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Author: search.filters.author.Benjakul, SoottawatSubject: search.filters.subject.Calcium chloride

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    Impact of divalent salts and bovine gelatin on gel properties of phosphorylated gelatin from the skin of unicorn leatherjacket
    (2014-01-01)
    Kaewruang, Phanngam
    ;
    Benjakul, Soottawat
    ;
    Prodpran, Thummanoon
    ;
    Encarnacion, Angel B.
    ;
    Nalinanon, Sittipong
    The impact of zinc chloride (ZnCl<inf>2</inf>) and calcium chloride (CaCl<inf>2</inf>) 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 ZnCl<inf>2</inf> and CaCl<inf>2</inf> (2.5-40μmol L<sup>-1</sup>). A higher gel strength was observed with CaCl<inf>2</inf>, compared with ZnCl<inf>2</inf>. The gel strength of PFG with 20μmolL<sup>-1</sup> CaCl<inf>2</inf> increased by 15.7%, compared to the control gel. Nevertheless, at higher concentration (40μmolL<sup>-1</sup>) 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 CaCl<inf>2</inf> to substitute for BG at a level of 25%. © 2013 Elsevier Ltd.