Interactions between carboxymethyl konjac glucomannan and soy protein isolate in blended films

Le Wang, Man Xiao, Shuhong Dai, Jia Song, Xuewen Ni, Yapeng Fang, Harold Corke, Fatang Jiang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

69 Scopus citations

Abstract

To elucidate biopolymer interactions between carboxymethyl konjac glucomannan (CMKGM) and soy protein isolate (SPI) in different ratios on physicochemical properties of the blended films, biodegradable CMKGM/SPI films were prepared and characterized. The results showed that CMKGM and SPI are highly compatible in blended film formation, and that Maillard reactions and hydrogen bonds interactions between CMKGM and SPI occurred. The water adsorption of the CMKGM/SPI films progressively decreased with increasing CMKGM level, the surface wettability of the blended films was improved with increasing CMKGM content; the CMKGM/SPI blend films had enhanced tensile strength (TS) and elongation at break (EAB) compared to pure CMKGM and SPI films; the oxygen permeability of blend films was decreased; the roughness was decreased with increasing CMKGM content. Moreover, the CMKGM/SPI film was biocompatible and biodegradable.

Original languageEnglish
Pages (from-to)136-145
Number of pages10
JournalCarbohydrate Polymers
Volume101
Issue number1
DOIs
StatePublished - 2014
Externally publishedYes

Keywords

  • Biopolymer interactions
  • Blending
  • Carboxymethyl konjac glucomannan
  • Soy protein isolate

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