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不同包装方式下生干与熟干虾皮贮藏品质变化
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浙江海洋大学

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国家重点研发计划项目(2021YFD2100504);国家自然(32301972 U23A20263);浙江省自然(LRG25C200001)


Changes of Different Packaging Methods on the Storage Quality of Raw-Dried and Cooked-Dried Shrimp
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    摘要:

    生、熟干虾皮贮藏易氧化褐变、滋生微生物,目前缺少高低温多指标对比分析。为明确包装方式、贮藏温度等对虾皮品质的协调作用,将生、熟干虾皮分别采用常规封口袋(Conventional Packaging,CP)、锡箔袋(Aluminum Foil Packaging,AP)、真空包装(Vacuum Packaging,VP)于-18 ℃、25 ℃贮藏,冻藏组每20 d、室温组每4 d取样,测定色差(L*、b*)、褐变指数(Browning Index,BI)、过氧化值(Peroxide Value,PV)、硫代巴比妥酸反应物(Thiobarbituric Acid Reactive Substances,TBARS)、总挥发性盐基氮(Total Volatile Basic Nitrogen,TVB-N)、菌落总数(Total Viable Count,TVC)、荧光强度、多酚氧化酶(Polyphenol Oxidase,PPO)活性及感官评分。结果表明,贮藏过程中L*值、感官评分下降,b*值、BI、PV、TBARS、TVB-N、TVC及荧光强度上升,-18 ℃下PPO活性先降后升,25 ℃各组变化各异。25 ℃下各指标劣变速率高于-18 ℃;相同条件下熟干虾皮劣变更严重;包装方式劣变速率为CP > AP > VP。综上,生干虾皮贮藏稳定性更佳,-18 ℃结合真空或锡箔包装可有效抑制虾皮品质劣变,为虾皮保鲜包装筛选、工艺优化及产业化应用提供理论依据。

    Abstract:

    Raw-dried and cooked-dried shrimp are susceptible to oxidative browning and microbial proliferation during storage, and multi-index comparative researches under high and low temperatures are insufficient. To clarify the synergistic effects of packaging modes and storage temperatures on the quality of dried shrimp, raw-dried and cooked-dried shrimp were packaged in conventional packaging (CP), aluminum foil packaging (AP), and vacuum packaging (VP), and stored at -18 ℃ and 25 ℃, respectively. Samples were collected every 20 d for the frozen group and every 4 d for the room-temperature group. Color difference (L* and b*), browning index (BI), peroxide value (PV), thiobarbituric acid reactive substances (TBARS) content, total volatile basic nitrogen (TVB-N) content, total viable count (TVC), fluorescence intensity, polyphenol oxidase (PPO) activity, and sensory scores were determined. The results indicated that L* values and sensory scores were reduced with extended storage time, while b* values, BI, PV, TBARS, TVB-N, TVC, and fluorescence intensity were elevated. PPO activity was decreased first and then increased at -18 ℃, and distinct variation trends were found in all groups at 25 ℃. Significantly higher deterioration rates of all indicators were observed at 25 ℃ than at -18 ℃. More severe quality deterioration was detected in cooked-dried shrimp under identical conditions, and the deterioration rates of different packaging types followed the sequence of CP > AP > VP. In conclusion, superior storage stability was exhibited by raw-dried shrimp. The combined application of -18 ℃ low-temperature storage with vacuum or aluminum foil packaging could effectively restrain quality deterioration of dried shrimp, which offered theoretical support for packaging screening, process optimization and industrial preservation of dried shrimp.

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  • 收稿日期:2026-06-26
  • 最后修改日期:2026-08-05
  • 录用日期:2026-08-06
  • 在线发布日期: 2026-11-09
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