The performance of whey protein isolate (WPI) and pectin as wall materials in encapsulation of Ziziphoraclinopodiodes essential oil by ultrasonication method was compared. In this regard, using the responsesurface methodology, the influence of ultrasonication (US) power (50–150 W) and core-coating ratio(10–100%) on the properties of microcapsules was evaluated. Increasing US power and core-coatingratio, caused to increase and decrease the particle size, respectively. The polydispersity index (PDI) ofWPI coated microcapsules was increased by increasing of US power. The Zeta potential values wereincreased by increasing of core-coating ratio. Also, the effect of core-coating ratio on encapsulation effi-ciency was more than US power. Morphological studies by SEM on optimized microcapsules showedregular spherical shapes. X-ray diffraction analysis revealed that the type of the wall material had noeffect on the structural properties of the microparticles. FT-IR analysis confirmed the pronounced effectof electrostatic interactions in the formation of microcapsules.
کلید واژگان :MicrocapsulesResponse surface methodologyUltrasonicationCoating biopolymersParticle sizeMorphologya
ارزش ریالی : 600000 ریال
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