Sonochemical synthesis of liquid-encapsulated lysozyme microspheres.
Liquid-encapsulated lysozyme microspheres were successfully synthesized using a sonochemical method. The encapsulation of four different liquids, namely, sunflower oil, tetradecane, dodecane and perfluorohexane on the formation, stability and morphology of the lysozyme microspheres was studied. Among the four different liquids used for encapsulation, perfluorohexane-filled microspheres were found to be most stable in the dried state with a narrow size distribution. In order to explore the possibility of encapsulating biofunctional molecules (e.g., drugs) within these microspheres, liquids containing a fluorescent dye (Nile red) were encapsulated and the ultrasound-induced release of these dye-loaded liquids was studied. The fluorescence data for the liquid-filled lysozyme microspheres demonstrated the potential use of the sonochemical technique for synthesizing these "vehicles" for the encapsulation and the controlled delivery of dyes, flavours, fragrances or drugs.
Particulate Fluids Processing Centre, School of Chemistry, The University of Melbourne, Victoria, Australia.
Meifang
M
Zhou
Thomas Seak Hou
TS
Leong
Sonia
S
Melino
Francesca
F
Cavalieri
Sandra
S
Kentish
Muthupandian
M
Ashokkumar
D000162:Acoustics; D000473:Alkanes / Q000737:chemistry; D000818:Animals; D002417:Cattle; D002621:Chemistry / Q000379:methods*; D002645:Chickens; D005456:Fluorescent Dyes / Q000494:pharmacology; D005466:Fluorocarbons / Q000737:chemistry; D018613:Microscopy, Confocal / Q000379:methods; D008856:Microscopy, Fluorescence / Q000379:methods; D008863:Microspheres; D009113:Muramidase / Q000737:chemistry*; D010078:Oxazines / Q000494:pharmacology; D010938:Plant Oils; D011506:Proteins / Q000737:chemistry; D000074242:Sunflower Oil; D014465:Ultrasonics
D000473:Alkanes; D005456:Fluorescent Dyes; D005466:Fluorocarbons; D010078:Oxazines; D010938:Plant Oils; D011506:Proteins; D000074242:Sunflower Oil; C024713:n-tetradecane; C007548:n-dodecane; D009113:Muramidase; C078626:perflexane; C044808:nile red