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 | Acceso al texto completo restringido a Biblioteca INIA Las Brujas. Por información adicional contacte bibliolb@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha : |
10/07/2019 |
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Actualizado : |
10/07/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
BESIL, N.; REZENDE, S.; ALONZO, N.; CESIO, M.V.; RIVAS, F.; HEINZEN, H. |
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Afiliación : |
NATALIA BESIL, Grupo de Análisis de Compuestos Traza (GACT), Departamento de Química del Litoral, Facultad de Química, CENUR Litoral Norte, Universidad de la República.; SOFÍA REZENDE, Grupo de Análisis de Compuestos Traza (GACT), Departamento de Química del Litoral, Facultad de Química, CENUR Litoral Norte, Universidad de la República, Paysandú, Uruguay.; NOEL ALONZO, Grupo de Análisis de Compuestos Traza (GACT), Departamento de Química del Litoral, Facultad de Química, CENUR Litoral Norte, Universidad de la República, Paysandú, Uruguay.; MARÍA VERÓNICA CESIO, Grupo de Análisis de Compuestos Traza (GACT), Departamento de Química del Litoral, Facultad de Química, CENUR Litoral Norte, Universidad de la República, Paysandú, Uruguay.; CARLOS FERNANDO RIVAS GRELA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; HORACIO HEINZEN, Grupo de Análisis de Compuestos Traza (GACT), Departamento de Química del Litoral, Facultad de Química, CENUR Litoral Norte, Universidad de la República, Paysandú, Uruguay. |
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Título : |
Analytical methods for the routinely evaluation of pesticide residues in lemon fruits and by products. |
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Complemento del título : |
Research article. |
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Fecha de publicación : |
2019 |
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Fuente / Imprenta : |
SN Applied Sciences, 2019, 1: 618. |
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ISSN : |
2523-3971 |
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DOI : |
10.1007%2Fs42452-019-0626-x |
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Idioma : |
Inglés |
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Notas : |
Article history: Received: 10 October 2018 / Accepted: 16 May 2019 / Published online: 22 May 2019. |
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Contenido : |
ABSTRACT.
Citrus fruits and their by-products such as concentrated juices and essential oils are important intermediate by-products in the food industry that can selectively accumulate plant protection agrochemicals employed in their production. They are very difcult matrices for pesticide residue analysis due their high number and concentration of phytochemicals that could hamper the determinations. The fruit processing leads to the concentration/dilution or elimination of some of these natural products that change totally the nature of the matrix where the pesticides partition unevenly. Looking at the industrial process of the fruit, a unifed vision for the pesticide residues analysis throughout the lemon fruit chain production, useful for the routine analysis of the above mentioned three matrices is presented. The driven concept is the minimization of matrix efects through sample dilution of the concentrated by-products, either after sample treatment or not. This approach will contribute to the maintenance of the whole instrumental system. QuEChERS AOAC 2007.01 was selected as the most suitable protocol for routine determination of, residues of 16 the pesticides most commonly used in the fruits during the citrus production through liquid chromatography coupled to tandem mass spectrometry (LC?MS/MS). The same protocol was applied for pesticide residue analysis in concentrated juice after diluting 4 times the sample to minimize the matrix efects. For the analysis of lemon essential oils, the dilution and shoot procedure proved to be useful for LC?MS/MS and gas chromatography?mass spectrometry determination. The three methodologies were validated following SANTE guidelines, with quantitation limits below the established European Union and Codex Alimentarius maximum residue limits. The developed methodologies are useful tools for the routine control analysis of pesticide residues in lemon matrices, allowing high sample throughput and enhancing labs productivity.
© Springer Nature Switzerland AG MenosABSTRACT.
Citrus fruits and their by-products such as concentrated juices and essential oils are important intermediate by-products in the food industry that can selectively accumulate plant protection agrochemicals employed in their production. They are very difcult matrices for pesticide residue analysis due their high number and concentration of phytochemicals that could hamper the determinations. The fruit processing leads to the concentration/dilution or elimination of some of these natural products that change totally the nature of the matrix where the pesticides partition unevenly. Looking at the industrial process of the fruit, a unifed vision for the pesticide residues analysis throughout the lemon fruit chain production, useful for the routine analysis of the above mentioned three matrices is presented. The driven concept is the minimization of matrix efects through sample dilution of the concentrated by-products, either after sample treatment or not. This approach will contribute to the maintenance of the whole instrumental system. QuEChERS AOAC 2007.01 was selected as the most suitable protocol for routine determination of, residues of 16 the pesticides most commonly used in the fruits during the citrus production through liquid chromatography coupled to tandem mass spectrometry (LC?MS/MS). The same protocol was applied for pesticide residue analysis in concentrated juice after diluting 4 times the sample to minimize the matrix efects. For the analysis of lemon e... Presentar Todo |
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Palabras claves : |
CONCENTRATED LEMON JUICE; ESSENTIAL OILS; GC–MS; LC–MS/MS; LEMON FRUIT; PESTICIDE RESIDUES. |
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Asunto categoría : |
F01 Cultivo |
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Marc : |
LEADER 02922naa a2200289 a 4500
001 1059939
005 2019-07-10
008 2019 bl uuuu u00u1 u #d
022 $a2523-3971
024 7 $a10.1007%2Fs42452-019-0626-x$2DOI
100 1 $aBESIL, N.
245 $aAnalytical methods for the routinely evaluation of pesticide residues in lemon fruits and by products.$h[electronic resource]
260 $c2019
500 $aArticle history: Received: 10 October 2018 / Accepted: 16 May 2019 / Published online: 22 May 2019.
520 $aABSTRACT. Citrus fruits and their by-products such as concentrated juices and essential oils are important intermediate by-products in the food industry that can selectively accumulate plant protection agrochemicals employed in their production. They are very difcult matrices for pesticide residue analysis due their high number and concentration of phytochemicals that could hamper the determinations. The fruit processing leads to the concentration/dilution or elimination of some of these natural products that change totally the nature of the matrix where the pesticides partition unevenly. Looking at the industrial process of the fruit, a unifed vision for the pesticide residues analysis throughout the lemon fruit chain production, useful for the routine analysis of the above mentioned three matrices is presented. The driven concept is the minimization of matrix efects through sample dilution of the concentrated by-products, either after sample treatment or not. This approach will contribute to the maintenance of the whole instrumental system. QuEChERS AOAC 2007.01 was selected as the most suitable protocol for routine determination of, residues of 16 the pesticides most commonly used in the fruits during the citrus production through liquid chromatography coupled to tandem mass spectrometry (LC?MS/MS). The same protocol was applied for pesticide residue analysis in concentrated juice after diluting 4 times the sample to minimize the matrix efects. For the analysis of lemon essential oils, the dilution and shoot procedure proved to be useful for LC?MS/MS and gas chromatography?mass spectrometry determination. The three methodologies were validated following SANTE guidelines, with quantitation limits below the established European Union and Codex Alimentarius maximum residue limits. The developed methodologies are useful tools for the routine control analysis of pesticide residues in lemon matrices, allowing high sample throughput and enhancing labs productivity. © Springer Nature Switzerland AG
653 $aCONCENTRATED LEMON JUICE
653 $aESSENTIAL OILS
653 $aGC–MS
653 $aLC–MS/MS
653 $aLEMON FRUIT
653 $aPESTICIDE RESIDUES
700 1 $aREZENDE, S.
700 1 $aALONZO, N.
700 1 $aCESIO, M.V.
700 1 $aRIVAS, F.
700 1 $aHEINZEN, H.
773 $tSN Applied Sciences, 2019, 1: 618.
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INIA Las Brujas (LB) |
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| Acceso al texto completo restringido a Biblioteca INIA Treinta y Tres. Por información adicional contacte bibliott@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
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Fecha actual : |
12/09/2014 |
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Actualizado : |
11/02/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
A - 2 |
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Autor : |
PARUELO, J.M.; PIÑEIRO, G.; BALDI, G.; BAEZA, S.; LEZAMA, F.; ALTESOR, A.; OESTERHELD, M. |
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Afiliación : |
FELIPE LEZAMA HUERTA, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay. |
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Título : |
Carbon stocks and fluxes in rangelands of the Río de la plata basin. |
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Fecha de publicación : |
2010 |
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Fuente / Imprenta : |
Rangeland Ecology & Management, 2010, v. 63, no. 1 p. 94-108. |
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Volumen : |
63 |
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ISSN : |
1551-5028 |
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DOI : |
10.2111/08-055.1 |
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Idioma : |
Inglés |
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Notas : |
Article history: Manuscript received 17 March 2008; manuscript accepted 3 April 2009. |
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Contenido : |
ABSTRACT:
Grasslands are one of the most modified biomes on Earth. Land use changes had a large impact on carbon (C) stocks of grasslands. Understanding the impact of land use/land cover changes on C stocks and fluxes is critical to evaluate the potential of rangeland ecosystem as C sinks. In this article we analyze C stocks and fluxes across the environmental gradients of one of the most extensive temperate rangeland areas: the Rio de la Plata Grasslands (RPG) in South America. The analysis summarizes information provided by field studies, remote sensing estimates, and modeling exercises. Average estimates of aboveground net primary production ( ANPP) ranged from 240 to 316 gC · m~2 · yr"1. Estimates of belowgro und NPP(BNPP) were more variable than ANPP and ranged from 264 to 568 g C · m~2 · yr"1. Total Carbon ranged from 5 004 to 15 008 g C · m~2. Plant biomass contribution to Total Carbon averaged 13 % and varied from 9.5% to 27% among sites. The largest plant C stock corresponded to belowground biomass. Aboveground green biomass represented less than 7% of the plant C. Soil organic carbon (SOC) was concentrated in the slow and passive compartments of the organic matter. Active soil pool represented only 6.7% of the SOC. The understanding of C dynamics and stocks in the RPG grasslands is still partial and incomplete. Field estimates of ANPP and BNPP are scarce, and they are not based on a common measurement protocol. Remotely sensed techniques have the potential to generate a coherent and spatially explicit database on ANPP. However, more work is needed to improve estimates of the spatial and temporal variability of radiation use efficiency. The absence of a flux tower network restricts the ability to track seasonal changes in C uptake and to understand fine-scale controls of C dynamics. MenosABSTRACT:
Grasslands are one of the most modified biomes on Earth. Land use changes had a large impact on carbon (C) stocks of grasslands. Understanding the impact of land use/land cover changes on C stocks and fluxes is critical to evaluate the potential of rangeland ecosystem as C sinks. In this article we analyze C stocks and fluxes across the environmental gradients of one of the most extensive temperate rangeland areas: the Rio de la Plata Grasslands (RPG) in South America. The analysis summarizes information provided by field studies, remote sensing estimates, and modeling exercises. Average estimates of aboveground net primary production ( ANPP) ranged from 240 to 316 gC · m~2 · yr"1. Estimates of belowgro und NPP(BNPP) were more variable than ANPP and ranged from 264 to 568 g C · m~2 · yr"1. Total Carbon ranged from 5 004 to 15 008 g C · m~2. Plant biomass contribution to Total Carbon averaged 13 % and varied from 9.5% to 27% among sites. The largest plant C stock corresponded to belowground biomass. Aboveground green biomass represented less than 7% of the plant C. Soil organic carbon (SOC) was concentrated in the slow and passive compartments of the organic matter. Active soil pool represented only 6.7% of the SOC. The understanding of C dynamics and stocks in the RPG grasslands is still partial and incomplete. Field estimates of ANPP and BNPP are scarce, and they are not based on a common measurement protocol. Remotely sensed techniques have the potential to gener... Presentar Todo |
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Palabras claves : |
ABOVEGROUND NET PRIMARY PRODUCTION; BELOWGROUND NET PRIMARY PRODUCTION; CENTURY MODEL; CUENCA DEL RIO DE LA PLATA; LAND USE - LAND COVER CHANGES; REMOTE SENSING. |
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Thesagro : |
CARBONO; MEDICIONES; MODELOS MATEMATICOS; PASTIZALES; TELEDETECCION. |
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Asunto categoría : |
F40 Ecología vegetal |
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Marc : |
LEADER 02971naa a2200385 a 4500
001 1050201
005 2019-02-11
008 2010 bl uuuu u00u1 u #d
022 $a1551-5028
024 7 $a10.2111/08-055.1$2DOI
100 1 $aPARUELO, J.M.
245 $aCarbon stocks and fluxes in rangelands of the Río de la plata basin.$h[electronic resource]
260 $c2010
300 $a63
490 $v63
500 $aArticle history: Manuscript received 17 March 2008; manuscript accepted 3 April 2009.
520 $aABSTRACT: Grasslands are one of the most modified biomes on Earth. Land use changes had a large impact on carbon (C) stocks of grasslands. Understanding the impact of land use/land cover changes on C stocks and fluxes is critical to evaluate the potential of rangeland ecosystem as C sinks. In this article we analyze C stocks and fluxes across the environmental gradients of one of the most extensive temperate rangeland areas: the Rio de la Plata Grasslands (RPG) in South America. The analysis summarizes information provided by field studies, remote sensing estimates, and modeling exercises. Average estimates of aboveground net primary production ( ANPP) ranged from 240 to 316 gC · m~2 · yr"1. Estimates of belowgro und NPP(BNPP) were more variable than ANPP and ranged from 264 to 568 g C · m~2 · yr"1. Total Carbon ranged from 5 004 to 15 008 g C · m~2. Plant biomass contribution to Total Carbon averaged 13 % and varied from 9.5% to 27% among sites. The largest plant C stock corresponded to belowground biomass. Aboveground green biomass represented less than 7% of the plant C. Soil organic carbon (SOC) was concentrated in the slow and passive compartments of the organic matter. Active soil pool represented only 6.7% of the SOC. The understanding of C dynamics and stocks in the RPG grasslands is still partial and incomplete. Field estimates of ANPP and BNPP are scarce, and they are not based on a common measurement protocol. Remotely sensed techniques have the potential to generate a coherent and spatially explicit database on ANPP. However, more work is needed to improve estimates of the spatial and temporal variability of radiation use efficiency. The absence of a flux tower network restricts the ability to track seasonal changes in C uptake and to understand fine-scale controls of C dynamics.
650 $aCARBONO
650 $aMEDICIONES
650 $aMODELOS MATEMATICOS
650 $aPASTIZALES
650 $aTELEDETECCION
653 $aABOVEGROUND NET PRIMARY PRODUCTION
653 $aBELOWGROUND NET PRIMARY PRODUCTION
653 $aCENTURY MODEL
653 $aCUENCA DEL RIO DE LA PLATA
653 $aLAND USE - LAND COVER CHANGES
653 $aREMOTE SENSING
700 1 $aPIÑEIRO, G.
700 1 $aBALDI, G.
700 1 $aBAEZA, S.
700 1 $aLEZAMA, F.
700 1 $aALTESOR, A.
700 1 $aOESTERHELD, M.
773 $tRangeland Ecology & Management, 2010$gv. 63, no. 1 p. 94-108.
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