Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/31741
Title: Formation of zein spheres by evaporation-induced self-assembly
Authors: Wang, Y 
Padua, GW
Keywords: Amphiphile
Microsphere
Self-assembly
SEM
Zein
Issue Date: 2012
Publisher: Springer
Source: Colloid and polymer science, 2012, v. 290, no. 15, p. 1593-1598 How to cite?
Journal: Colloid and Polymer Science 
Abstract: Zein is an amphiphilic protein capable of selfassembly into microspheres. Zein microspheres may form by evaporation-induced self-assembly (EISA) of zein solutions in ethanol/water. The formation of microspheres is of particular interest for the development of delivery systems. Zein solutions in ethanol/water 75 % (v/v) were slowly evaporated to promote self-assembly of microspheres. The ethanol content of the solvent decreased during EISA changing solvent polarity which induced self-assembly of zein particles. The growth of zein spheres was modeled from the hydrophobic and hydrophilic contributions to the interfacial free energy (R200.92). The good fit indicated that during EISA zein microspheres increased in size due to hydrophobic interactions between zein molecules. The model may allow the prediction of evaporation time and thus control over microsphere size.
URI: http://hdl.handle.net/10397/31741
DOI: 10.1007/s00396-012-2749-0
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