Author(s): Pereira, Débora Tamires Vitor, 1988- ; Tarone, Adriana Gadioli, 1985- ; Cazarin, Cinthia Baú Betim, 1979- ; Martínez, Julian, 1976-
Date: 2019
Persistent ID: https://hdl.handle.net/20.500.12733/1649096
Origin: Oasisbr
Subject(s): Uva; Modelagem matemática; Compostos fenólicos; Antocianinas; Grapes; Anthocyanins; Phenolic compounds; Mathematical modeling; PLE; Antioxidant capacity; Artigo original
Agradecimentos: The authors wish to thank CAPES (AUXPE-PROEX 087/2016), CNPq (13241/2016-2) for support in form of a scholarship and FAPESP (2015/11932-7) for the financial support. The authors thank Espaço da Escrita- Pró-Reitoria de Pesquisa - UNICAMP - for the language services provided
Abstract: Extracts rich in monomeric anthocyanins (MAC) and total phenolic compounds (TPC) were obtained from grape marc by Pressurized Liquid Extraction (PLE). PLE was performed using ethanol and water mixtures (acidified or not) (50% w/w), pure ethanol and acidified water at temperatures from 40 to 100 °C. The best PLE conditions for MAC extraction (ethanol-water pH 2.0 [50% w/w]) resulted in 10.21 mg of malvidin-3-O-glucoside/g of dried grape marc (dr). Fifteen anthocyanins were identified and quantified in PLE extracts by UHPLC-UV-Vis. PLE with ethanol-water (50% w/w) as solvent at 100 °C achieved the highest TPC content (65.68 mg GAE/g dr) and antioxidant capacity by ORAC (772.11 µmol TE/g dr) and FRAP (1452 mg TE/g dr) among the evaluated conditions. Based on the results for extraction of monomeric anthocyanins and phenolics compounds, a sequential PLE process was performed and proved to be viable for the recovery of two different extract fractions
CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQ
FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP
COORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIOR - CAPES
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