Prosopis alba exudate gum as new carrier agent for obtaining powdered Hibiscus sabdariffa aqueous extracts by spray drying

VASILE, FRANCO EMANUEL; ARCHAINA, DIEGO ALBERTO; JIMÉNEZ-GUZMÁN, JAIME; GUTIÉRREZ-LÓPEZ, GUSTAVO FIDEL; ALAMILLA-BELTRÁN, LILIANA; MAZZOBRE, MARÍA FLORENCIA

POWDER TECHNOLOGY

ELSEVIER SCIENCE SA

Año: 2023

0032-5910

The objective of this work was to assess the functional behavior of Prosopis alba exudate gum (G) as component of rich in antioxidant pigments powders. For this purpose, the physical, morphological, structural, chromatic, biological and stability properties of spray dried aqueous extracts of Hibiscus sabdariffa were described for different ratios of maltodextrin and G, and opportunely compared with gum arabic (GA). Powders containing G showed low moisture (4.9 % ds.), low water activity (aw95 %) and small (~25 μm) spherical-shaped particles, with a glass transition temperature (Tg = 52 °C), similar than to those containing GA. Phenolic compounds, naturally present in G, improved the storage stability of Hibiscus extract pigments contributing to the preservation of the antioxidant properties. Results encourage considering G as a promising alternative for GA, with the subsequent benefits stemmed from adding value to an underutilized resource and importation substitution.