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Properties and characteristics of salmon frame protein isolate films influenced by glycerol and squalene

  • K. Nilsuwan
  • , N. Widyanti
  • , T. Prodpran
  • , S. Benjakul
  • , K. de la Caba
  • Prince of Songkla University
  • Universitas Gadjah Mada
  • University of The Basque Country (UPV/EHU)

Research output: Contribution to journalArticlepeer-review

Abstract

Characteristics of edible/biodegradable film based on salmon frame protein isolate (SFPI), a processing by-product, containing glycerol at two different concentrations (50 and 65% by weight of protein) with and without 30% squalene (by weight of protein) were investigated. Without squalene, the SFPI film generally had higher hydrophilicity when higher concentration of glycerol was used as indicated by higher (p < 0.05) water-vapour permeability (WVP). The addition of squalene augmented yellowness and hydrophobicity of SFPI film as indicated by higher b* colour coordinate and lower WVP (p < 0.05), respectively, in comparison to those without squalene. The squalene also promoted the interactions in SFPI film matrix as revealed by Fourier-transform infrared spectra. These interactions were related to a superior mechanical properties, high barrier properties, and increased thermal resistance of the resulting SFPI film.

Original languageEnglish
Pages (from-to)676-685
Number of pages10
JournalInternational Food Research Journal
Volume29
Issue number3
DOIs
Publication statusPublished - 2022
Externally publishedYes

Keywords

  • Biodegradable film
  • Edible film
  • Protein isolate
  • Salmon frame
  • Squalene

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