Formation of zein spheres by evaporation-induced self-assembly

Yi Wang; Graciela W. Padua

doi:10.1007/s00396-012-2749-0

Formation of zein spheres by evaporation-induced self-assembly

Yi Wang, Graciela W. Padua

Food Science and Human Nutrition

Research output: Contribution to journal › Article › peer-review

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.

Original language	English (US)
Pages (from-to)	1593-1598
Number of pages	6
Journal	Colloid and Polymer Science
Volume	290
Issue number	15
DOIs	https://doi.org/10.1007/s00396-012-2749-0
State	Published - Oct 2012

Keywords

Amphiphile
Microsphere
SEM
Self-assembly
Zein

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Polymers and Plastics
Colloid and Surface Chemistry
Materials Chemistry

Online availability

10.1007/s00396-012-2749-0

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title = "Formation of zein spheres by evaporation-induced self-assembly",

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.",

keywords = "Amphiphile, Microsphere, SEM, Self-assembly, Zein",

author = "Yi Wang and Padua, {Graciela W.}",

note = "Funding Information: The authors wish to thank PepsiCo Long Term Research for its support with this publication. However, the views expressed herein are solely those of the authors and should not be construed as PepsiCo{\textquoteright}s statements of position, intention, or strategy. We appreciate the help from the Center for Microanalysis of Materials, University of Illinois, which is partially supported by the U.S. Department of Energy under grant DEFG02-91-ER45439.",

year = "2012",

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doi = "10.1007/s00396-012-2749-0",

language = "English (US)",

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T1 - Formation of zein spheres by evaporation-induced self-assembly

AU - Wang, Yi

AU - Padua, Graciela W.

N1 - Funding Information: The authors wish to thank PepsiCo Long Term Research for its support with this publication. However, the views expressed herein are solely those of the authors and should not be construed as PepsiCo’s statements of position, intention, or strategy. We appreciate the help from the Center for Microanalysis of Materials, University of Illinois, which is partially supported by the U.S. Department of Energy under grant DEFG02-91-ER45439.

PY - 2012/10

Y1 - 2012/10

N2 - 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.

AB - 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.

KW - Amphiphile

KW - Microsphere

KW - SEM

KW - Self-assembly

KW - Zein

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VL - 290

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EP - 1598

JO - Colloid and Polymer Science

JF - Colloid and Polymer Science

IS - 15

ER -

Formation of zein spheres by evaporation-induced self-assembly

Abstract

Keywords

ASJC Scopus subject areas

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