Attributes of nanoparticles obtained by green synthesis for application in antifungal coatings

Autores
Gámez Espinosa, Erasmo Junior; Deya, Marta Cecilia; Bellotti, Natalia
Año de publicación
2018
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
The green synthesis of nanoparticles based on the use of aqueous vegetable extracts islow cost, non-polluting and makes use of renewable reagents. These extracts containmetabolites that perform as reducing and stabilizing agents. In this regard, the use oftannins is promising due to their high polyphenol content. The present work proposes tosynthesize and characterize nanoparticles obtained silver and copper salts with ?tara?tannin (TT). TT is commercially available and proceeds aqueous extract of Caesalpiniaspinosa. The nanoparticles were obtained starting an aqueous solution of AgNO3 10-2 Mand Cu(NO3)2.3H2O 10-2 M to which the tannin solution was added in constantagitation. Three concentrations of TT were used: 500, 1000 and 2000 ppm. This processwas done at 60° C and pH = 7. The stability over time of these nanoparticles wasevaluated by UV-vis spectroscopy carried out at different times: 1, 30 and 60 days. Toconfirm the obtaining of the nanoparticles and observe their morphology, transmissionelectron microscopy (TEM) was applied. The synthesized nanoparticles were purified andFourier transform infrared spectroscopy (FTIR) was performed. The antifungal activity wasevaluated by the agar diffusion test (Kirby-Bauer) against the collection strains: Cladosporiumcladosporioides (MG731215), Alternaria tunuissima (MG731240) and Aspergillus versicolor (MG725821).UV-vis spectra of silver nanoparticles obtained TT solutions of 500 (NpsAg500), 1000 (NpsAg1000) and2000ppm (NpsAg2000) presented an absorption maximum around 400, 410 and 420 nm, respectively.These bands remained stable over time. In the case of copper salt the nanoparticles obtained with TTsolution of 2000ppm (NpsCu2000) showed a band at 330 nm and with 1000 and 500ppm resultedunstable. TEM micrographs confirmed the presence of quasispherical nanoparticles predominantlysmaller than 20 nm with higher frequency. FTIR spectra confirmed the strong interaction between ofthe nanoparticles and the tannin used in the synthesis. Related to the agar diffusion test, NpsCu2000was not active against the fungal strains used while the silver nanoparticles showed to be active inall cases. In this sense, NpsAg500 presented the highest inhibition zone against C. cladosporioides. Thenext step will be to formulate coatings with these nanoparticles.
Fil: Gámez Espinosa, Erasmo Junior. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones en Tecnología de Pinturas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones en Tecnología de Pinturas; Argentina
Fil: Deya, Marta Cecilia. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones en Tecnología de Pinturas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones en Tecnología de Pinturas; Argentina
Fil: Bellotti, Natalia. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones en Tecnología de Pinturas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones en Tecnología de Pinturas; Argentina
XXVII International Materials Research Congress - IMRC 2018
Cancún
México
Sociedad Mexicana de Materiales
Materia
NANOPARTICLES
ANTIFUNGAL
COATING
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/199883
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/199883
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Attributes of nanoparticles obtained by green synthesis for application in antifungal coatingsGámez Espinosa, Erasmo JuniorDeya, Marta CeciliaBellotti, NataliaNANOPARTICLESANTIFUNGALCOATINGhttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2The green synthesis of nanoparticles based on the use of aqueous vegetable extracts islow cost, non-polluting and makes use of renewable reagents. These extracts containmetabolites that perform as reducing and stabilizing agents. In this regard, the use oftannins is promising due to their high polyphenol content. The present work proposes tosynthesize and characterize nanoparticles obtained silver and copper salts with ?tara?tannin (TT). TT is commercially available and proceeds aqueous extract of Caesalpiniaspinosa. The nanoparticles were obtained starting an aqueous solution of AgNO3 10-2 Mand Cu(NO3)2.3H2O 10-2 M to which the tannin solution was added in constantagitation. Three concentrations of TT were used: 500, 1000 and 2000 ppm. This processwas done at 60° C and pH = 7. The stability over time of these nanoparticles wasevaluated by UV-vis spectroscopy carried out at different times: 1, 30 and 60 days. Toconfirm the obtaining of the nanoparticles and observe their morphology, transmissionelectron microscopy (TEM) was applied. The synthesized nanoparticles were purified andFourier transform infrared spectroscopy (FTIR) was performed. The antifungal activity wasevaluated by the agar diffusion test (Kirby-Bauer) against the collection strains: Cladosporiumcladosporioides (MG731215), Alternaria tunuissima (MG731240) and Aspergillus versicolor (MG725821).UV-vis spectra of silver nanoparticles obtained TT solutions of 500 (NpsAg500), 1000 (NpsAg1000) and2000ppm (NpsAg2000) presented an absorption maximum around 400, 410 and 420 nm, respectively.These bands remained stable over time. In the case of copper salt the nanoparticles obtained with TTsolution of 2000ppm (NpsCu2000) showed a band at 330 nm and with 1000 and 500ppm resultedunstable. TEM micrographs confirmed the presence of quasispherical nanoparticles predominantlysmaller than 20 nm with higher frequency. FTIR spectra confirmed the strong interaction between ofthe nanoparticles and the tannin used in the synthesis. Related to the agar diffusion test, NpsCu2000was not active against the fungal strains used while the silver nanoparticles showed to be active inall cases. In this sense, NpsAg500 presented the highest inhibition zone against C. cladosporioides. Thenext step will be to formulate coatings with these nanoparticles.Fil: Gámez Espinosa, Erasmo Junior. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones en Tecnología de Pinturas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones en Tecnología de Pinturas; ArgentinaFil: Deya, Marta Cecilia. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones en Tecnología de Pinturas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones en Tecnología de Pinturas; ArgentinaFil: Bellotti, Natalia. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones en Tecnología de Pinturas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones en Tecnología de Pinturas; ArgentinaXXVII International Materials Research Congress - IMRC 2018CancúnMéxicoSociedad Mexicana de MaterialesCongreso2018info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectCongresoBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/199883Attributes of nanoparticles obtained by green synthesis for application in antifungal coatings; XXVII International Materials Research Congress - IMRC 2018; Cancún; México; 2018; 1-1CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.mrs-mexico.org.mx/imrc2018/index-abstracts-authors.php?inicio=SInternacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:13:31Zoai:ri.conicet.gov.ar:11336/199883instacron: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:34982025-10-15 15:13:31.996CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Attributes of nanoparticles obtained by green synthesis for application in antifungal coatings
title Attributes of nanoparticles obtained by green synthesis for application in antifungal coatings
spellingShingle Attributes of nanoparticles obtained by green synthesis for application in antifungal coatings
Gámez Espinosa, Erasmo Junior
NANOPARTICLES
ANTIFUNGAL
COATING
title_short Attributes of nanoparticles obtained by green synthesis for application in antifungal coatings
title_full Attributes of nanoparticles obtained by green synthesis for application in antifungal coatings
title_fullStr Attributes of nanoparticles obtained by green synthesis for application in antifungal coatings
title_full_unstemmed Attributes of nanoparticles obtained by green synthesis for application in antifungal coatings
title_sort Attributes of nanoparticles obtained by green synthesis for application in antifungal coatings
dc.creator.none.fl_str_mv Gámez Espinosa, Erasmo Junior
Deya, Marta Cecilia
Bellotti, Natalia
author Gámez Espinosa, Erasmo Junior
author_facet Gámez Espinosa, Erasmo Junior
Deya, Marta Cecilia
Bellotti, Natalia
author_role author
author2 Deya, Marta Cecilia
Bellotti, Natalia
author2_role author
author
dc.subject.none.fl_str_mv NANOPARTICLES
ANTIFUNGAL
COATING
topic NANOPARTICLES
ANTIFUNGAL
COATING
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv The green synthesis of nanoparticles based on the use of aqueous vegetable extracts islow cost, non-polluting and makes use of renewable reagents. These extracts containmetabolites that perform as reducing and stabilizing agents. In this regard, the use oftannins is promising due to their high polyphenol content. The present work proposes tosynthesize and characterize nanoparticles obtained silver and copper salts with ?tara?tannin (TT). TT is commercially available and proceeds aqueous extract of Caesalpiniaspinosa. The nanoparticles were obtained starting an aqueous solution of AgNO3 10-2 Mand Cu(NO3)2.3H2O 10-2 M to which the tannin solution was added in constantagitation. Three concentrations of TT were used: 500, 1000 and 2000 ppm. This processwas done at 60° C and pH = 7. The stability over time of these nanoparticles wasevaluated by UV-vis spectroscopy carried out at different times: 1, 30 and 60 days. Toconfirm the obtaining of the nanoparticles and observe their morphology, transmissionelectron microscopy (TEM) was applied. The synthesized nanoparticles were purified andFourier transform infrared spectroscopy (FTIR) was performed. The antifungal activity wasevaluated by the agar diffusion test (Kirby-Bauer) against the collection strains: Cladosporiumcladosporioides (MG731215), Alternaria tunuissima (MG731240) and Aspergillus versicolor (MG725821).UV-vis spectra of silver nanoparticles obtained TT solutions of 500 (NpsAg500), 1000 (NpsAg1000) and2000ppm (NpsAg2000) presented an absorption maximum around 400, 410 and 420 nm, respectively.These bands remained stable over time. In the case of copper salt the nanoparticles obtained with TTsolution of 2000ppm (NpsCu2000) showed a band at 330 nm and with 1000 and 500ppm resultedunstable. TEM micrographs confirmed the presence of quasispherical nanoparticles predominantlysmaller than 20 nm with higher frequency. FTIR spectra confirmed the strong interaction between ofthe nanoparticles and the tannin used in the synthesis. Related to the agar diffusion test, NpsCu2000was not active against the fungal strains used while the silver nanoparticles showed to be active inall cases. In this sense, NpsAg500 presented the highest inhibition zone against C. cladosporioides. Thenext step will be to formulate coatings with these nanoparticles.
Fil: Gámez Espinosa, Erasmo Junior. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones en Tecnología de Pinturas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones en Tecnología de Pinturas; Argentina
Fil: Deya, Marta Cecilia. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones en Tecnología de Pinturas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones en Tecnología de Pinturas; Argentina
Fil: Bellotti, Natalia. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones en Tecnología de Pinturas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones en Tecnología de Pinturas; Argentina
XXVII International Materials Research Congress - IMRC 2018
Cancún
México
Sociedad Mexicana de Materiales
description The green synthesis of nanoparticles based on the use of aqueous vegetable extracts islow cost, non-polluting and makes use of renewable reagents. These extracts containmetabolites that perform as reducing and stabilizing agents. In this regard, the use oftannins is promising due to their high polyphenol content. The present work proposes tosynthesize and characterize nanoparticles obtained silver and copper salts with ?tara?tannin (TT). TT is commercially available and proceeds aqueous extract of Caesalpiniaspinosa. The nanoparticles were obtained starting an aqueous solution of AgNO3 10-2 Mand Cu(NO3)2.3H2O 10-2 M to which the tannin solution was added in constantagitation. Three concentrations of TT were used: 500, 1000 and 2000 ppm. This processwas done at 60° C and pH = 7. The stability over time of these nanoparticles wasevaluated by UV-vis spectroscopy carried out at different times: 1, 30 and 60 days. Toconfirm the obtaining of the nanoparticles and observe their morphology, transmissionelectron microscopy (TEM) was applied. The synthesized nanoparticles were purified andFourier transform infrared spectroscopy (FTIR) was performed. The antifungal activity wasevaluated by the agar diffusion test (Kirby-Bauer) against the collection strains: Cladosporiumcladosporioides (MG731215), Alternaria tunuissima (MG731240) and Aspergillus versicolor (MG725821).UV-vis spectra of silver nanoparticles obtained TT solutions of 500 (NpsAg500), 1000 (NpsAg1000) and2000ppm (NpsAg2000) presented an absorption maximum around 400, 410 and 420 nm, respectively.These bands remained stable over time. In the case of copper salt the nanoparticles obtained with TTsolution of 2000ppm (NpsCu2000) showed a band at 330 nm and with 1000 and 500ppm resultedunstable. TEM micrographs confirmed the presence of quasispherical nanoparticles predominantlysmaller than 20 nm with higher frequency. FTIR spectra confirmed the strong interaction between ofthe nanoparticles and the tannin used in the synthesis. Related to the agar diffusion test, NpsCu2000was not active against the fungal strains used while the silver nanoparticles showed to be active inall cases. In this sense, NpsAg500 presented the highest inhibition zone against C. cladosporioides. Thenext step will be to formulate coatings with these nanoparticles.
publishDate 2018
dc.date.none.fl_str_mv 2018
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
Congreso
Book
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
status_str publishedVersion
format conferenceObject
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/199883
Attributes of nanoparticles obtained by green synthesis for application in antifungal coatings; XXVII International Materials Research Congress - IMRC 2018; Cancún; México; 2018; 1-1
CONICET Digital
CONICET
url http://hdl.handle.net/11336/199883
identifier_str_mv Attributes of nanoparticles obtained by green synthesis for application in antifungal coatings; XXVII International Materials Research Congress - IMRC 2018; Cancún; México; 2018; 1-1
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.mrs-mexico.org.mx/imrc2018/index-abstracts-authors.php?inicio=S
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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
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dc.coverage.none.fl_str_mv Internacional
dc.publisher.none.fl_str_mv Congreso
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reponame_str CONICET Digital (CONICET)
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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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