| Autor: |
Fernanda Carvalho, de Santana, Lucillia Rabelo, de Oliveira Torres, Fernanda Branco, Shinagawa, Ana Mara, de Oliveira E Silva, Luciana Tedesco, Yoshime, Illana Louise Pereira, de Melo, Paulo Sergio, Marcellini, Jorge, Mancini-Filho |
| Rok vydání: |
2017 |
| Předmět: |
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| Zdroj: |
Journal of food science and technology. 54(11) |
| ISSN: |
0022-1155 |
| Popis: |
The conditions for the solid–liquid extraction of the antioxidant polyphenol compounds from yellow passion fruit seeds were optimized by response surface methodology with the following variables as the extraction parameters: extraction time (12.8–147.2 min), ethanol concentration (13–97%), and temperature (16.4–83.6 °C). The polyphenol content and antioxidant capacity, which were assessed by the 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity, oxygen radical absorbance capacity, β-carotene bleaching assay, and ferric reducing antioxidant power assay, were considered dependent variables. The association of the dependent variables was effective for explaining the effect of the independent variables within a determination coefficient (R2) range of 0.88–0.96. A moderate-to-strong correlation for the polyphenol content and antioxidant capacity by the investigated methods was established, and optimized conditions were employed to maximize this response. Extraction was carried out at 80 °C using 70% ethanol concentration for 30 min, which was the most efficient condition to obtain an extract with high concentrations of polyphenolic compounds (3.12 g gallic acid equivalent/100 g seed dry basis) and a strong antioxidant capacity. The stilbene piceatannol was the major compound identified by liquid chromatography-electrospray ionization-tandem mass spectrometry (3.68 g/100 g seed dry basis). These results reinforce that agro-industrial waste demonstrates potential as a source of bioactive compounds, with implications in human health as well as in food and chemical industries. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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