Microencapsulation of Turmeric Oleoresin in Binary and Ternary Blends of Gum Arabic, Maltodextrin and Modified Starch

Abstract

Spray-drying is a suitable method to obtain microencapsulated active substances in the powdered form, resulting in powders with improved protection against environmental factors as well as with higher solubility in water, as in the case of turmeric oleoresin. The present study investigated the spray-drying process of turmeric oleoresin microencapsulated with binary and ternary mixtures of different wall materials: gum Arabic, maltodextrin, and modified corn starch. A statistical simplex centroid experimental design was used considering the encapsulation efficiency, curcumin retention, process yield, water content, solubility, and particle morphology as the analyzed responses. Wall matrices containing higher proportions of modified starch and gum Arabic resulted in higher encapsulation efficiency and curcumin retention, whereas the process yield and water content increased with higher proportions of maltodextrin and gum Arabic, respectively. Regression models of the responses were obtained using a surface response method (ANOVA way), showing statistical values of R2 > 0.790. Also, mean analysis was carried out by Tukey's test, permitting to observe some statistical differences between the blends

Exploring Gunnera tinctoria: From Nutritional and Anti-Tumoral Properties to Phytosome Development Following Structural Arrangement Based on Molecular Docking

“…Additionally, a certain powder mass was diminished due to adhesion of un-encapsulated particles to the inner surface of the drying cyclone just after nozzle aspiration (drying chamber). The following fact quite justified the low product yield values obtained for some variables [ 26 ].…”

“…This parameter is affected by solution viscosity, volume of feed solution, and feeding temperature, having also into account the type of natural polymer (coating layer) and the drying conditions [ 25 ]. In the present work, the inlet temperature was set based on the natural polymer features ( Section 3.7.4 ), ranging between 115 and 130 °C, in order to reduce the moisture in the final product and enhance the formulation product yield by optimizing the inlet and outlet temperatures [ 26 ]. The product yields varied between 32.0% and 68.9%, significantly differing according to the type of natural polymer and drying conditions.…”

Influence of emulsification methods and use of colloidal silicon dioxide on the microencapsulation by spray drying of turmeric oleoresin in gelatin‐starch matrices

“…In addition, the sample S30/G1 presented slightly higher CI (0.03), suggesting that concentrations of modified starch above 30 % of the total mass of the solution provide a considerably stable emulsion. This fact is explained by the properties presented by the modified starch, such as having excellent emulsion stabilizing properties, [48][49][50][51][52] being a strong surface-active due to the long amylopectin chain. This is due to the fact that the droplets are protected against flocculation by a steric stabilization mechanism.…”

Hygroscopic, structural, and thermal properties of essential oil microparticles of sweet orange added with cellulose nanofibrils

“…Polymers of carbohydrates, highlighting gum Arabic (GA) and maltodextrin (MD), have been widely used as encapsulating agents; however, the difficulty of finding a material that provides all the requirements to act as a suitable encapsulant, makes it necessary to use them in combination. GA is highly soluble and active on the surface, widely used as matrix system in the encapsulation of oils and flavors; however, its high cost and low availability have motivated the research for alternative encapsulation matrices (Cano‐Higuita, Vélez, & Telis, ). Moreover, MD has low cost, but the lack of emulsification capacity leads to low volatile retention, due to low system viscosity (Jimenez‐Sánchez et al, ).…”