2024-03-28T18:08:52Zhttp://uvadoc.uva.es/oai/requestoai:uvadoc.uva.es:10324/460742021-06-24T07:44:39Zcom_10324_31661com_10324_952com_10324_894col_10324_31662
Impregnation of açaí residue extracts in silica-aerogel
Buratto, Rafaella Theodoro
Hoyos, Edwin G.
Cocero Alonso, María José
Martín, Ángel
Euterpe oleracea Mart
Extracción por microondas
Aerogel de sílice
Silica aerogel
23 Química
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)
2021-04-08T10:08:29Z
2021-04-08T10:08:29Z
2019
info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
Journal of Supercritical Fluids, 2019, vol. 146, p. 120-127
0896-8446
http://uvadoc.uva.es/handle/10324/46074
10.1016/j.supflu.2018.12.004
120
127
The Journal of Supercritical Fluids
146
eng
https://www.sciencedirect.com/science/article/pii/S0896844618306168
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
© 2019 Elsevier
application/pdf
Elsevier
https://uvadoc.uva.es/bitstream/10324/46074/5/Impregnation-A%c3%a7ai-Residue-Extracts.pdf.jpg
Hispana
TEXT
http://creativecommons.org/licenses/by-nc-nd/4.0/
UVaDOC. Repositorio Documental de la Universidad de Valladolid
http://uvadoc.uva.es/handle/10324/46074