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Artículo

Detection of unintended stress effects based on a metabonomic study in tomato fruits after treatment with carbofuran pesticide. Capabilities of MCR-ALS applied to LC-MS three-way data arrays

Sánchez Pérez, I.; Culzoni, Maria JuliaIcon ; Siano, Gabriel GermanIcon ; Gil García, MagdalenaIcon ; Goicoechea, Hector CasimiroIcon ; Martínez Galera, M.
Fecha de publicación: 2009
Editorial: American Chemical Society
Revista: Analytical Chemistry
ISSN: 0003-2700
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Química Analítica

Resumen

A chemometric strategy based on multivariate curve resolution and alternating least-squares (MCR-ALS) applied to LC-MS three-way data arrays has been developed to perform a metabonomic study in tomato (Lycopersicon esculentum) fruits (cultivar Rambo) following treatment with carbofuran. This methodology has proved to be adequate for the detection of unintended stress effects due to the previous treatment with this pesticide. MCR-ALS was performed on augmented matrices built with the LC-MS three-way data obtained from treated and nontreated samples through the sampling time. The strategy allowed us to obtain the concentration and spectra profiles of the main components (previously estimated with the SVD algorithm) from samples treated with pesticide as well as from blank samples, showing how they vary with time after plants treatment with the pesticide. In addition, a simple resolved mass spectrum was obtained corresponding to the peaks of a particular component in all matrices, thus avoiding ambiguity in the compound identity assignment. Different time profiles were found for some metabolites in treated and nontreated samples, which demonstrate that the presence of pesticide causes changes thorough time in the behavior of certain endogenous tomato metabolites as a result of physiological stress
Palabras clave: CARBOFURAN , PESTICIDE , DETECTION , METABONOMIC
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/104063
URL: http://pubs.acs.org/doi/abs/10.1021/ac901119h
DOI: http://dx.doi.org/10.1021/ac901119h
Colecciones
Articulos(CCT - SANTA FE)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - SANTA FE
Articulos(IQUIR)
Articulos de INST.DE QUIMICA ROSARIO
Citación
Sánchez Pérez, I.; Culzoni, Maria Julia; Siano, Gabriel German; Gil García, Magdalena; Goicoechea, Hector Casimiro; et al.; Detection of unintended stress effects based on a metabonomic study in tomato fruits after treatment with carbofuran pesticide. Capabilities of MCR-ALS applied to LC-MS three-way data arrays; American Chemical Society; Analytical Chemistry; 81; 20; 2009; 8335-8346
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