On the natural fate of maleic hydrazide. Kinetic aspects of the photochemical and microbiological degradation of the herbicide
- Autores
- Pajares, Adriana Mabel; Bregliani, Mabel Margarita; Massad, Walter Alfredo; Natera, Jose Eduardo; Challier, Cecilia; Boiero, María Laura; Montenegro, Mariana Angélica; Garcia, Norman Andino
- Año de publicación
- 2014
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Kinetic and mechanistic aspects of the photochemical and microbiological degradation of the herbicide Maleic Hydrazide (MH) have been studied. Riboflavin (Rf, vitamin B2) was employed as a main photosensitizer whereas Humic Acid (HA) was included as a second sensitizer in order to more closely simulate natural environmental conditions. MH quenches excited singlet and triplet states of Rf, with rate constants close to the diffusion limit. The herbicide and dissolved molecular oxygen competitively quench triplet excited Rf. As a consequence the reactive oxygen species (ROS), superoxide radical anion (O2-), hydrogen peroxide (H2O2) and singlet molecular oxygen (O2(1Δg)) are produced by electron- and energy-transfer processes, respectively, as demonstrated by auxiliary experiments employing selective auxiliary quenchers and the exclusive O2(1Δg) generator Rose Bengal (RB). As a global result, the photodegradation of Rf is retarded, whereas MH is degraded by the generated ROS. The bacteria Pseudomonas aeruginosa (Ps) and Bacillus subtilis (Bs), recognized as contaminants surface-water and soil and microbial antagonists of phytopathogenic, were used in the microbiological experiments. Results of the individual incubation of both bacteria in in the presence of MH indicate a stimulation on the Ps growth, implying the biodegradation of the herbicide, whereas MH only exerted a bacteriostatic effect on Bs.
Fil: Pajares, Adriana Mabel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Patagonia; Argentina. Universidad Nacional de la Patagonia Austral; Argentina
Fil: Bregliani, Mabel Margarita. Universidad Nacional de la Patagonia Austral; Argentina
Fil: Massad, Walter Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina
Fil: Natera, Jose Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina
Fil: Challier, Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina
Fil: Boiero, María Laura. Universidad Tecnologica Nacional. Facultad Regional Villa Maria; Argentina
Fil: Montenegro, Mariana Angélica. Universidad Tecnologica Nacional. Facultad Regional Villa Maria; Argentina. Universidad Nacional de Villa María. Instituto Académico Pedagógico de Ciencias Básicas y Aplicadas; Argentina
Fil: Garcia, Norman Andino. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina - Materia
-
BIODEGRADATION
HUMIC ACID
MALEIC HYDRAZIDE
PHOTODEGRADATION
RIBOFLAVIN - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/33511
Ver los metadatos del registro completo
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CONICET Digital (CONICET) |
spelling |
On the natural fate of maleic hydrazide. Kinetic aspects of the photochemical and microbiological degradation of the herbicidePajares, Adriana MabelBregliani, Mabel MargaritaMassad, Walter AlfredoNatera, Jose EduardoChallier, CeciliaBoiero, María LauraMontenegro, Mariana AngélicaGarcia, Norman AndinoBIODEGRADATIONHUMIC ACIDMALEIC HYDRAZIDEPHOTODEGRADATIONRIBOFLAVINhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Kinetic and mechanistic aspects of the photochemical and microbiological degradation of the herbicide Maleic Hydrazide (MH) have been studied. Riboflavin (Rf, vitamin B2) was employed as a main photosensitizer whereas Humic Acid (HA) was included as a second sensitizer in order to more closely simulate natural environmental conditions. MH quenches excited singlet and triplet states of Rf, with rate constants close to the diffusion limit. The herbicide and dissolved molecular oxygen competitively quench triplet excited Rf. As a consequence the reactive oxygen species (ROS), superoxide radical anion (O2-), hydrogen peroxide (H2O2) and singlet molecular oxygen (O2(1Δg)) are produced by electron- and energy-transfer processes, respectively, as demonstrated by auxiliary experiments employing selective auxiliary quenchers and the exclusive O2(1Δg) generator Rose Bengal (RB). As a global result, the photodegradation of Rf is retarded, whereas MH is degraded by the generated ROS. The bacteria Pseudomonas aeruginosa (Ps) and Bacillus subtilis (Bs), recognized as contaminants surface-water and soil and microbial antagonists of phytopathogenic, were used in the microbiological experiments. Results of the individual incubation of both bacteria in in the presence of MH indicate a stimulation on the Ps growth, implying the biodegradation of the herbicide, whereas MH only exerted a bacteriostatic effect on Bs.Fil: Pajares, Adriana Mabel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Patagonia; Argentina. Universidad Nacional de la Patagonia Austral; ArgentinaFil: Bregliani, Mabel Margarita. Universidad Nacional de la Patagonia Austral; ArgentinaFil: Massad, Walter Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; ArgentinaFil: Natera, Jose Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; ArgentinaFil: Challier, Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; ArgentinaFil: Boiero, María Laura. Universidad Tecnologica Nacional. Facultad Regional Villa Maria; ArgentinaFil: Montenegro, Mariana Angélica. Universidad Tecnologica Nacional. Facultad Regional Villa Maria; Argentina. Universidad Nacional de Villa María. Instituto Académico Pedagógico de Ciencias Básicas y Aplicadas; ArgentinaFil: Garcia, Norman Andino. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; ArgentinaElsevier Science Sa2014-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/33511Pajares, Adriana Mabel; Bregliani, Mabel Margarita; Massad, Walter Alfredo; Natera, Jose Eduardo; Challier, Cecilia; et al.; On the natural fate of maleic hydrazide. Kinetic aspects of the photochemical and microbiological degradation of the herbicide; Elsevier Science Sa; Journal of Photochemistry and Photobiology B: Biology; 135; 4-2014; 48-541011-1344CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jphotobiol.2014.04.002info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S101113441400102Xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:20:47Zoai:ri.conicet.gov.ar:11336/33511instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:20:47.723CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
On the natural fate of maleic hydrazide. Kinetic aspects of the photochemical and microbiological degradation of the herbicide |
title |
On the natural fate of maleic hydrazide. Kinetic aspects of the photochemical and microbiological degradation of the herbicide |
spellingShingle |
On the natural fate of maleic hydrazide. Kinetic aspects of the photochemical and microbiological degradation of the herbicide Pajares, Adriana Mabel BIODEGRADATION HUMIC ACID MALEIC HYDRAZIDE PHOTODEGRADATION RIBOFLAVIN |
title_short |
On the natural fate of maleic hydrazide. Kinetic aspects of the photochemical and microbiological degradation of the herbicide |
title_full |
On the natural fate of maleic hydrazide. Kinetic aspects of the photochemical and microbiological degradation of the herbicide |
title_fullStr |
On the natural fate of maleic hydrazide. Kinetic aspects of the photochemical and microbiological degradation of the herbicide |
title_full_unstemmed |
On the natural fate of maleic hydrazide. Kinetic aspects of the photochemical and microbiological degradation of the herbicide |
title_sort |
On the natural fate of maleic hydrazide. Kinetic aspects of the photochemical and microbiological degradation of the herbicide |
dc.creator.none.fl_str_mv |
Pajares, Adriana Mabel Bregliani, Mabel Margarita Massad, Walter Alfredo Natera, Jose Eduardo Challier, Cecilia Boiero, María Laura Montenegro, Mariana Angélica Garcia, Norman Andino |
author |
Pajares, Adriana Mabel |
author_facet |
Pajares, Adriana Mabel Bregliani, Mabel Margarita Massad, Walter Alfredo Natera, Jose Eduardo Challier, Cecilia Boiero, María Laura Montenegro, Mariana Angélica Garcia, Norman Andino |
author_role |
author |
author2 |
Bregliani, Mabel Margarita Massad, Walter Alfredo Natera, Jose Eduardo Challier, Cecilia Boiero, María Laura Montenegro, Mariana Angélica Garcia, Norman Andino |
author2_role |
author author author author author author author |
dc.subject.none.fl_str_mv |
BIODEGRADATION HUMIC ACID MALEIC HYDRAZIDE PHOTODEGRADATION RIBOFLAVIN |
topic |
BIODEGRADATION HUMIC ACID MALEIC HYDRAZIDE PHOTODEGRADATION RIBOFLAVIN |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Kinetic and mechanistic aspects of the photochemical and microbiological degradation of the herbicide Maleic Hydrazide (MH) have been studied. Riboflavin (Rf, vitamin B2) was employed as a main photosensitizer whereas Humic Acid (HA) was included as a second sensitizer in order to more closely simulate natural environmental conditions. MH quenches excited singlet and triplet states of Rf, with rate constants close to the diffusion limit. The herbicide and dissolved molecular oxygen competitively quench triplet excited Rf. As a consequence the reactive oxygen species (ROS), superoxide radical anion (O2-), hydrogen peroxide (H2O2) and singlet molecular oxygen (O2(1Δg)) are produced by electron- and energy-transfer processes, respectively, as demonstrated by auxiliary experiments employing selective auxiliary quenchers and the exclusive O2(1Δg) generator Rose Bengal (RB). As a global result, the photodegradation of Rf is retarded, whereas MH is degraded by the generated ROS. The bacteria Pseudomonas aeruginosa (Ps) and Bacillus subtilis (Bs), recognized as contaminants surface-water and soil and microbial antagonists of phytopathogenic, were used in the microbiological experiments. Results of the individual incubation of both bacteria in in the presence of MH indicate a stimulation on the Ps growth, implying the biodegradation of the herbicide, whereas MH only exerted a bacteriostatic effect on Bs. Fil: Pajares, Adriana Mabel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Patagonia; Argentina. Universidad Nacional de la Patagonia Austral; Argentina Fil: Bregliani, Mabel Margarita. Universidad Nacional de la Patagonia Austral; Argentina Fil: Massad, Walter Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina Fil: Natera, Jose Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina Fil: Challier, Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina Fil: Boiero, María Laura. Universidad Tecnologica Nacional. Facultad Regional Villa Maria; Argentina Fil: Montenegro, Mariana Angélica. Universidad Tecnologica Nacional. Facultad Regional Villa Maria; Argentina. Universidad Nacional de Villa María. Instituto Académico Pedagógico de Ciencias Básicas y Aplicadas; Argentina Fil: Garcia, Norman Andino. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina |
description |
Kinetic and mechanistic aspects of the photochemical and microbiological degradation of the herbicide Maleic Hydrazide (MH) have been studied. Riboflavin (Rf, vitamin B2) was employed as a main photosensitizer whereas Humic Acid (HA) was included as a second sensitizer in order to more closely simulate natural environmental conditions. MH quenches excited singlet and triplet states of Rf, with rate constants close to the diffusion limit. The herbicide and dissolved molecular oxygen competitively quench triplet excited Rf. As a consequence the reactive oxygen species (ROS), superoxide radical anion (O2-), hydrogen peroxide (H2O2) and singlet molecular oxygen (O2(1Δg)) are produced by electron- and energy-transfer processes, respectively, as demonstrated by auxiliary experiments employing selective auxiliary quenchers and the exclusive O2(1Δg) generator Rose Bengal (RB). As a global result, the photodegradation of Rf is retarded, whereas MH is degraded by the generated ROS. The bacteria Pseudomonas aeruginosa (Ps) and Bacillus subtilis (Bs), recognized as contaminants surface-water and soil and microbial antagonists of phytopathogenic, were used in the microbiological experiments. Results of the individual incubation of both bacteria in in the presence of MH indicate a stimulation on the Ps growth, implying the biodegradation of the herbicide, whereas MH only exerted a bacteriostatic effect on Bs. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-04 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/33511 Pajares, Adriana Mabel; Bregliani, Mabel Margarita; Massad, Walter Alfredo; Natera, Jose Eduardo; Challier, Cecilia; et al.; On the natural fate of maleic hydrazide. Kinetic aspects of the photochemical and microbiological degradation of the herbicide; Elsevier Science Sa; Journal of Photochemistry and Photobiology B: Biology; 135; 4-2014; 48-54 1011-1344 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/33511 |
identifier_str_mv |
Pajares, Adriana Mabel; Bregliani, Mabel Margarita; Massad, Walter Alfredo; Natera, Jose Eduardo; Challier, Cecilia; et al.; On the natural fate of maleic hydrazide. Kinetic aspects of the photochemical and microbiological degradation of the herbicide; Elsevier Science Sa; Journal of Photochemistry and Photobiology B: Biology; 135; 4-2014; 48-54 1011-1344 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jphotobiol.2014.04.002 info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S101113441400102X |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier Science Sa |
publisher.none.fl_str_mv |
Elsevier Science Sa |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844614191823978496 |
score |
13.070432 |