Zein dynamic adsorption to carboxylic and alkyl coated surfaces

Qin Wang; Qian Wang; Xuejun Wang; Graciela W. Padua

doi:10.1021/jf051545l

Zein dynamic adsorption to carboxylic and alkyl coated surfaces

Qin Wang, Qian Wang, Xuejun Wang, Graciela W. Padua

Food Science and Human Nutrition

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

Abstract

The adsorption of a commercial zein sample on carboxylic (COOH) and alkyl (CH₃) surfaces was monitored by high time resolution surface plasmon resonance. Zein showed higher affinity and higher mass adsorption on carboxylic than alkyl surfaces. A zein layer specific for each surface was obtained after flushing off loosely bound zein with 75% 2-propanol solutions. Zein deposits were examined under atomic force microscopy. Differences in layer thickness between carboxylic and alkyl surfaces were explained in terms of zein adsorption footprint.

Original language	English (US)
Pages (from-to)	517-522
Number of pages	6
Journal	Journal of Agricultural and Food Chemistry
Volume	54
Issue number	2
DOIs	https://doi.org/10.1021/jf051545l
State	Published - Jan 25 2006

Keywords

Atomic force microscopy
Surface plasmon resonance
Surface polarity
Zein

ASJC Scopus subject areas

General Chemistry
General Agricultural and Biological Sciences

Online availability

10.1021/jf051545l

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AU - Wang, Qin

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AU - Wang, Xuejun

AU - Padua, Graciela W.

PY - 2006/1/25

Y1 - 2006/1/25

N2 - The adsorption of a commercial zein sample on carboxylic (COOH) and alkyl (CH3) surfaces was monitored by high time resolution surface plasmon resonance. Zein showed higher affinity and higher mass adsorption on carboxylic than alkyl surfaces. A zein layer specific for each surface was obtained after flushing off loosely bound zein with 75% 2-propanol solutions. Zein deposits were examined under atomic force microscopy. Differences in layer thickness between carboxylic and alkyl surfaces were explained in terms of zein adsorption footprint.

AB - The adsorption of a commercial zein sample on carboxylic (COOH) and alkyl (CH3) surfaces was monitored by high time resolution surface plasmon resonance. Zein showed higher affinity and higher mass adsorption on carboxylic than alkyl surfaces. A zein layer specific for each surface was obtained after flushing off loosely bound zein with 75% 2-propanol solutions. Zein deposits were examined under atomic force microscopy. Differences in layer thickness between carboxylic and alkyl surfaces were explained in terms of zein adsorption footprint.

KW - Atomic force microscopy

KW - Surface plasmon resonance

KW - Surface polarity

KW - Zein

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JF - Journal of Agricultural and Food Chemistry

IS - 2

ER -

Zein dynamic adsorption to carboxylic and alkyl coated surfaces

Abstract

Keywords

ASJC Scopus subject areas

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