Zein dynamic adsorption to carboxylic and alkyl coated surfaces

Qin Wang, Qian Wang, Xuejun Wang, Graciela Wild Padua

Research output: Contribution to journalArticle

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 languageEnglish (US)
Pages (from-to)517-522
Number of pages6
JournalJournal of Agricultural and Food Chemistry
Volume54
Issue number2
DOIs
StatePublished - Jan 25 2006

Keywords

  • Atomic force microscopy
  • Surface plasmon resonance
  • Surface polarity
  • Zein

ASJC Scopus subject areas

  • Chemistry(all)
  • Agricultural and Biological Sciences(all)

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