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| - Effect of Partial Replacement of Gum Arabic with Carbohydrates onIts Microencapsulation Properties
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| - Gum arabic solutions (10% w/v) were emulsified with soy oil at oil/gum ratios of 0.25−5.0. At oil/gum ratios <1.0, it was established that gum arabic could be partially replaced with a nonsurfactantcarbohydrate. To assess different carbohydrates as replacers for gum arabic, emulsions and spray-dried emulsions of soy oil and mixed solutions (10% w/v) of gum arabic and a range of carbohydratewall materials (oil/gum = 0.5) were prepared and analyzed. Maize starch and glucose were ineffectiveas partial replacers of gum arabic, but maltodextrins of various dextrose equivalence values (5.5−38) successfully replaced 50% of the gum arabic. The microencapsulation efficiency of the gum arabic/maltodextrin stabilized powders was further increased by increasing total solids of the feed to thedryer and by increasing the atomizer nozzle diameter. Keywords: Gum arabic; maltodextrin; emulsion; microencapsulation; wall material
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