异抗坏血酸钠对乌鳢肌肉海藻酸钠涂膜保鲜效果的影响  

Immersion in Sodium Erythorbate Solution before Coating with Sodium Alginate Maintains Freshness of Snakehead(Channa argus) Muscle

作　　者：王文娟[1,2] 朱成科[1,2] 王慧洪[1] 舒璐[1] 蒋凡[1] 

机构地区：[1]西南大学荣昌校区,重庆402460 [2]水产科学重庆市市级重点实验室,重庆400715

出　　处：《现代食品科技》2016年第4期87-93,共7页Modern Food Science and Technology

基　　金：中央高校基本科研业务费专项资金项目(XDJK2014C057)

摘　　要：研究异Vc钠保鲜液浸泡、海藻酸钠涂膜处理对冷藏期间乌鳢肌肉新鲜度的影响。用乳酸链球菌素、柠檬酸和醋酸配制成保鲜液A。在A保鲜液的基础上,添加异Vc钠,配成保鲜液B。用A、B保鲜液浸泡乌鳢肌肉块,再用海藻酸钠溶液进行涂膜,分别为A涂膜组和B涂膜组。测定该两组冷冻肉汁液流失率及2℃冷藏期间肌肉p H值、TBA值、TVB-N及细菌总数的变化,并与不经浸泡和涂膜的对照组相比较。结果表明,乌鳢肌肉经两种保鲜液浸泡、海藻酸钠涂膜处理,其冷冻汁液流失率均显著(p<0.05)低于未处理的对照组。在贮藏期间,乌鳢肌肉经保鲜液浸泡、海藻酸涂膜处理能显著延缓肌肉p H值、TBA值、TVB-N及细菌总数的上升;并且B涂膜组的延缓效果显著(p<0.05)大于A涂膜组。综合考虑,用含异Vc钠的保鲜液浸泡后,再经海藻酸钠涂膜处理能改善乌鳢肌肉的贮藏品质。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,p H 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 p H,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.

关 键 词：乌鳢 鲜度 异VC钠 海藻酸钠 

分 类 号：TS254.4[轻工技术与工程—水产品加工及贮藏工程]