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	Provedor de dados Anais da ABC (AABC) (2) Autor GRANATO,DANIEL (2) BASSANI,DÉBORA C. (1) MOREIRA,FERNANDA (1) NUNES,DOMINGOS S. (1) PEDRO,ALESSANDRA C. (1) ROSSO,NEIVA D. (1) Mais... Palavra-chave Anthocyanins (1) Correlation analysis (1) Desirability function (1) Extraction (1) Functional foods (1) Phenolic composition (1) Phytochemicals (1) Pigments (1) Response surface methodology (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2016 (1) 2014 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Extraction of bioactive compounds and free radical scavenging activity of purple basil (Ocimum basilicum L.) leaf extracts as affected by temperature and time Anais da ABC (AABC) PEDRO,ALESSANDRA C.; MOREIRA,FERNANDA; GRANATO,DANIEL; ROSSO,NEIVA D.. In the current study, response surface methodology (RSM) was used to assess the effects of extraction time and temperature on the content of bioactive compounds and antioxidant activity of purple basil leaf (Ocimum basilicum L.) extracts. The stability of anthocyanins in relation to temperature, light and copigmentation was also studied. The highest anthocyanin content was 67.40 mg/100 g extracted at 30 °C and 60 min. The degradation of anthocyanins with varying temperatures and in the presence of light followed a first-order kinetics and the activation energy was 44.95 kJ/mol. All the extracts exposed to light showed similar half-lives. The extracts protected from light, in the presence of copigments, showed an increase in half-life from 152.67 h for the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Anthocyanins; Extraction; Pigments; Response surface methodology. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000301055 Optimization of Phenolics and Flavonoids Extraction Conditions and Antioxidant Activity of Roasted Yerba-Mate Leaves (Ilex paraguariensis A. St.-Hil., Aquifoliaceae) using Response Surface Methodology Anais da ABC (AABC) BASSANI,DÉBORA C.; NUNES,DOMINGOS S.; GRANATO,DANIEL. This study focused on maximizing the extraction of total phenolics and flavonoids as well as the antioxidant activity measured by the 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay from roasted yerba mate (Ilex paraguariensis) as a function of time (5, 7.5 and 10 min) and temperature of extraction (60, 75 and 90°C). The data were subjected to Response Surface Methodology and the results showed that polynomial equations were significant, did not present lack of fit, and presented adjusted determination coefficients above 98%, proving their suitability for prediction purposes. Using the desirability function, the optimum operating conditions to obtain a higher extraction of antioxidants was found to be 10 min of extraction at 90°C, and the tea prepared under... Tipo: Info:eu-repo/semantics/article Palavras-chave: Phenolic composition; Correlation analysis; Desirability function; Phytochemicals; Functional foods. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000200923 Registros recuperados: 2 Primeira ... 1 ... Última

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