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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
10/04/1995 |
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Data da última atualização: |
10/04/1995 |
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Autoria: |
OBA, K.; IWATSUKI, N.; URITANI, I.; ALVAREZ, A. M.; GARCIA, V. V. |
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Título: |
Polyphenol oxidase in banana fruit and buds. |
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Ano de publicação: |
1994 |
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Fonte/Imprenta: |
Tokyo, Japan: Japan Scientific Societies Press, 1994. |
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Páginas: |
p.35-46 |
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ISBN: |
4-7622-7755-X |
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Idioma: |
Inglês |
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Notas: |
In: URITANI, I.; GARCIA, V. V.; MENDOZA, E. M. Postharvest Biochemistry of plant food-materials in the tropics. |
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Conteúdo: |
PPO is primarily responsible for the enzymic browning that occurs in banana fruits and buds. This enzyme was extracted from banana buds in the presence of Triton X-100, isoascorbate, and Polyclar AT. Two isozymes, I and II, were separated and partially purified by chromotagraphy on Butyl Toyopearl 650 and DEAE-cellulose. They exhibited different mobilities in PAGE and showed optimum pHs of 6.8 and 5.5, respectively. Both isozymes showed apparent Km values of 0.5 mM for the best substrate, dopamine, with substrate inhibitions at higher concentrations. Isozymes I and II were inhibited competitively by NaCl with Ki values of 140 mM and 40 mM, respectively. Both have a high heat stablitity similar to banana pulp PPO, with respectively 88 and 95% of their initial activity retained after l-hr incubation at 70 grauC. |
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Palavras-Chave: |
Enzimas; Polyphenol. |
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Thesagro: |
Oxidação. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01514naa a2200241 a 4500
001 1644446
005 1995-04-10
008 1994 bl uuuu u00u1 u #d
020 $a4-7622-7755-X
100 1 $aOBA, K.
245 $aPolyphenol oxidase in banana fruit and buds.
260 $c1994
300 $ap.35-46
500 $aIn: URITANI, I.; GARCIA, V. V.; MENDOZA, E. M. Postharvest Biochemistry of plant food-materials in the tropics.
520 $aPPO is primarily responsible for the enzymic browning that occurs in banana fruits and buds. This enzyme was extracted from banana buds in the presence of Triton X-100, isoascorbate, and Polyclar AT. Two isozymes, I and II, were separated and partially purified by chromotagraphy on Butyl Toyopearl 650 and DEAE-cellulose. They exhibited different mobilities in PAGE and showed optimum pHs of 6.8 and 5.5, respectively. Both isozymes showed apparent Km values of 0.5 mM for the best substrate, dopamine, with substrate inhibitions at higher concentrations. Isozymes I and II were inhibited competitively by NaCl with Ki values of 140 mM and 40 mM, respectively. Both have a high heat stablitity similar to banana pulp PPO, with respectively 88 and 95% of their initial activity retained after l-hr incubation at 70 grauC.
650 $aOxidação
653 $aEnzimas
653 $aPolyphenol
700 1 $aIWATSUKI, N.
700 1 $aURITANI, I.
700 1 $aALVAREZ, A. M.
700 1 $aGARCIA, V. V.
773 $tTokyo, Japan: Japan Scientific Societies Press, 1994.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
19/10/2021 |
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Data da última atualização: |
19/10/2021 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
SIMÕES, M.; COSTA, G. A. P.; SINGH, D.; SINGH, K. P.; COUTINHO, H. L. da C.; FRAGA, E.; BERROIR, J. P.; HERLIN, I.; VIEIRA, H. V.; SANTOS, U. P. |
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Afiliação: |
MARGARETH GONCALVES SIMOES, CNPS; GILSON A. P. COSTA, UERJ; D. SINGH, Harcourt Butler Technological Institute, Kanpur; K. P. SINGH, Harcourt Butler Technological Institute, Kanpur; HEITOR LUIZ DA COSTA COUTINHO, CNPS; E. FRAGA, CNPS; J. P. BERROIR, INRIA; I. HERLIN, INRIA; H. V. VIEIRA, UFRJ; U. P. SANTOS, UFRJ. |
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Título: |
Remote sensing and spatial decision support system for environmental degradation monitoring. |
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Ano de publicação: |
2003 |
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Fonte/Imprenta: |
In: IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM, 2003, Toulouse. Proceedings... Piscataway: IEEE, 2003. v. 3, p. 2088-2090. IGARSS 2003. |
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DOI: |
https://doi.org/10.1109/IGARSS.2003.1294348 |
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Idioma: |
Inglês |
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Conteúdo: |
Agricultural activities have expanded dramatically in Brazil during the last 30 years, causing significant damage to the original Cerrado ecosystem and threatening the Pantanal biome. Therefore, there is an urgent need to develop such a system, which can predict erosion and all other related problems of this area. Now days, remote sensing from satellite platforms has become increasingly important as the only means of achieving the spatial and temporal coverage global land process. Due to this, remote sensing is very useful tool to monitor the ecological and environmental parameters. So, present work aims to describes the conception of the development of a Spatial Decision Support System (SDSS) to assist land use management of the Upper Taquari Basin, Mato Grosso do Sul, Brasil being a useful tool to environmental decision makers and propose a remote sensing based model to assess the erosion process using National Oceanic and Atmospheric Administration (NOAA)/Advanced Very High Resolution Radiometer (AVHRR) data. |
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Thesaurus NAL: |
Remote sensing; Soil color; Soil erosion. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 01921nam a2200265 a 4500
001 2135448
005 2021-10-19
008 2003 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1109/IGARSS.2003.1294348$2DOI
100 1 $aSIMÕES, M.
245 $aRemote sensing and spatial decision support system for environmental degradation monitoring.$h[electronic resource]
260 $aIn: IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM, 2003, Toulouse. Proceedings... Piscataway: IEEE, 2003. v. 3, p. 2088-2090. IGARSS 2003.$c2003
520 $aAgricultural activities have expanded dramatically in Brazil during the last 30 years, causing significant damage to the original Cerrado ecosystem and threatening the Pantanal biome. Therefore, there is an urgent need to develop such a system, which can predict erosion and all other related problems of this area. Now days, remote sensing from satellite platforms has become increasingly important as the only means of achieving the spatial and temporal coverage global land process. Due to this, remote sensing is very useful tool to monitor the ecological and environmental parameters. So, present work aims to describes the conception of the development of a Spatial Decision Support System (SDSS) to assist land use management of the Upper Taquari Basin, Mato Grosso do Sul, Brasil being a useful tool to environmental decision makers and propose a remote sensing based model to assess the erosion process using National Oceanic and Atmospheric Administration (NOAA)/Advanced Very High Resolution Radiometer (AVHRR) data.
650 $aRemote sensing
650 $aSoil color
650 $aSoil erosion
700 1 $aCOSTA, G. A. P.
700 1 $aSINGH, D.
700 1 $aSINGH, K. P.
700 1 $aCOUTINHO, H. L. da C.
700 1 $aFRAGA, E.
700 1 $aBERROIR, J. P.
700 1 $aHERLIN, I.
700 1 $aVIEIRA, H. V.
700 1 $aSANTOS, U. P.
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