Impregnation of açaí residue extracts in silica-aerogel
| Autor: | María José Cocero, Edwin G. Hoyos, Ángel Martín, Rafaella T. Buratto |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Euterpe oleracea Mart
General Chemical Engineering Silica aerogel 02 engineering and technology Berry engineering.material Residue (chemistry) 0404 agricultural biotechnology Aerogel de sílice 23 Química Extracción por microondas Physical and Theoretical Chemistry Chromatography Chemistry Pulp (paper) Supercritical drying Aerogel 04 agricultural and veterinary sciences 021001 nanoscience & nanotechnology Condensed Matter Physics 040401 food science Polyphenol Slurry engineering 0210 nano-technology |
| Zdroj: | UVaDOC: Repositorio Documental de la Universidad de Valladolid Universidad de Valladolid UVaDOC. Repositorio Documental de la Universidad de Valladolid instname |
| DOI: | 10.1016/j.supflu.2018.12.004 |
| Popis: | Producción Científica Açaí (Euterpe Oleracea mart.) is a berry found in Amazon Rainforest, with a high content of polyphenols and flavonoids. This work studied the formulation of bioactive compounds extracted from E. Oleracea fruit, by impregnation in silica-aerogel. Three fruit fractions were studied: pulp, seeds and slurry, and two extracts were obtained from each fraction: an oil fraction obtained by Soxhlet extraction, and a polyphenolic-rich extract obtained by Pressurized Microwave Assisted Extraction. With pulp oil, impregnation yields of 58.6% were obtained by air drying, with surface area of 0.7687 m²/g, while with supercritical drying method, the impregnation yield decreased to 15.3%, with surface area of 823.4 m²/g. This indicates a loss of oil by extraction during drying. With pulp extract, the best result was obtained using indirect wet impregnation and supercritical drying, with 16.4% of impregnation. By release assay, contents of 2.276 mg/g(aerogel) of polyphenols and 0.197 mg/g(aerogel) of anthocyanins were identified. Conselho Nacional de Desenvolvimento Científico e Tecnológico – CNPq, Brazil (200737/2015-5). Doctoral scholarship Ministerio de Economía y Competitividad (CTQ2016-79777-R) |
| Databáze: | OpenAIRE |
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