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Registro Completo |
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
18/12/2017 |
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Data da última atualização: |
18/12/2017 |
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Autoria: |
AMARANTE, C. V. T. do; SOUZA, A. G. de; Dal Toé Benincá. T.; STEFFENS, C. A. |
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Afiliação: |
Cassandro Vidal Talamini do Amarante, Universidade do Estado de Santa Catarina/Centro de Ciências Agroveterinárias; Alexandra Goede de Souza, Universidade do Estado de Santa Catarina/Centro de Ciências Agroveterinárias; Thalita Dal Toé Benincá, Universidade do Estado de Santa Catarina/Centro de Ciências Agroveterinárias; Cristiano André Steffens, Universidade do Estado de Santa Catarina/Centro de Ciências Agroveterinárias. |
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Título: |
Phenolic content and antioxidant activity of fruit of Brazilian genotypes of feijoa. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 52, n. 12, p. 1223-1230, dez. 2017. |
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Idioma: |
Inglês |
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Notas: |
Título em português: Compostos fenólicos e atividade antioxidante em frutos de genótipos brasileiros de goiabeira-serrana. |
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Conteúdo: |
The objective of this work was to quantify the total phenolic content (TPC) and total antioxidant activity (TAA) of fruit from Brazilian genotypes of feijoa (Acca sellowiana). Skin and flesh tissues of the fruit were evaluated for the Alcântara, Helena, Mattos, and Nonante cultivars, and for the 2316 accession. TPC and TAA were both assessed in aqueous and hydroalcoholic extracts, and TAA was assayed by the DPPH (2,2-diphenyl-1-picrylhydrazyl) and ABTS [2,2?-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid)] methods. The TPC values, for aqueous extracts of the skin and flesh tissues, were 114.9 and 88.3 mg gallic acid equivalent (GAE) per 100 g fresh weight (FW), respectively. The corresponding values for TAA determined by the DPPH method, the skin and flesh tissues, given as EC50 (substrate concentration which leads to 50% reduction of the DPPH), were 10.7 and 39.7 mg FW per g DPPH, respectively; and, by the ABTS method, the TAA values were 12.01 and 8.33 μmol L-1 Trolox per g FW, respectively. The greatest values for TPC and TAA were obtained for 'Mattos' and 'Nonante', in the skin, and for 'Nonante' and accession 2316, in the flesh. Feijoa fruit has important functional value, particularly in the skin, characterized by high TPC and TAA. |
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Palavras-Chave: |
Alimento funcional; Caracterização de polpa e casca; DPPH and ABTS methods; Feijoa sellowiana; Flesh and skin characterization; Functional food; Métodos DPPH e ABTS. |
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Thesaurus Nal: |
Acca sellowiana. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/169178/1/Phenolic-content-and-antioxidant-activity.pdf
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Marc: |
LEADER 02221naa a2200265 a 4500
001 2082768
005 2017-12-18
008 2017 bl uuuu u00u1 u #d
100 1 $aAMARANTE, C. V. T. do
245 $aPhenolic content and antioxidant activity of fruit of Brazilian genotypes of feijoa.
260 $c2017
500 $aTítulo em português: Compostos fenólicos e atividade antioxidante em frutos de genótipos brasileiros de goiabeira-serrana.
520 $aThe objective of this work was to quantify the total phenolic content (TPC) and total antioxidant activity (TAA) of fruit from Brazilian genotypes of feijoa (Acca sellowiana). Skin and flesh tissues of the fruit were evaluated for the Alcântara, Helena, Mattos, and Nonante cultivars, and for the 2316 accession. TPC and TAA were both assessed in aqueous and hydroalcoholic extracts, and TAA was assayed by the DPPH (2,2-diphenyl-1-picrylhydrazyl) and ABTS [2,2?-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid)] methods. The TPC values, for aqueous extracts of the skin and flesh tissues, were 114.9 and 88.3 mg gallic acid equivalent (GAE) per 100 g fresh weight (FW), respectively. The corresponding values for TAA determined by the DPPH method, the skin and flesh tissues, given as EC50 (substrate concentration which leads to 50% reduction of the DPPH), were 10.7 and 39.7 mg FW per g DPPH, respectively; and, by the ABTS method, the TAA values were 12.01 and 8.33 μmol L-1 Trolox per g FW, respectively. The greatest values for TPC and TAA were obtained for 'Mattos' and 'Nonante', in the skin, and for 'Nonante' and accession 2316, in the flesh. Feijoa fruit has important functional value, particularly in the skin, characterized by high TPC and TAA.
650 $aAcca sellowiana
653 $aAlimento funcional
653 $aCaracterização de polpa e casca
653 $aDPPH and ABTS methods
653 $aFeijoa sellowiana
653 $aFlesh and skin characterization
653 $aFunctional food
653 $aMétodos DPPH e ABTS
700 1 $aSOUZA, A. G. de
700 1 $aDal Toé Benincá. T.
700 1 $aSTEFFENS, C. A.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 52, n. 12, p. 1223-1230, dez. 2017.
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Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
13/12/2013 |
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Data da última atualização: |
18/02/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
BAYER, C.; GOMES, J.; VIEIRA, F. C. B.; ZANATTA, J. A.; PICCOLO, M. de C.; DIECKOW, J. |
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Afiliação: |
Cimélio Bayer, UFRGS; Juliana Gomes, UFRGS; Frederico Costa Beber Vieira, UNIPAMPA; JOSILEIA ACORDI ZANATTA, CNPF; Marisa de Cássia Piccolo, USP; Jeferson Dieckow, UFPR. |
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Título: |
Soil methane oxidation in a long-term no-tillage system in Southern Brazil. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Semina: Ciências Agrárias, Londrina, v. 34, n. 4, p. 1695-1706, jul./ago. 2013. |
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Idioma: |
Português |
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Conteúdo: |
Conservation management systems are usually suggested as alternative to restore the soil methane (CH4) oxidation capacity of degraded soils; however, little information is available on tropical and subtropical soils. Our objective was to evaluate the long-term (19 years) effect of no-tillage (NT) versus conventional tillage (CT) management systems on CH4 fluxes in a formerly degraded Acrisol in Southern Brazil. Annual CH4 fluxes of two cropping systems [O/M-black oat (Avena strigosa)/maize and V/M-vetch (Vigna sativa)/maize] were measured in NT and CT soils. Static chambers were used for air sampling, while chromatography was used for CH4 analysis. Analysis of the historical dataset at this experimental site indicated improvements in soil quality under the NT system, especially in legumebased cropping system (V/M) that exhibited the highest annual biomass input. CH4 fluxes ranged from ?42 ± 2 to 38 ± 16 ?g C m-2 h-1, and annual CH4 emissions ranged from ?825 ± 117 (CT V/M) to 453 ± 185 g C ha-1 (NT O/M). Thus, the annual CH4 oxidation capacity of the soil was not related to the soil quality produced by the soil management systems. On the basis of our results and published literature, we postulate that conservation management systems improve the methane oxidation and soil quality in distinct soil layers, which result in a slow effect of these management systems on the methane oxidation capacity. |
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Palavras-Chave: |
Aquecimento global; Preparo; Sistema de cultura. |
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Thesagro: |
Solo. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02087naa a2200229 a 4500
001 1973787
005 2015-02-18
008 2013 bl uuuu u00u1 u #d
100 1 $aBAYER, C.
245 $aSoil methane oxidation in a long-term no-tillage system in Southern Brazil.$h[electronic resource]
260 $c2013
520 $aConservation management systems are usually suggested as alternative to restore the soil methane (CH4) oxidation capacity of degraded soils; however, little information is available on tropical and subtropical soils. Our objective was to evaluate the long-term (19 years) effect of no-tillage (NT) versus conventional tillage (CT) management systems on CH4 fluxes in a formerly degraded Acrisol in Southern Brazil. Annual CH4 fluxes of two cropping systems [O/M-black oat (Avena strigosa)/maize and V/M-vetch (Vigna sativa)/maize] were measured in NT and CT soils. Static chambers were used for air sampling, while chromatography was used for CH4 analysis. Analysis of the historical dataset at this experimental site indicated improvements in soil quality under the NT system, especially in legumebased cropping system (V/M) that exhibited the highest annual biomass input. CH4 fluxes ranged from ?42 ± 2 to 38 ± 16 ?g C m-2 h-1, and annual CH4 emissions ranged from ?825 ± 117 (CT V/M) to 453 ± 185 g C ha-1 (NT O/M). Thus, the annual CH4 oxidation capacity of the soil was not related to the soil quality produced by the soil management systems. On the basis of our results and published literature, we postulate that conservation management systems improve the methane oxidation and soil quality in distinct soil layers, which result in a slow effect of these management systems on the methane oxidation capacity.
650 $aSolo
653 $aAquecimento global
653 $aPreparo
653 $aSistema de cultura
700 1 $aGOMES, J.
700 1 $aVIEIRA, F. C. B.
700 1 $aZANATTA, J. A.
700 1 $aPICCOLO, M. de C.
700 1 $aDIECKOW, J.
773 $tSemina: Ciências Agrárias, Londrina$gv. 34, n. 4, p. 1695-1706, jul./ago. 2013.
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