食品科学

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大菱鲆冷藏过程中新鲜度评价

李婷婷1,刘剑侠2,李学鹏2,胡文忠1,励建荣2,*   

  1. 1.大连民族学院生命科学学院,辽宁 大连 116600;
    2.渤海大学食品科学研究院,辽宁省食品安全重点实验室,辽宁 锦州 121013
  • 出版日期:2014-09-25 发布日期:2014-09-17
  • 通讯作者: 励建荣
  • 基金资助:

    国家自然科学基金青年科学基金项目(31301572);中国博士后科学基金项目(2014M552302);
    “十二五”国家科技支撑计划项目(2012BAD29B06);辽宁省自然科学基金博士启动项目(20131003)

Freshness Evaluation of Turbot (Scophthalmus maximus) during Refrigerated Storage

LI Ting-ting1, LIU Jian-xia2, LI Xue-peng2, HU Wen-zhong1, LI Jian-rong2,*   

  1. 1. College of Life Science, Dalian Nationality of University, Dalian 116600, China;
    2. Food Safety Key Laboratory of Liaoning Province, Institute of Food Science Research, Bohai University, Jinzhou 121013, China
  • Online:2014-09-25 Published:2014-09-17
  • Contact: LI Jian-rong

摘要:

为研究大菱鲆冷藏过程中的新鲜度变化规律,以菌落总数、挥发性盐基氮(total volatile basic nitrogen,TVB-N)含量、硫代巴比妥酸(thiobarbituric acid,TBA)值、腺苷三磷酸关联物和K相关值(K、Ki、H、Fr、G和P值,鱼肉新鲜度的参考指标)为指标,结合感官评定,探究大菱鲆在20 d贮藏期内的品质变化情况。结果表明:肌苷酸和Fr与贮藏时间呈显著负相关(r=-0.870,r=-0.887);K值随贮藏时间延长显著升高直至趋于稳定(r=0.895)。因此,菌落总数、TVB-N含量、K值、感官评定适宜作为冷藏大菱鲆的新鲜度评价指标,且K值的灵敏度要高于菌落总数和TVB-N含量;TBA值不适宜作为冷藏大菱鲆的新鲜度指标;4 ℃冷藏环境下的大菱鲆货架期为12 d。

关键词: 大菱鲆, 冷藏, 鲜度变化, ATP关联物

Abstract:

In order to evaluate the freshness of turbot (Scophthalmus maximus) during refrigerated storage, the changes in
total viable counts (TVC), total volatile basic nitrogen (TVB-N), thiobarbituric acid (TBA), ATP-related compounds and K
value were investigated by periodical determination. The results showed that IMP and Fr exhibited a significantly negative
correlation (r = -0.870, r = -0.887). K value increased significantly with the extension of storage time until reaching a stable
level (r = 0.895). TVC, TVB-N and K values and sensory evaluation could be applied as indexes for freshness evaluation.
Furthermore, the sensitivity of K value was higher when compared with the values of TVC and TVB-N; TBA value was not
appropriate for the freshness evaluation of refrigerated turbot. Based on the microbiological, physical and chemical changes
observed throughout the storage period 4 ℃, the shelf life of turbot was 12 days.

Key words: turbot, refrigerated storage, freshness change, ATP-related compounds

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