Microencapsulation of Gac (Momordica cochinchinensis Spreng.) fruit oil in Ca-Alginate bead produced through Jetcutter
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Abstract
The Gac (Momordica cochinchinensisSpreng.) fruit oil was microencapsulated in Ca-Alginate bead by Jetcutter equipment. Experiments showed that the effects of emulsion preparation and equipment parameters were significant on particle size, microencap-sulation yield, loading capacity and solids recovery efficiency of the device. At alginate concentration of 2.5%, the bead had a spherical size of 1.07 - 1.18 mm when the fluid flow was 14 mL/min and the rotation of the cutting disc was 400 - 800 rpm. Samples stored for 2 h after homogenization showed better microencapsulation yield (83 - 84%) and bead size (1.07 mm) than those stored for 24 h after homogenization (79% and 1.18 mm). When the loading capacity increased from 20% to 40%, the mole ratio (CaCl2-alginate) in the bead was reduced from 1.55 to 0.86. This mole ratio data can be considered to control and adjust CaCl2 concentration during the continuous operation of the Jetcutter.
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References
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