ZnO-based nanofungicides: Synthesis, characterization and their effect on the coffee fungi Mycena citricolor and Colletotrichum sp.

Arciniegas-Grijalba, P.A.; Patiño-Portela, M.C.; Mosquera-Sánchez, L.P.; Sierra, Beatriz Elena Guerra; Muñoz-Flórez, Jaime Eduardo; Erazo-Castillo, L.A.; Páez, Jorge Enrique Rodríguez

doi:10.1016/j.msec.2019.01.031

Cited by 56 publications

(14 citation statements)

References 72 publications

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“…79-0206. Similar planes were reported for ZnO-NPs by other authors [88][89][90]. Besides, these nanoparticles showed a small but noticeable peak at 46°, indicating the presence of interstitial zinc in the ZnO lattices [91].…”

Section: X-ray Diffraction Analysissupporting

confidence: 87%

Pectin-Based Films with Cocoa Bean Shell Waste Extract and ZnO/Zn-NPs with Enhanced Oxygen Barrier, Ultraviolet Screen and Photocatalytic Properties

Mellinas

Jiménez

Garrigós

2020

Foods

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In this work, pectin-based active films with a cocoa bean shell extract, obtained after waste valorisation of residues coming from the chocolate production process, and zinc oxide/zinc nanoparticles (ZnO/Zn-NPs) at different concentrations, were obtained by casting. The effect of the active additive incorporation on the thermal, barrier, structural, morphological and optical properties was investigated. Moreover, the photocatalytic properties of the obtained films based on the decomposition of methylene blue (MB) in aqueous solution at room temperature were also studied. A significant increase in thermal and oxidative stability was obtained with the incorporation of 3 wt% of ZnO/Zn-NPs compared to the control film. The addition of 5 wt% cocoa bean shell extract to pectin significantly affected the oxygen barrier properties due to a plasticizing effect. In contrast, the addition of ZnO/Zn-NPs at 1 wt% to pectin caused a decrease in oxygen transmission rate per film thickness (OTR.e) values of approximately 50% compared to the control film, resulting in an enhanced protection against oxidation for food preservation. The optical properties were highly influenced by the incorporation of the natural extract but this effect was mitigated when nanoparticles were also incorporated into pectin-based films. The addition of the extract and nanoparticles resulted in a clear improvement (by 98%) in UV barrier properties, which could be important for packaged food sensitive to UV radiation. Finally, the photocatalytic activity of the developed films containing nanoparticles was demonstrated, showing photodegradation efficiency values of nearly 90% after 60 min at 3 wt% of ZnO/Zn-NPs loading. In conclusion, the obtained pectin-based bionanocomposites with cocoa bean shell waste extract and zinc oxide/zinc nanoparticles showed great potential to be used as active packaging for food preservation.

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Section: X-ray Diffraction Analysissupporting

confidence: 87%

Pectin-Based Films with Cocoa Bean Shell Waste Extract and ZnO/Zn-NPs with Enhanced Oxygen Barrier, Ultraviolet Screen and Photocatalytic Properties

Mellinas

Jiménez

Garrigós

2020

Foods

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“…In addition, ZnO-based and phytofabricated ZnO NPs have also been reported as nanofungicides to manage plant pathogens. 88,143 All these studies suggest that the biosynthesis of nanobiofungicides is cheaper and more environmentally sustainable and stable than using chemical synthesis methods. Chitin/chitosan-based stimulus responsive nanopreparations can release active nanopesticides more accurately and effectively and adopt targeted delivery or controlled-release mechanism.…”

Section: Nanotechnology In Fungicidesmentioning

confidence: 99%

Nanobiopesticides in sustainable agriculture: developments, challenges, and perspectives

Pan

Guo

Zhai

et al. 2023

Environ. Sci.: Nano

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“…Para ilustrar el efecto de las ZnO-NPs en ciertos sistemas biológicos, se indican a continuación resultados obtenidos recientemente en nuestro laboratorio después de una rigurosa observancia de los protocolos establecidos para realizar los ensayos correspondientes, los cuales se describen detalladamente en los artículos publicados y en los trabajos referenciados. Además, las ZnO-NPs empleadas se sintetizaron en nuestro laboratorio siguiendo rutas químicas, como el método diol (Patiño-Portela, et al, 2021;Arciniegas-Grijalba, et al, 2019;Erazo, et al, 2019), el sol-gel (Arciniegas-Grijalba, et al, 2017, el complejo polimérico de Pechini (Vargas, et al, 2021), o precipitación controlada (Rodríguez-Páez, 2013; Rodríguez-Páez, et al, 2019).…”

Section: Resultados Experimentales Que Evidencian La Capacidad Antifúngica Y Antibacterial De Las Zno-npsunclassified

Nano-biointerface entre semiconductor y membrana celular: fenómenos fisicoquímicos implicados en la nanotoxicidad y la capacidad antifúngica de las nanopartículas de óxido de cinc

Páez

2021

Rev. Acad. Colomb. Cienc. Ex. Fis. Nat.

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La aplicación de la nanotecnología, específicamente de las nanopartículas en campos como la medicina, la remediación medioambiental y la agricultura pasa por conocer y entender las interacciones que ocurren entre estas y el sistema biológico, para lo cual es necesario abordar el estudio de la nano-biointerface. Con base en resultados obtenidos en el estudio de la capacidad antifúngica y antibacterial de las nanopartículas de óxido de cinc (ZnO-NPs), se hizo una revisión de ciertos fenómenos fisicoquímicos que podrían ocurrir en la interface entre semiconductor y membrana celular y explicarían la acción de dichas nanopartículas. Concretamente, se analizaron los efectos de la naturaleza semiconductora del ZnO y la existencia de defectos puntuales en el sólido, así como de las interacciones de tipo entrópico, sobre un sistema biológico. Con base en estos procesos fisicoquímicos, se estructuraron modelos cualitativos de mecanismos que permitirían explicar los efectos de la presencia de las ZnO-NPs en cultivos de diversos hongos (Omphalia sp., Colletotrichum sp. y Phoma sp.), tales como la inhibición de su crecimiento y la alteración de su ultraestructura, y de la bacteria Escherichia coli, en la cual causarían la inhibición del crecimiento hasta en un ⁓70 % y una concentración mínima inhibitoria (CMI50) de 30,40 µg/mL, sin incidencia de radiación UV.

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ZnO-based nanofungicides: Synthesis, characterization and their effect on the coffee fungi Mycena citricolor and Colletotrichum sp.

Cited by 56 publications

References 72 publications

Pectin-Based Films with Cocoa Bean Shell Waste Extract and ZnO/Zn-NPs with Enhanced Oxygen Barrier, Ultraviolet Screen and Photocatalytic Properties

Pectin-Based Films with Cocoa Bean Shell Waste Extract and ZnO/Zn-NPs with Enhanced Oxygen Barrier, Ultraviolet Screen and Photocatalytic Properties

Nanobiopesticides in sustainable agriculture: developments, challenges, and perspectives

Nano-biointerface entre semiconductor y membrana celular: fenómenos fisicoquímicos implicados en la nanotoxicidad y la capacidad antifúngica de las nanopartículas de óxido de cinc

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