Výsledky vyhledávání - "Renato G. Peres"

Akademický článek

HPLC-DAD-ESI/MS Identification and Quantification of Phenolic Compounds in Ilex paraguariensis Beverages and On-Line Evaluation of Individual Antioxidant Activity

Autor: Delia B. Rodriguez-Amaya, Marina F. M. Tavares, Fernando G. Tonin, Renato G. Peres

Publikováno v: Molecules, Vol 18, Iss 4, Pp 3859-3871 (2013)

“Chimarrão” and “tererê” are maté (dried, toasted and milled Ilex paraguariensis leaves and stemlets) beverages widely consumed in South America. This paper describes the application of HPLC-DAD-ESI/MS method for the identification and qua

Externí odkaz: https://doaj.org/article/9dda30639b364163bf1e91b572097f64

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HPLC-DAD-ESI/MS Identification and Quantification of Phenolic Compounds in Ilex paraguariensis Beverages and On-Line Evaluation of Individual Antioxidant Activity

Autor: Marina Franco Maggi Tavares, Fernando Gustavo Tonin, Delia B. Rodriguez-Amaya, Renato G. Peres

Publikováno v: Molecules, Vol 18, Iss 4, Pp 3859-3871 (2013)
Molecules
Molecules; Volume 18; Issue 4; Pages: 3859-3871
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

“Chimarrao” and “terere” are mate (dried, toasted and milled Ilex paraguariensis leaves and stemlets) beverages widely consumed in South America. This paper describes the application of HPLC-DAD-ESI/MS method for the identification and quanti

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb6862b4947d6ef2a72babd580f10758
http://www.mdpi.com/1420-3049/18/4/3859

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Determination of catechins in green tea infusions by reduced flow micellar electrokinetic chromatography

Autor: Fernando Gustavo Tonin, Delia B. Rodriguez-Amaya, Renato G. Peres, Marina Franco Maggi Tavares

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

A sulfated-β-cyclodextrin (s-β-CD) modified reduced flow micellar electrokinetic chromatography (RF-MEKC) method was developed and validated for the determination of catechins in green tea. The optimal electrolyte consisted of 0.2% triethylamine, 5

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::12fbe5235e297ea521ec84b75ee541bb
https://doi.org/10.1016/j.foodchem.2010.12.104

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Multivariant optimization, validation, and application of capillary electrophoresis for simultaneous determination of polyphenols and phenolic acids in Brazilian wines

Autor: Marina Franco Maggi Tavares, Gustavo Amadeu Micke, Renato G. Peres, Delia B. Rodriguez-Amaya

Publikováno v: Journal of Separation Science. 32:3822-3828

A method for the simultaneous determination of the stilbene resveratrol, four phenolic acids (syringic, coumaric, caffeic, and gallic acids), and five flavonoids (catechin, rutin, kaempferol, myricetin, and quercetin) in wine by CE was developed and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1ba9ae7b73f27aebd67ffba2894548b9
https://doi.org/10.1002/jssc.200900312

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Determination of phenolic acids in coffee by micellar electrokinetic chromatography

Autor: Jaime Amaya-Farfan, Renato G. Peres, Eder Muller Risso

Publikováno v: Food Chemistry. 105:1578-1582

A seven-minute micellar electrokinetic chromatography analytical procedure capable of resolving the five principal phenolic acids in coffee, including the isomers of 5-caffeoylquinic acid (5-CQA), 4-CQA and 3-CQA, caffeic acid and ferulic acid is rep

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::183d6215c0057a49101f5920b5212efd
https://doi.org/10.1016/j.foodchem.2007.03.028

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UPGRADING OF SUGAR CANE BAGASSE BY THERMAL PROCESSES. 7. CATALYTIC LIQUEFACTION IN MONOETHANOLAMINE (MEA) AND PRELIMINARY FRACTIONATION OF THE OBTAINED PRODUCTS

Autor: Renato G. Peres, Fernando Mauro Lanças

Publikováno v: Fuel Science and Technology International. 14:963-977

The liquefaction of sugar cane bagasse in monoethanolamine (MEA) in the presence of catalysts (zeolite A, non-zeolitic aluminosilicate and zinc chloride) as well as in the absence of catalysts is described in this paper. The influence of the catalyst

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b1fb87aa2c13481b5dc2b0576a530415
https://doi.org/10.1080/08843759608947623

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Multivariant optimization, validation, and application of capillary electrophoresis for simultaneous determination of polyphenols and phenolic acids in Brazilian wines

Autor: Renato G, Peres, Gustavo A, Micke, Marina F M, Tavares, Delia B, Rodriguez-Amaya

Publikováno v: Journal of separation science. 32(21)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::44fe111802f1dd116e08ab4947b23d65
https://pubmed.ncbi.nlm.nih.gov/19877139

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Rapid method for the determination of organic acids in wine by capillary electrophoresis with indirect UV detection

Autor: Renato G. Peres, Fernando Gustavo Tonin, Edgar P. Moraes, Marina Franco Maggi Tavares, Delia B. Rodriguez-Amaya, Gustavo Amadeu Micke

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

A capillary electrophoresis method for organic acids in wine was developed and validated. The optimal electrolyte consisted of 10 mmol/L 3,5-dinitrobenzoic acid (DNB) at pH 3.6 containing 0.2 mmol/L cetyltrimethylammonium bromide as flow reverser. DN

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e8f4122614fed5b375ddacc493496f9a

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