Optimization of the Extraction of Antioxidant Compounds from Roselle Hibiscus Calyxes (Hibiscus sabdariffa), as a Source of Nutraceutical Beverages

 

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Detalles Bibliográficos
Autores: Villalobos-Vega, Maria José, Rodríguez-Rodríguez, Gerardo, Armijo-Montes, Orlando, Jimenez-Bonilla, Pablo, Álvarez Valverde, Víctor
Formato: artículo
Fecha de Publicación:2023
Descripción:Secondary metabolites from Hibiscus sabdariffa have been used to prevent different diseases. Roselle Hibiscus is known for being rich in phenolic bioactive compounds. The extraction conditions are directly related to the chemical composition and then to the overall bioactivity of the extract. In this study, a Box-Behnken experimental design has been used to optimize the antioxidant activity, considering four variables: ethanol:water ratio, temperature, extraction time, and solvent:solid ratio. The experiment comprises 27 experiments and 3 repetitions at the central point. The results are described by surface response analysis and a second-degree polynomial equation. The model explains 87% of the variation in the response. The maximum antioxidant activity is yielded when 1% solids are extracted in 35.5% ethanol at 60 ◦C for 33 min. Finally, a nutritional functional supplement of 495 μmol Trolox Equivalent (TE) antioxidant capacity was prepared with the optimized extract.
País:Repositorio UNA
Institución:Universidad Nacional de Costa Rica
Repositorio:Repositorio UNA
Lenguaje:Inglés
OAI Identifier:oai:null:11056/25365
Acceso en línea:http://hdl.handle.net/11056/25365
Palabra clave:PRODUCTOS NATURALES
ANTIOXIDANTE
FENOLES
ENFERMEDADES
HIBISCUS SABDARIFFA
ANTIOXIDANT
DISEASES