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Registro Completo |
Biblioteca(s): |
Embrapa Clima Temperado. |
Data corrente: |
05/03/2020 |
Data da última atualização: |
03/12/2020 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
MALLMANN, L. P.; TISCHER, B.; VIZZOTTO, M.; RODRIGUES, E.; MANFROI, V. |
Afiliação: |
MARCIA VIZZOTTO, CPACT. |
Título: |
Comprehensive identification and quantification of unexploited phenolic compounds from red and yellow araçá (Psidium cattleianum Sabine) by LC-DAD-ESI-MS/MS. |
Ano de publicação: |
2020 |
Fonte/Imprenta: |
Food Research International, v. 131, May 2020. |
Páginas: |
9 p. |
DOI: |
10.1016/j.foodres.2020.108978 |
Idioma: |
Inglês |
Notas: |
Available online 7 January 2020. |
Conteúdo: |
LC-DAD-ESI-MS/MS was used to comprehensively characterise the non-extractable phenolic compounds (NEPC) in red and yellow araçá genotypes. Results showed a total of 45 and 43 phenolic compounds in the NEPC fraction and, similarly, 51 and 50 compounds in extractable phenolic compounds (EPC) fraction from red and yellow araçá, respectively. Gallic acid and ellagic acid were the unique compounds found in both fractions. The NEPC fraction represented about 35% (m/m) of the total phenolic content and was characterised by an abundance of phenolic acids, while the EPC fraction was rich in flavanols. Although NEPC represented one-third of the total phenolic compounds found in araçá, its antioxidant capacity (against peroxyl radical) was 50% higher than the EPC fraction. The results of this work show that the NEPC fraction of araçá has great diversity and a relatively high concentration of low-molecular-weight phenolic compounds with high antioxidant capacity. |
Thesagro: |
Araçá. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01687naa a2200217 a 4500 001 2120956 005 2020-12-03 008 2020 bl uuuu u00u1 u #d 024 7 $a10.1016/j.foodres.2020.108978$2DOI 100 1 $aMALLMANN, L. P. 245 $aComprehensive identification and quantification of unexploited phenolic compounds from red and yellow araçá (Psidium cattleianum Sabine) by LC-DAD-ESI-MS/MS.$h[electronic resource] 260 $c2020 300 $a9 p. 500 $aAvailable online 7 January 2020. 520 $aLC-DAD-ESI-MS/MS was used to comprehensively characterise the non-extractable phenolic compounds (NEPC) in red and yellow araçá genotypes. Results showed a total of 45 and 43 phenolic compounds in the NEPC fraction and, similarly, 51 and 50 compounds in extractable phenolic compounds (EPC) fraction from red and yellow araçá, respectively. Gallic acid and ellagic acid were the unique compounds found in both fractions. The NEPC fraction represented about 35% (m/m) of the total phenolic content and was characterised by an abundance of phenolic acids, while the EPC fraction was rich in flavanols. Although NEPC represented one-third of the total phenolic compounds found in araçá, its antioxidant capacity (against peroxyl radical) was 50% higher than the EPC fraction. The results of this work show that the NEPC fraction of araçá has great diversity and a relatively high concentration of low-molecular-weight phenolic compounds with high antioxidant capacity. 650 $aAraçá 700 1 $aTISCHER, B. 700 1 $aVIZZOTTO, M. 700 1 $aRODRIGUES, E. 700 1 $aMANFROI, V. 773 $tFood Research International$gv. 131, May 2020.
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Embrapa Clima Temperado (CPACT) |
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Biblioteca(s): |
Embrapa Cerrados. |
Data corrente: |
21/09/2016 |
Data da última atualização: |
21/09/2016 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
B - 2 |
Autoria: |
DINIZ, L. T.; RAMOS, M. L. G.; RIBEIRO JUNIOR, W. Q.; CRUZ, A. F.; FRANCA, L. V. de; DINIZ, B. T.; AMABILE, R. F. |
Afiliação: |
LIDIA TARDCHETTI DINIZ, UNB; MARIA LUCRÉCIA GEROSA RAMOS, UNB; WALTER QUADROS RIBEIRO JUNIOR, CPAC; ANDRE FREIRE CRUZ, KYOTO PREFECTURAL UNIVERSITY; LEONICE VIEIRA DE FRANCA, UNB; BRUNO TARCHETTI DINIZ, UNB; RENATO FERNANDO AMABILE, CPAC. |
Título: |
Effect of nitrogen fertilization on soil microbial biomass in an Oxisol cultivated with irrigated barley in the Brazilian Cerrado. |
Complemento do título: |
Efecto de la fertilización nitrogenada en la biomasa microbiana del suelo en Oxisuelos cultivados con cebada irrigada en el Cerrado de Brasil. |
Ano de publicação: |
2016 |
Fonte/Imprenta: |
Acta Agronómica, v. 65, n. 2, p. 137-143, Apr./June 2016. |
DOI: |
http://dx.doi.org/10.15446/acag.v65n2.46432 |
Idioma: |
Inglês |
Conteúdo: |
Abstract:The aim of this study was to evaluate the effect of different nitrogen doses and five period of sample collection, on soil microbial biomass - nitrogen (SMB-N), total nitrogen (total N) and percentual ratio of the microbial biomass and total N (SMB-N/total N) in a Oxisol cultivated with barley (Hordeum vulgare L.). The experiment was installed in June, 2005, in an area located at Embrapa Cerrados, Federal District. The experimental design was a randomized block, with three replicates. The plots received doses of nitrogen: 20 - 40 - 80 kg ha-1 N and a control without it and the subplots were period of soil sample. Three applications of N were realized: 10 kg ha-1 on the 5th day (06/14) after sowing; the rest of N was parceled in two applications with fertigation, on tillage, on the 27th (07/08) DAP, e no 43rd (07/22) DAP. Soil samples layer (0 - 10 cm deep) were collected for (SMB-N) determination and total N in six periods: 02 days before of the first fertigation; 02 days after of the first fertigation; 04 days before of the last fertigation and 04 days after of the last fertigation; on flowering stage and after harvesting. There was effect of the doses of N and the period of soil collection on the SMB-N, total N and in the ratio SMB-N/total N. The average values of total N revealed steadier in short-term (cycle of the culture) and this was not a good parameter to evaluate the behavior and N transformations in the soil-plant system. Resumen: El objetivo de este estudio fue evaluar el efecto de diferentes dosis de nitrógeno y cinco período de muestreo en la biomasa microbiana del complejo suelo - nitrogeno (BMS-N), nitrógeno total (N total) y la relación porcentual de la biomasa microbiana y N total (BMS-N/N total) en un Oxisol cultivado con cebada (Hordeum vulgare L.). El estudio se inició en junio de 2005 en la estación experimental de la Empresa de Pesquisa Agropecuaria (Embrapa-Cerrados), Distrito Federal, Brazil. El experimento se dispuso en bloques al azar con tres repeticiones. Las parcelas recibieron dosis de nitrógeno: 20 - 40 - 80 kg/ha de N más un control sin N, y las subparcelas fueron el periodo de muestro. Las aplicaciones de N se realizaron de la forma siguiente: cinco días después de la siembra (dds) se aplicaron 10 kg/ha y el resto de la dosis se aplicó con fertirrigación en dos dosis 27 y 43 dds. Las muestras de suelo (0-10 cm de profundidad) para determinar BMS-N y N total fueron tomadas, 2 días antes e igual número de días después de la primera fertirrigación y 4 días antes y después de la última, en floración y después de la cosecha. No se encontró efecto de las dosis de N y el período de muestreo en el BMS-N, N total y en la relación BMS-N/N total. Los valores medios de N total fueron más estable en el corto plazo (ciclo de la cultivo) lo que indica que éste no es un buen parámetro para evaluar la dinámica del N y sus transformaciones en el sistema suelo-planta. MenosAbstract:The aim of this study was to evaluate the effect of different nitrogen doses and five period of sample collection, on soil microbial biomass - nitrogen (SMB-N), total nitrogen (total N) and percentual ratio of the microbial biomass and total N (SMB-N/total N) in a Oxisol cultivated with barley (Hordeum vulgare L.). The experiment was installed in June, 2005, in an area located at Embrapa Cerrados, Federal District. The experimental design was a randomized block, with three replicates. The plots received doses of nitrogen: 20 - 40 - 80 kg ha-1 N and a control without it and the subplots were period of soil sample. Three applications of N were realized: 10 kg ha-1 on the 5th day (06/14) after sowing; the rest of N was parceled in two applications with fertigation, on tillage, on the 27th (07/08) DAP, e no 43rd (07/22) DAP. Soil samples layer (0 - 10 cm deep) were collected for (SMB-N) determination and total N in six periods: 02 days before of the first fertigation; 02 days after of the first fertigation; 04 days before of the last fertigation and 04 days after of the last fertigation; on flowering stage and after harvesting. There was effect of the doses of N and the period of soil collection on the SMB-N, total N and in the ratio SMB-N/total N. The average values of total N revealed steadier in short-term (cycle of the culture) and this was not a good parameter to evaluate the behavior and N transformations in the soil-plant system. Resumen: El objetivo de este estu... Mostrar Tudo |
Palavras-Chave: |
Biomasa microbiana; Qualidade do solo. |
Thesagro: |
Cerrado; Hordeum vulgare; Nitrogênio. |
Thesaurus NAL: |
Microbial biomass; Nitrogen; Soil quality. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/147670/1/v65n2a05.pdf
|
Marc: |
LEADER 03881naa a2200301 a 4500 001 2053272 005 2016-09-21 008 2016 bl uuuu u00u1 u #d 024 7 $ahttp://dx.doi.org/10.15446/acag.v65n2.46432$2DOI 100 1 $aDINIZ, L. T. 245 $aEffect of nitrogen fertilization on soil microbial biomass in an Oxisol cultivated with irrigated barley in the Brazilian Cerrado. 260 $c2016 520 $aAbstract:The aim of this study was to evaluate the effect of different nitrogen doses and five period of sample collection, on soil microbial biomass - nitrogen (SMB-N), total nitrogen (total N) and percentual ratio of the microbial biomass and total N (SMB-N/total N) in a Oxisol cultivated with barley (Hordeum vulgare L.). The experiment was installed in June, 2005, in an area located at Embrapa Cerrados, Federal District. The experimental design was a randomized block, with three replicates. The plots received doses of nitrogen: 20 - 40 - 80 kg ha-1 N and a control without it and the subplots were period of soil sample. Three applications of N were realized: 10 kg ha-1 on the 5th day (06/14) after sowing; the rest of N was parceled in two applications with fertigation, on tillage, on the 27th (07/08) DAP, e no 43rd (07/22) DAP. Soil samples layer (0 - 10 cm deep) were collected for (SMB-N) determination and total N in six periods: 02 days before of the first fertigation; 02 days after of the first fertigation; 04 days before of the last fertigation and 04 days after of the last fertigation; on flowering stage and after harvesting. There was effect of the doses of N and the period of soil collection on the SMB-N, total N and in the ratio SMB-N/total N. The average values of total N revealed steadier in short-term (cycle of the culture) and this was not a good parameter to evaluate the behavior and N transformations in the soil-plant system. Resumen: El objetivo de este estudio fue evaluar el efecto de diferentes dosis de nitrógeno y cinco período de muestreo en la biomasa microbiana del complejo suelo - nitrogeno (BMS-N), nitrógeno total (N total) y la relación porcentual de la biomasa microbiana y N total (BMS-N/N total) en un Oxisol cultivado con cebada (Hordeum vulgare L.). El estudio se inició en junio de 2005 en la estación experimental de la Empresa de Pesquisa Agropecuaria (Embrapa-Cerrados), Distrito Federal, Brazil. El experimento se dispuso en bloques al azar con tres repeticiones. Las parcelas recibieron dosis de nitrógeno: 20 - 40 - 80 kg/ha de N más un control sin N, y las subparcelas fueron el periodo de muestro. Las aplicaciones de N se realizaron de la forma siguiente: cinco días después de la siembra (dds) se aplicaron 10 kg/ha y el resto de la dosis se aplicó con fertirrigación en dos dosis 27 y 43 dds. Las muestras de suelo (0-10 cm de profundidad) para determinar BMS-N y N total fueron tomadas, 2 días antes e igual número de días después de la primera fertirrigación y 4 días antes y después de la última, en floración y después de la cosecha. No se encontró efecto de las dosis de N y el período de muestreo en el BMS-N, N total y en la relación BMS-N/N total. Los valores medios de N total fueron más estable en el corto plazo (ciclo de la cultivo) lo que indica que éste no es un buen parámetro para evaluar la dinámica del N y sus transformaciones en el sistema suelo-planta. 650 $aMicrobial biomass 650 $aNitrogen 650 $aSoil quality 650 $aCerrado 650 $aHordeum vulgare 650 $aNitrogênio 653 $aBiomasa microbiana 653 $aQualidade do solo 700 1 $aRAMOS, M. L. G. 700 1 $aRIBEIRO JUNIOR, W. Q. 700 1 $aCRUZ, A. F. 700 1 $aFRANCA, L. V. de 700 1 $aDINIZ, B. T. 700 1 $aAMABILE, R. F. 773 $tActa Agronómica$gv. 65, n. 2, p. 137-143, Apr./June 2016.
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