Immersion in Sodium Erythorbate Solution before Coating with Sodium Alginate Maintains Freshness of Snakehead (Channa argus) Muscle
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Abstract:
The freshness of snakehead (Channa argus) muscle was assessed to determine the effects of immersion in a solution containing sodium erythorbate before coating with sodium alginate solution. Solution A was formulated with nisin, citric acid, and acetic acid, while solution B was formed by supplementing sodium erythorbate in Solution A. Prior to coating with sodium alginate solution, snakehead muscle samples were immersed in solution A (coating A group) or solution B (coating B group). The juice leakage rate, pH value, thiobarbituric acid (TBA) value, total volatile base nitrogen (TVB-N), and total bacterial count of frozen snakehead muscle during storage at 2 ℃ were measured and compared to the respective values obtained for the control group, in which the snakehead muscle was not treated with any solution. The results showed that the juice leakage rates of groups A and B were significantly (p<0.05) lower than that of control group. During storage, the increase in pH, TBA, TVB-N, and total bacterial count of snakehead muscle were significantly (p<0.05) delayed by immersion in solutions A or B followed by coating with sodium alginate solution, compared with the control group. Additionally, the values obtained for coating B group were significantly (p<0.05) lower than those obtained for coating A group. In summary, the quality of snakehead (Channa Argus) muscle during storage can be maintained to a greater extent by immersion in a solution containing sodium erythorbate to maintain freshness and subsequent coating with sodium alginate solution.
