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Value-added salad dressing enriched with red onion skin anthocyanins entrapped in different biopolymers

In this study, red onion skin extract was used to obtain food ingredients. Complex biopolymeric matrices were dissolved in the anthocyanin-rich aqueous extract, followed by gelation and freeze-drying. Powders were characterized regarding encapsulation efficiency (EE), phytochemical content, color, a...

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Detalles Bibliográficos
Autores principales: Stoica, Florina, Condurache, Nina Nicoleta, Aprodu, Iuliana, Andronoiu, Doina Georgeta, Enachi, Elena, Stănciuc, Nicoleta, Bahrim, Gabriela Elena, Croitoru, Constantin, Râpeanu, Gabriela
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9240365/
https://www.ncbi.nlm.nih.gov/pubmed/35782960
http://dx.doi.org/10.1016/j.fochx.2022.100374
Descripción
Sumario:In this study, red onion skin extract was used to obtain food ingredients. Complex biopolymeric matrices were dissolved in the anthocyanin-rich aqueous extract, followed by gelation and freeze-drying. Powders were characterized regarding encapsulation efficiency (EE), phytochemical content, color, antioxidant activity, and microstructure. Storage and simulated digestion stability were also assessed. Two powders with high contents of bioactives and antioxidant activity were obtained. The highest EE was acquired for the powder with a higher polysaccharides concentration (V2). In addition, V2 exhibited the best storage stability. The in vitro studies demonstrated that increased carbohydrate concentration delivers the best anthocyanins protection. To prove its functionality, V2 was added to a salad dressing. The addition of powder has improved the concentration of biologically active compounds and the antioxidant activity of the salad dressings. These results support the assumption that microencapsulation may deliver bioactives from red onion skin as functional ingredients for value-added foods.