Production of Turmeric Oleoresin Microcapsules by Complex Coacervation with Gelatin–Gum <scp>A</scp>rabic
Larissa Angélica Cirelli Zuanon, Cássia Roberta Malacrida, Vânia Regina Nicoletti
Journal of Food Process Engineering
Abstract
Abstract Turmeric oleoresin is a colorant prepared by solvent extraction of turmeric ( C urcuma longa L .). Curcumin, the major pigment present in turmeric, has been described as a potent antioxidant, anti‐inflammatory and anticarcinogenic agent. Turmeric pigments are lipid soluble and water insoluble and are sensitive to light, heat, oxygen and pH , which can be overcome by microencapsulation of turmeric oleoresin. The aim of this work was to investigate microencapsulation of turmeric oleoresin by complex coacervation using gelatin and gum A rabic as encapsulants and freeze‐drying as the drying method. The coacervation process was studied by varying the concentration of biopolymer solution (2.5, 5.0 and 7.5%) and the core material : total encapsulant ratio (25, 50, 75 and 100%). Microcapsules were evaluated for encapsulation efficiency, morphology, solubility and stability to light. Encapsulation efficiency ranged from 49 to 73% and samples produced with 2.5% of wall material and 100% core : encapsulant ratio showed better stability to light. Practical Applications This paper presents an optimized method to encapsulate turmeric oleoresin by complex coacervation using gelatin and gum Arabic as wall materials, producing dry colorant microcapsules with improved solubility in aqueous formulations.
Extracted Claims
6 claims extracted from this paper into the knowledge graph
microcapsules have an encapsulation efficiency of 49 to 73%
“Encapsulation efficiency ranged from 49 to 73% and samples produced with 2.5% of wall material and 100% core : encapsulant ratio showed better stability to light.”
turmeric pigments are lipid soluble and water insoluble
“Turmeric pigments are lipid soluble and water insoluble and are sensitive to light, heat, oxygen and pH , which can be overcome by microencapsulation of turmeric oleoresin.”
microencapsulation of turmeric oleoresin is optimized using gelatin and gum Arabic as encapsulants and freeze-drying as the drying method
“The aim of this work was to investigate microencapsulation of turmeric oleoresin by complex coacervation using gelatin and gum A rabic as encapsulants and freeze‐drying as the drying method.”