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当前位置: 首页 > 文章 > 温度波动及电子束辐照对冷冻大黄鱼品质与货架期的影响 核农学报 2017 (12) 2350-2357
Position: Home > Articles > Effect of Temperature Fluctuations and Electron Beam Irradiation on Quality and the Shelf Life of Frozen Large Yellow Croaker Journal of Nuclear Agricultural Sciences 2017 (12) 2350-2357

温度波动及电子束辐照对冷冻大黄鱼品质与货架期的影响

作  者：
傅丽丽;高原;林敏;李树磊;金俊;冯涛;潘家荣
关键词：
大黄鱼;温度波动;电子束;辐照剂量;品质
摘  要：
为研究冷链运输过程中温度波动和电子束辐照对冷冻大黄鱼品质及货架期的影响,本试验比较了温度稳定组-18℃、温度波动组(-18℃—0℃—-18℃—0℃)以及不同辐照剂量组(0、1、2、4 k Gy)的大黄鱼在贮藏过程中,氨基酸、菌落总数(APC)、挥发性盐基氮(TVB-N)、硫代巴比妥酸(TBARS)及挥发性气味等指标的变化情况。结果表明,温度稳定组大黄鱼的APC、TVB-N、TBARS等指标无明显波动,而温度波动组大黄鱼的各指标均与温度稳定组存在显著性差异(P<0.05),货架期减短至26 d左右;但温度波动组经1、2、4 k Gy不同剂量辐照后,APC、TVB-N等指标的增长速度均有所减缓,辐照剂量越大,效果越明显,且辐照处理对氨基酸及挥发性气味无显著影响;1、2 k Gy剂量辐照处理组除了TBARS值在初期较高外,贮藏期间与未辐照组无显著差异(P>0.05),而4 kGy剂量处理对TBARS值影响较大,从辐照处理开始一直处于较高水平,且在贮藏末期已达0.614 mg MDA·100-1·g-1。因此,在冷链运输过程中应尽量避免温度波动,同时配以2 kGy辐照剂量可使冷冻大黄鱼保持良好的品质。本研究结果为冷冻大黄鱼的储藏运输提供了理论参考。
译  名：
Effect of Temperature Fluctuations and Electron Beam Irradiation on Quality and the Shelf Life of Frozen Large Yellow Croaker
作  者：
FU Lili;GAO Yuan;LIN Min;LI Shulei;JIN Jun;FENG Tao;PAN Jiarong;National & Local United Engineering Lab of Quality Controlling Technology and Instrumentation for Marine Food/Key Laboratory of Marine Food Quality and Hazard Controlling Technology of Zhejiang Province/College of Life Sciences,China Jiliang University;
单  位：
National & Local United Engineering Lab of Quality Controlling Technology and Instrumentation for Marine Food/Key Laboratory of Marine Food Quality and Hazard Controlling Technology of Zhejiang Province/College of Life Sciences,China Jiliang University
关键词：
large yellow croaker;;temperature fluctuation;;electron beam;;radiation dose;;quality
摘  要：
In order to evaluate the effect of temperature fluctuations during the cold chain transportation and the effect of electron beam irradiation on quality and the shelf life of large yellow croaker,Fish samples were investigated through three treatments: stored at-18℃,with temperature fluctuations of(-18℃ —0℃ —18℃ —0℃),and group treated with irradiation( 0,1,2 and 4 k Gy). Changes in aerobic plate count( APC),total volatile basic nitrogen( TVB-N),2-thiobarbituric acid reactive substance( TBARS),amino acids and volatile gas were measured. The results showed that indicators for large yellow croakers which were stored at-18℃ were stable,but the indexes of large yellow croakers experienced temperature fluctuations were much more different( P < 0. 05) and the shelf life were decreased to 26 d.However,once the large yellow croaker were irradiated by 1 k Gy,2 k Gy and 4k Gy,the increase of APC and TVB-N were slowed down,and better effect can be obtained when the dose was increased; at the same time,irradiation treatment has no significant influence on amino acids and volatile gas. An exception can be found for the TBARS which value was higher than the control group at the beginning of storage when the fish was irradiated by 1 k Gy and 2 k Gy dose,during the storage there was no significant difference( P > 0. 05),4 k Gy dose had a negative effect on the fat oxidation of large yellow croakers,and the TBARS value was at a high level after irradiation. At the end of storage,it was increased to 0. 614 mg MDA·100~(-1)·g~(-1). In conclusion,during the cold chain transportation,irradiation with dosage of 2 k Gy can maintain the quality of large yellow croakers and avoiding the temperature fluctuations. The results of this research provides references for storage and transportation of frozen large yellow croaker.

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