Antioxidative activity of gold and platinum nanoparticles assessed through electron spin resonance
Fuente:
Redalyc
Salvato in:
| Autore principale: | |
|---|---|
| Natura: | Artículo científico |
| Lingua: | en |
| Pubblicazione: |
Universidade Estadual Paulista Júlio de Mesquita Filho
2021
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1876441731061252096 |
|---|---|
| author | Angela Kinoshita |
| author_facet | Angela Kinoshita |
| contents | Antioxidative activity of gold and platinum nanoparticles assessed through electron spin resonance Angela Kinoshita Iara Lima Éder José Guidelli Oswaldo Baffa Filho Química DPPH antioxidative Gold nanoparticle platinum nanoparticle Gold nanoparticle (AuNP) is a well-known biocompatible structure with several biomedical applications for labeling, heating, and sensing, besides delivery of drugs to cells. Similarly, platinum nanoparticles (PtNPs) have important applications in medicine. Traditional applications of these nanoparticles in medicine/biomedicine depend on their physical-chemical properties. In this work, a preliminary study of the antioxidative properties of AuNP and PtNP was performed using electron spin resonance (ESR) spectroscopy. Antioxidant activity against DPPH (1,1-diphenyl-2-picrylhydrazyl) radical was found for both nanoparticles, but the PtNP was more reactive than the AuNP to reduce the DPPH ESR signal. The decay time for the signal intensity was T = 3.1 ± 0.1 min–1 for AuNP and T = 1.80 ± 0.07 min–1 for PtNP. 2021 artículo científico 0100-4670 https://www.redalyc.org/articulo.oa?id=42966701007 https://www.redalyc.org/journal/429/42966701007/ https://www.redalyc.org/journal/429/42966701007/html/ https://www.redalyc.org/journal/429/42966701007/42966701007.epub https://www.redalyc.org/journal/429/42966701007/movil https://doi.org/10.26850/1678-4618eqj.v46.1SI.2021.p68-74 en http://www.redalyc.org/revista.oa?id=429 Eclética Química application/pdf Universidade Estadual Paulista Júlio de Mesquita Filho Eclética Química (Brasil) Vol.46 |
| format | Artículo científico |
| id | redalyc_42966701007 |
| institution | Redalyc |
| language | en |
| publishDate | 2021 |
| publisher | Universidade Estadual Paulista Júlio de Mesquita Filho |
| spellingShingle | Antioxidative activity of gold and platinum nanoparticles assessed through electron spin resonance Angela Kinoshita Química DPPH antioxidative Gold nanoparticle platinum nanoparticle Antioxidative activity of gold and platinum nanoparticles assessed through electron spin resonance Angela Kinoshita Iara Lima Éder José Guidelli Oswaldo Baffa Filho Química DPPH antioxidative Gold nanoparticle platinum nanoparticle Gold nanoparticle (AuNP) is a well-known biocompatible structure with several biomedical applications for labeling, heating, and sensing, besides delivery of drugs to cells. Similarly, platinum nanoparticles (PtNPs) have important applications in medicine. Traditional applications of these nanoparticles in medicine/biomedicine depend on their physical-chemical properties. In this work, a preliminary study of the antioxidative properties of AuNP and PtNP was performed using electron spin resonance (ESR) spectroscopy. Antioxidant activity against DPPH (1,1-diphenyl-2-picrylhydrazyl) radical was found for both nanoparticles, but the PtNP was more reactive than the AuNP to reduce the DPPH ESR signal. The decay time for the signal intensity was T = 3.1 ± 0.1 min–1 for AuNP and T = 1.80 ± 0.07 min–1 for PtNP. 2021 artículo científico 0100-4670 https://www.redalyc.org/articulo.oa?id=42966701007 https://www.redalyc.org/journal/429/42966701007/ https://www.redalyc.org/journal/429/42966701007/html/ https://www.redalyc.org/journal/429/42966701007/42966701007.epub https://www.redalyc.org/journal/429/42966701007/movil https://doi.org/10.26850/1678-4618eqj.v46.1SI.2021.p68-74 en http://www.redalyc.org/revista.oa?id=429 Eclética Química application/pdf Universidade Estadual Paulista Júlio de Mesquita Filho Eclética Química (Brasil) Vol.46 |
| title | Antioxidative activity of gold and platinum nanoparticles assessed through electron spin resonance |
| topic | Química DPPH antioxidative Gold nanoparticle platinum nanoparticle |
| url | https://www.redalyc.org/articulo.oa?id=42966701007 https://www.redalyc.org/journal/429/42966701007/ https://www.redalyc.org/journal/429/42966701007/html/ https://www.redalyc.org/journal/429/42966701007/42966701007.epub https://www.redalyc.org/journal/429/42966701007/movil https://doi.org/10.26850/1678-4618eqj.v46.1SI.2021.p68-74 |