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Use of a Taguchi Design in <i>Hibiscus sabdariffa</i> Extracts Encapsulated by Spray-Drying
oleh: Migdalia Sarahy Navidad-Murrieta, Alejandro Pérez-Larios, Jorge Alberto Sanchéz-Burgos, Juan Arturo Ragazzo-Sánchez, Gabriel Luna-Bárcenas, Sonia G. Sáyago-Ayerdi
| Format: | Article |
|---|---|
| Diterbitkan: | MDPI AG 2020-01-01 |
Deskripsi
Aqueous and ethanolic extracts of <i>Hibiscus sabdariffa</i> were spray-dried using maltodextrin (MD) and gum arabic (GA) as carrier agents. A Taguchi L8 experimental design with seven variables was implemented. Physicochemical properties in the encapsulates were evaluated by Ultraviolet-Visible (UV-Vis,) X-ray Diffraction (XRD), spectroscopy and gravimetric techniques. Treatments with aqueous extracts showed the highest concentration of total soluble polyphenols (TSP) 32.12−21.23 mg equivalent gallic acid (EAG)/g dry weight (DW), and antioxidant capacity (AOX) in the 2,2-azinobis-3-ethylbenzotiazoline-6-sulfonic acid (ABTS) assay. The best treatment for TSP and AOX was T4: 2.5% <i>Hibiscus</i> <i>w</i>/<i>w</i>, aqueous extract, decoction, extract-to-carrier ratio 1:1 (<i>w</i>/<i>w</i>), proportion to carriers (MD:GA) 80:20 (<i>w</i>/<i>w</i>), 10,000 rpm, 150 °C. The Taguchi L8 design is a tool that allows the use of multiple variables with a low number of treatments that indicate the drying conditions that give the best parameters, focusing mainly on TSP and AOX, also, it is a good alternative for the preservation and stability of the phenolic compoudns in <i>Hibiscus</i>.