The Effects of Rheological Properties of Wall Materials on Morphology and Particle Size Distribution of Microcapsule

XieY.,�WangA.,�LuQ.,�HuiM.�(2010):�The effects of rheological properties of wall materials on mor- phology and particle size distribution of microcapsule.�CzechJ.�FoodSci.,�28:�433-439. Theeffectsofrheologicalpropertiesofthewallmaterialsonthemorphologyandparticlesizedistributionofmicrocap - sulespreparedbyspray-dryingwereevaluated. �Gelatin-sucrose �(Gel-Suc), �gelatin-peach-gum-sucrose �(Gel-PG-Suc),� andHI-CAP�100�wereusedaswallmaterialswithvitaminAasamodelcorematerial. �Scanningelectronmicroscopy� (SEM)� showedthatmicrocapsulesproducedwithGel-SucexhibitedcrackswhileGel-PG-Sucproducedasmooth� surfacewithfewpores, �andHI-CAP100�aroundedsurfacecontainingcharacteristicconcavities. �Thevolumeaverage� diameter�(D 4,3 )�showedsignificantvariationsfrom �73.9�± �1.02�µmand�68.7�± �0.85�µmto �29.9�± �0.94�µm �(P� �Gel-PG-Suc �>�HI-CAP�100.�Gel-Sucshowedthehighestelasticmodulus �(G')�andviscousmodulus �(G''�values),� followedbyGel-PG-SucandHI-CAP�100.�Gel-Sucwasassociatedwithmoderatequantitiesofbrokenmicrocapsules� whileHI-CAP�100�generatednumerousmicrocapsuleswithcharacteristicdentsgeneratedduringspray-drying.