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Akademický článek

Oxidation capacity of the city air of Santiago, Chile

Autor: Y. F. Elshorbany, R. Kurtenbach, P. Wiesen, E. Lissi, M. Rubio, G. Villena, E. Gramsch, A. R. Rickard, M. J. Pilling, J. Kleffmann

Publikováno v: Atmospheric Chemistry and Physics, Vol 9, Iss 6, Pp 2257-2273 (2009)

The oxidation capacity of the highly polluted urban area of Santiago, Chile has been evaluated during a summer measurement campaign carried out from 8–20 March 2005. The hydroxyl (OH) radical budget was evaluated employing a simple quasi-photostati

Externí odkaz: https://doaj.org/article/3b3aec3c3a2043ec9872ec288b026bfd

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Controversial alkoxyl and peroxyl radical scavenging activity of the tryptophan metabolite 3-hydroxy-anthranilic acid

Autor: Eduardo Pino, Alexis Aspée, Eva Dorta, Camilo López-Alarcón, E. Lissi, L. González

Publikováno v: Biomedicine & Pharmacotherapy. 90:332-338

3-Hydroxy-anthranilic acid (3-OHAA), a tryptophan metabolite produced in the kynurenine pathway, is an efficient antioxidant towards peroxyl radicals (ROO ) derived from the AAPH (2,2′-azobis(2-amidinopropane) dihydrochloride) thermolysis. However,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ca20eb81531257b5296ae919338516cc
https://doi.org/10.1016/j.biopha.2017.03.082

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Oxidation of free, peptide and protein tryptophan residues mediated by AAPH-derived free radicals: role of alkoxyl and peroxyl radicals

Autor: Eduardo Silva, Camilo López-Alarcón, Eduardo Pino, Eva Dorta, Hernán Speisky, Eduardo Fuentes-Lemus, Michael J. Davies, E. Lissi, Elizabeth Sánchez Escobar, M. L. Abasq, Alexis Aspée

Publikováno v: RSC Advances. 6:57948-57955

The oxidation of tryptophan (Trp) residues, mediated by peroxyl radicals (ROO˙), follows a complex mechanism involving free radical intermediates, and short chain reactions. The reactivity of Trp towards ROO˙ should be strongly affected by its incl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4c12cee0805232c0f23781be728e00ad
https://doi.org/10.1039/c6ra12859a

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Comparison of different techniques for the preservation and extraction of phlorotannins in the kelp Lessonia spicata (Phaeophyceae): assays of DPPH, ORAC-PGR, and ORAC-FL as testing methods

Autor: Edgardo Cruces, E. Lissi, Eduardo Ramírez-Kushel, Camilo López-Alarcón, Iván Gómez, Elias Atala, Y. Rojas-Lillo

Publikováno v: Journal of Applied Phycology. 28:573-580

Preservation, storage, and safe transport of samples are key factors affecting brown algal phlorotannin (phenolics) quantification, their extraction yield, and antioxidant activity. This is especially relevant when field sampling is carried out in re

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0e2a3706925c2abaf6ced55009c94715
https://doi.org/10.1007/s10811-015-0602-9

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Antioxidant capacity of phenolic compounds in acidic medium: A pyrogallol red-based ORAC (oxygen radical absorbance capacity) assay

Autor: E. Lissi, Alexis Aspée, Camilo López-Alarcón, Hernán Speisky, Elias Atala

Publikováno v: JOURNAL OF FOOD COMPOSITION AND ANALYSIS
Artículos CONICYT
CONICYT Chile
instacron:CONICYT

A novel ORAC (oxygen radical absorbance capacity) assay to assess antioxidant capacity of phenolic compounds in near-gastric conditions (pH 2.0) is presented. AAPH (2,2′-azo-bis(2-amidinopropane)dihydrochloride) was used as peroxyl radicals source,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b3dc10dbc0d6e1860f205da5164c3ab0
https://doi.org/10.1016/j.jfca.2013.09.007

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