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Biblioteca (s) : |
INIA Treinta y Tres. |
Fecha : |
11/01/2021 |
Actualizado : |
18/03/2022 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
PEREIRA, M.; TISSOT, F.; FACCIO, R.; IBÁÑEZ, F.; PISTÓN, M. |
Afiliación : |
MÓNICA PEREIRA, Universidad de la República, Facultad de Química, Montevideo, Uruguay.Grupo de Análisis de Elementos Traza y Desarrollo de Estrategias Simples para Preparación de Muestras (GATPREM).; FLORENCIA TISSOT, Universidad de la República, Facultad de Química, Montevideo, Uruguay.Grupo de Análisis de Elementos Traza y Desarrollo de Estrategias Simples para Preparación de Muestras (GATPREM).; RICARDO FACCIO, Universidad de la República, Montevideo, Uruguay. Facultad de Química. Área Física and Centro NanoMat.; FACUNDO IBÁÑEZ SILVA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MARIELA PISTÓN, Universidad de la República, Facultad de Química, Montevideo, Uruguay.Grupo de Análisis de Elementos Traza y Desarrollo de Estrategias Simples para Preparación de Muestras (GATPREM). |
Título : |
A simple and economical ultrasound-assisted method for Cd and Pb extraction from fruits and vegetables for food safety assurance. [Open Access]. |
Fecha de publicación : |
2021 |
Fuente / Imprenta : |
Results in Chemistry, Volume 3, Number 100089 2021, Doi: https://doi.org/10.1016/j.rechem.2020.100089 |
DOI : |
10.1016/j.rechem.2020.100089 |
Idioma : |
Inglés |
Notas : |
Article history: Received 12 October 2020 / Accepted 16 December 2020 /
Corresponding author: mpiston@fq.edu.uy |
Contenido : |
Ultrasound-assisted extraction (UAE) methods for food analysis are recognized as being in accordance with the principles of green analytical chemistry (GAC). Reference standard methods generally use microwave-assisted extraction (MAE) for sample digestion; however, the use of ultrasonication processes has many advantages. Herein, a simple, and economical method for the determination of Cd and Pb in fruits and vegetables for food safety monitoring is reported. This method was optimized using a standard reference material (SRM, spinach leaves) through a multivariate experimental design (optimal conditions: 0.5 g of sample, 15 min of sonication, and 20.00 mL of 2.5 mol L−1 HNO3) and subsequently validated. The limits of detection obtained were one or two orders of magnitude lower than those achieved with MAE, making this a promising technique for contaminants monitoring. The UAE method was then tested on vegetable samples (apples, carrots, tomatoes, and lettuce) obtained from commercial sources in Uruguay and a comparison was made with samples treated by MAE. Both processes yielded comparable results, and the levels of Cd and Pb in all samples were below the maximum allowed concentration (MAC) established by the World Health Organization (WHO). In addition, to provide insight into the mechanism by which the ultrasonic process aids extraction, confocal optical images of the surface of the SRM were obtained. The leaves were examined after treatment at different sonication times (5?20 min). The confocal microscopy images show the effects of the ultrasonic treatment on the plant tissue, including desaturation, erosion, and abrasion, which increased with increasing sonication time. In conclusion, the UAE method meets and overcome the requirements of a standard method for food safety assurance. MenosUltrasound-assisted extraction (UAE) methods for food analysis are recognized as being in accordance with the principles of green analytical chemistry (GAC). Reference standard methods generally use microwave-assisted extraction (MAE) for sample digestion; however, the use of ultrasonication processes has many advantages. Herein, a simple, and economical method for the determination of Cd and Pb in fruits and vegetables for food safety monitoring is reported. This method was optimized using a standard reference material (SRM, spinach leaves) through a multivariate experimental design (optimal conditions: 0.5 g of sample, 15 min of sonication, and 20.00 mL of 2.5 mol L−1 HNO3) and subsequently validated. The limits of detection obtained were one or two orders of magnitude lower than those achieved with MAE, making this a promising technique for contaminants monitoring. The UAE method was then tested on vegetable samples (apples, carrots, tomatoes, and lettuce) obtained from commercial sources in Uruguay and a comparison was made with samples treated by MAE. Both processes yielded comparable results, and the levels of Cd and Pb in all samples were below the maximum allowed concentration (MAC) established by the World Health Organization (WHO). In addition, to provide insight into the mechanism by which the ultrasonic process aids extraction, confocal optical images of the surface of the SRM were obtained. The leaves were examined after treatment at different sonication t... Presentar Todo |
Palabras claves : |
CONFOCAL OPTICAL MICROSCOPY; FOOD SAFETY; PLATAFORMA AGROALIMENTOS. |
Asunto categoría : |
-- |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/14924/1/Results-in-Chemistry-2021-3-10089.pdf
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Marc : |
LEADER 02714naa a2200229 a 4500 001 1061662 005 2022-03-18 008 2021 bl uuuu u00u1 u #d 024 7 $a10.1016/j.rechem.2020.100089$2DOI 100 1 $aPEREIRA, M. 245 $aA simple and economical ultrasound-assisted method for Cd and Pb extraction from fruits and vegetables for food safety assurance. [Open Access].$h[electronic resource] 260 $c2021 500 $aArticle history: Received 12 October 2020 / Accepted 16 December 2020 / Corresponding author: mpiston@fq.edu.uy 520 $aUltrasound-assisted extraction (UAE) methods for food analysis are recognized as being in accordance with the principles of green analytical chemistry (GAC). Reference standard methods generally use microwave-assisted extraction (MAE) for sample digestion; however, the use of ultrasonication processes has many advantages. Herein, a simple, and economical method for the determination of Cd and Pb in fruits and vegetables for food safety monitoring is reported. This method was optimized using a standard reference material (SRM, spinach leaves) through a multivariate experimental design (optimal conditions: 0.5 g of sample, 15 min of sonication, and 20.00 mL of 2.5 mol L−1 HNO3) and subsequently validated. The limits of detection obtained were one or two orders of magnitude lower than those achieved with MAE, making this a promising technique for contaminants monitoring. The UAE method was then tested on vegetable samples (apples, carrots, tomatoes, and lettuce) obtained from commercial sources in Uruguay and a comparison was made with samples treated by MAE. Both processes yielded comparable results, and the levels of Cd and Pb in all samples were below the maximum allowed concentration (MAC) established by the World Health Organization (WHO). In addition, to provide insight into the mechanism by which the ultrasonic process aids extraction, confocal optical images of the surface of the SRM were obtained. The leaves were examined after treatment at different sonication times (5?20 min). The confocal microscopy images show the effects of the ultrasonic treatment on the plant tissue, including desaturation, erosion, and abrasion, which increased with increasing sonication time. In conclusion, the UAE method meets and overcome the requirements of a standard method for food safety assurance. 653 $aCONFOCAL OPTICAL MICROSCOPY 653 $aFOOD SAFETY 653 $aPLATAFORMA AGROALIMENTOS 700 1 $aTISSOT, F. 700 1 $aFACCIO, R. 700 1 $aIBÁÑEZ, F. 700 1 $aPISTÓN, M. 773 $tResults in Chemistry, Volume 3, Number 100089 2021, Doi: https://doi.org/10.1016/j.rechem.2020.100089
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INIA Treinta y Tres (TT) |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas; INIA Tacuarembó. |
Fecha actual : |
21/02/2014 |
Actualizado : |
01/06/2016 |
Tipo de producción científica : |
Serie Técnica |
Autor : |
LANFRANCO, B.; OIS PATISSON, C.; BEDAT INNELLA, A. (Ed.). |
Afiliación : |
BRUNO ANTONIO LANFRANCO CRESPO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; CECILIA OIS PATISSON, Economista. Egresada de la Facultad de Ciencias Económicas y Administración. Universidad de la República.; ALINA BEDAT INNELLA, Economista. Egresada de la Facultad de Ciencias Económicas y Administración. Universidad de la República. |
Título : |
Variabilidad de corto plazo en la formación de precios en el mercado vacuno de reposición |
Fecha de publicación : |
2006 |
Fuente / Imprenta : |
Montevideo (Uruguay): INIA, 2006. |
Páginas : |
58 p. |
Serie : |
(INIA Serie Técnica ; 155) |
ISBN : |
9974-38-219-X |
ISSN : |
1688-9266 |
Idioma : |
Español |
Palabras claves : |
DEMANDA POR CARACTERISTICAS; DIFERENCIACION DE PRODUCTOS; MERCADO DE HACIENDAS; PRECIOS HEDONICOS. |
Thesagro : |
GANADO DE CARNE; PRECIOS; PRECIOS DE MERCADO; VALOR ECONOMICO. |
Asunto categoría : |
-- |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/2900/1/111219240807150227.pdf
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Marc : |
LEADER 00780nam a2200265 a 4500 001 1003282 005 2016-06-01 008 2006 bl uuuu u00u1 u #d 020 $a9974-38-219-X 022 $a1688-9266 100 1 $aLANFRANCO, B. 245 $aVariabilidad de corto plazo en la formación de precios en el mercado vacuno de reposición 260 $aMontevideo (Uruguay): INIA$c2006 300 $a58 p. 490 $a(INIA Serie Técnica ; 155) 650 $aGANADO DE CARNE 650 $aPRECIOS 650 $aPRECIOS DE MERCADO 650 $aVALOR ECONOMICO 653 $aDEMANDA POR CARACTERISTICAS 653 $aDIFERENCIACION DE PRODUCTOS 653 $aMERCADO DE HACIENDAS 653 $aPRECIOS HEDONICOS 700 1 $aOIS PATISSON, C. 700 1 $aBEDAT INNELLA, A.
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