首页|Effect of Sodium Alginate and Calcium Chloride on the Physicochemical Characteristics of Shrimp(Penaeus Vannamei)Surimi Gels
Effect of Sodium Alginate and Calcium Chloride on the Physicochemical Characteristics of Shrimp(Penaeus Vannamei)Surimi Gels
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The object of this study is to investigate the effects of sodium alginate(SA)and CaCl2 on the physicochemical characte-ristics of shrimp surimi by studying gel strength,water holding capacity(WHC),as well as by texture profile analysis(TPA).In addi-tion,the mechanism was analyzed through chemical interactions,protein secondary structure,and microstructure.The results showed that with the addition of different concentrations of SA and CaCl2 to the shrimp surimi,the gel quality firstly increased and then de-creased with the increase of SA and CaCl2 concentrations.The highest values of WHC,breaking force and gel strength were obtained with the addition of 1.2%SA or 0.1%CaCl2.When SA and CaCl2 were used in concert,the group containing 1.2%SA and 0.15%CaCl2 had the highest gel strength with the densest three-dimensional network structure of the gel.In addition,the results of chemical interaction analyses showed that hydrogen and ionic bonds were the main chemical bonds of shrimp surimi sol,while shrimp surimi gel mainly consisted of hydrophobic and disulfide bonds.The incorporation of SA and CaCl2 resulted in a significant increase in hydrophobic interactions and disulfide bonding,which could effectively improve the gel properties of shrimp surimi.
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NSTL
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