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Impact of divalent salts and bovine gelatin on gel properties of phosphorylated gelatin from the skin of unicorn leatherjacket

  • Phanngam Kaewruang
  • , Soottawat Benjakul
  • , Thummanoon Prodpran
  • , Angel B. Encarnacion
  • , Sittipong Nalinanon
  • Prince of Songkla University
  • Department of Agriculture-Bureau of Fisheries and Aquatic Resources
  • King Mongkut's Institute of Technology Ladkrabang

Research output: Contribution to journalArticlepeer-review

58 Citations (Scopus)

Abstract

The impact of zinc chloride (ZnCl2) and calcium chloride (CaCl2) as well as bovine gelatin (BG) on the gel strength of phosphorylated fish gelatin (PFG) from the skin of unicorn leatherjacket was investigated. The gel strength of PFG increased with increasing concentrations of ZnCl2 and CaCl2 (2.5-40μmol L-1). A higher gel strength was observed with CaCl2, compared with ZnCl2. The gel strength of PFG with 20μmolL-1 CaCl2 increased by 15.7%, compared to the control gel. Nevertheless, at higher concentration (40μmolL-1) of both salts, gel strength of PFG decreased. Hardness of gels decreased with increasing PFG content (P<0.05). Nevertheless, no differences in hardness were found amongst gels with BG/PFG ratios of 4:0 and 3:1 (P≥0.05). Thus, PFG could be used in combination with CaCl2 to substitute for BG at a level of 25%.

Original languageEnglish
Pages (from-to)477-482
Number of pages6
JournalLWT
Volume55
Issue number2
DOIs
Publication statusPublished - Mar 2014
Externally publishedYes

Keywords

  • Bovine gelatin
  • Calcium chloride
  • Phosphorylated gelatin
  • Unicorn leatherjacket
  • Zinc chloride

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