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Abstract Mucilage of Aloe vera (Aloe barbadensis Miller) is an alternative agent for microencapsulation by spray drying of labile bioactives, such as gallic acid. The microstructure of powders prepared with… Click to show full abstract
Abstract Mucilage of Aloe vera (Aloe barbadensis Miller) is an alternative agent for microencapsulation by spray drying of labile bioactives, such as gallic acid. The microstructure of powders prepared with Aloe vera and maltodextrin (used for comparison purposes) with and without gallic acid revealed defined and undamaged particles. Aloe vera particles without gallic acid exhibited a quasi-modal distribution while the gallic acid loaded samples presented a bimodal distribution (i.e., particle size of 2–3 μm). In maltodextrin samples, the particle size presented a modal distribution (with and without gallic acid), but the mean particle size was almost ten times larger than that of Aloe vera (about 20 μm), as reflected in the low viscosity values of these samples. Under steady-state shear flow, the reconstituted samples depicted a shear-thinning behavior (n
Journal Title: Industrial Crops and Products
Year Published: 2019
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