Moreira.pdf: 1832678 bytes, checksum: 08dcbab15cec31bc62f7c570ddae3ae1 (MD5)Made available in DSpace on 2016-07-26T11:34:06Z (GMT). No. of bitstreams: 1 Aldenise Chagas Curvello G Moreira.pdf: 1832678 bytes, checksum: 08dcbab15cec31bc62f7c570ddae3ae1 (MD5) Previous issue date: 2011-02-24application/pdfporUniversidade Federal Rural de PernambucoPrograma de Pós-Graduação em Ciência e Tecnologia de AlimentosUFRPEBrasilDepartamento de Ciências DomésticasFitoquímico bioativoExtração sequencialCajá-umbuAtividade antioxidanteBioactive phytochemicalsSequential extractionAntioxidant activityCIENCIAS AGRARIAS::CIENCIA E TECNOLOGIA DE ALIMENTOSCaracterização de frutos de genótipos de cajá-umbuzeiras : teor de fitoquímicos bioativos e potencial antioxidanteinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesis-3168359563433608541600600600-395403402001511222138879504442384524info:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações da UFRPEinstname:Universidade Federal Rural de Pernambuco (UFRPE)instacron:UFRPELICENSElicense.txtlicense.txttext/plain; charset=utf-82165http://www.tede2.ufrpe.br:8080/tede2/bitstream/tede2/5068/1/license.txtbd3efa91386c1718a7f26a329fdcb468MD51ORIGINALAldenise Chagas Curvello G Moreira.pdfAldenise Chagas Curvello G Moreira.pdfapplication/pdf1832678http://www.tede2.ufrpe.br:8080/tede2/bitstream/tede2/5068/2/Aldenise+Chagas+Curvello+G+Moreira.pdf08dcbab15cec31bc62f7c570ddae3ae1MD52tede2/50682016-07-26 08:34:06.127oai:tede2: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Biblioteca Digital de Teses e Dissertaçõeshttp://www.tede2.ufrpe.br:8080/tede/PUBhttp://www.tede2.ufrpe.br:8080/oai/requestbdtd@ufrpe.br ||bdtd@ufrpe.bropendoar:2024-05-28T12:32:33.291102Biblioteca Digital de Teses e Dissertações da UFRPE - Universidade Federal Rural de Pernambuco (UFRPE)false |
dc.title.por.fl_str_mv |
Caracterização de frutos de genótipos de cajá-umbuzeiras : teor de fitoquímicos bioativos e potencial antioxidante |
title |
Caracterização de frutos de genótipos de cajá-umbuzeiras : teor de fitoquímicos bioativos e potencial antioxidante |
spellingShingle |
Caracterização de frutos de genótipos de cajá-umbuzeiras : teor de fitoquímicos bioativos e potencial antioxidante MOREIRA, Aldenise Chagas Curvêlo Gonçalves Fitoquímico bioativo Extração sequencial Cajá-umbu Atividade antioxidante Bioactive phytochemicals Sequential extraction Antioxidant activity CIENCIAS AGRARIAS::CIENCIA E TECNOLOGIA DE ALIMENTOS |
title_short |
Caracterização de frutos de genótipos de cajá-umbuzeiras : teor de fitoquímicos bioativos e potencial antioxidante |
title_full |
Caracterização de frutos de genótipos de cajá-umbuzeiras : teor de fitoquímicos bioativos e potencial antioxidante |
title_fullStr |
Caracterização de frutos de genótipos de cajá-umbuzeiras : teor de fitoquímicos bioativos e potencial antioxidante |
title_full_unstemmed |
Caracterização de frutos de genótipos de cajá-umbuzeiras : teor de fitoquímicos bioativos e potencial antioxidante |
title_sort |
Caracterização de frutos de genótipos de cajá-umbuzeiras : teor de fitoquímicos bioativos e potencial antioxidante |
author |
MOREIRA, Aldenise Chagas Curvêlo Gonçalves |
author_facet |
MOREIRA, Aldenise Chagas Curvêlo Gonçalves |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
MELO, Enayde de Almeida |
dc.contributor.referee1.fl_str_mv |
BEZERRA NETO, Egídio |
dc.contributor.referee2.fl_str_mv |
MACIEL, Maria Inês Sucupira |
dc.contributor.referee3.fl_str_mv |
SILVA, Tânia Maria Sarmento da |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/7344180962521765 |
dc.contributor.author.fl_str_mv |
MOREIRA, Aldenise Chagas Curvêlo Gonçalves |
contributor_str_mv |
MELO, Enayde de Almeida BEZERRA NETO, Egídio MACIEL, Maria Inês Sucupira SILVA, Tânia Maria Sarmento da |
dc.subject.por.fl_str_mv |
Fitoquímico bioativo Extração sequencial Cajá-umbu Atividade antioxidante |
topic |
Fitoquímico bioativo Extração sequencial Cajá-umbu Atividade antioxidante Bioactive phytochemicals Sequential extraction Antioxidant activity CIENCIAS AGRARIAS::CIENCIA E TECNOLOGIA DE ALIMENTOS |
dc.subject.eng.fl_str_mv |
Bioactive phytochemicals Sequential extraction Antioxidant activity |
dc.subject.cnpq.fl_str_mv |
CIENCIAS AGRARIAS::CIENCIA E TECNOLOGIA DE ALIMENTOS |
description |
The aim this work was to characterize "cajá-umbu" fruits coming from the germplasm's collection IPA (Instituto Agronômico de Pernambuco). Fruits of the 4 genotypes (G 2.2, G 2.3, G 3.1, G 3.2) were used to quantify the phytochemicals bioactive and evaluate the antioxidant potential. The polyphenols were quantified by spectrophotometric method, the ascorbic acid by titulometric method and carotenoids by chromatographic and spectrophotometric techniques. Hydroacetone, hydromethanolic and aqueous extracts were obtained using 3 extraction systems: a) sequential extraction: acetone 80%, methanol 80% and water, b) sequential extraction: water, methanol 80% and acetone 80% c) non¬sequential extraction. The isolated and combined extracts were submitted to the determination of total phenolic content, screened for their free DPPH- (1,1¬diphenyl-2-picrilhidrazil) and ABTS-+) (2,2'-azino-bis-(3-etilbenzotiazoline 6¬sulfonic acid) scavenging activity, and their effect on the linoleic acid peroxidation by the system of co-oxidation r3-carotene/acid linoleic and ferric thiocyanate method. The fruits showed significant content of polyphenols, low levels of ascorbic acid and carotenoids. The I3-carotene 5-6, 5'6'-diepoxide was the major component of genotypes G 2.2, G 2.3, G 3.1, and 5-6 epoxide lutein for G 3.2. The extraction procedure which employed acetone 80% as first solvent could extract a larger amount of total phenolic. Ali genotypes exhibited good DPPH- scavenging activity (ECSD value of 0.30 to 0.43, TEcSD value of 8.98 to 15.24 minutes, and EA value of 0.18 to 0.40), significant ABTS-+ scavenging capacity (55.56 a 120.08 IJMol TEAC.g-1) and high percentage of inhibition of peroxidation of linoleic acid (88.45 to 92.89%). In co-oxidation of linoleic acid/r3-carotene system exhibited moderate activity (56.91 to 69.41 % inhibition), showing that they are effective in blocking the onset of oxidation reaction (F1 <1), but the propagation phase, G 3.2 genotype showed higher efficiency (F2 <1). Therefore, fruits of "cajá-umbuzeiro" have bioactive compounds and good antioxidant potential that can contribute te the dietary intake of antioxidant. |
publishDate |
2011 |
dc.date.issued.fl_str_mv |
2011-02-24 |
dc.date.accessioned.fl_str_mv |
2016-07-26T11:34:06Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
MOREIRA, Aldenise Chagas Curvêlo Gonçalves. Caracterização de frutos de genótipos de cajá-umbuzeiras : teor de fitoquímicos bioativos e potencial antioxidante. 2011. 123 f. Dissertação (Programa de Pós-Graduação em Ciência e Tecnologia de Alimentos) - Universidade Federal Rural de Pernambuco, Recife. |
dc.identifier.uri.fl_str_mv |
http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5068 |
identifier_str_mv |
MOREIRA, Aldenise Chagas Curvêlo Gonçalves. Caracterização de frutos de genótipos de cajá-umbuzeiras : teor de fitoquímicos bioativos e potencial antioxidante. 2011. 123 f. Dissertação (Programa de Pós-Graduação em Ciência e Tecnologia de Alimentos) - Universidade Federal Rural de Pernambuco, Recife. |
url |
http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5068 |
dc.language.iso.fl_str_mv |
por |
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por |
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138879504442384524 |
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info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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dc.publisher.none.fl_str_mv |
Universidade Federal Rural de Pernambuco |
dc.publisher.program.fl_str_mv |
Programa de Pós-Graduação em Ciência e Tecnologia de Alimentos |
dc.publisher.initials.fl_str_mv |
UFRPE |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Departamento de Ciências Domésticas |
publisher.none.fl_str_mv |
Universidade Federal Rural de Pernambuco |
dc.source.none.fl_str_mv |
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Biblioteca Digital de Teses e Dissertações da UFRPE |
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