本试验研究了高能电子束辐照技术应用于脆肉鲩鱼片的保鲜效果，采用不同剂量 (0、1、3、5、7 kGy) 的电子束辐照，结合真空包装于4℃冷藏条件下保鲜，测定菌落总数 (APC)、脂质氧化产物 (TBARs)、挥发性盐基氮 (TVB-N)、质构 (TPA)和色度，结合感官评价探究电子束辐照对鱼片冷藏期间贮藏品质的影响。结果表明，辐照能较大程度抑制鲩鱼片中微生物的增长，3~7 kGy的辐照剂量能使鲩鱼片在整个贮藏期间菌落总数保持在106 cfu·g-1以下，推断3 kGy是脆肉鲩鱼片最低有效剂量。虽然辐照处理后会导致鲩鱼片TBARs值增加，但在贮藏后期有延缓TBARs值上升的效果，5 kGy及更低剂量可维持鲩鱼片TBARs在较低水平。同样，辐照能延缓鱼片TVB-N含量的增加。辐照对鲩鱼片气味、质构和色值影响差异不显著。综合考量，在真空包装，4℃冷藏的条件下，3 kGy是脆肉鲩鱼片最低有效剂量，5 kGy是最高耐受剂量，使用3~5 kGy剂量电子束辐照处理，最适用于脆肉鲩生鱼片的贮藏保鲜。本研究结果为电子束辐照应用于脆肉鲩鱼片的保鲜提供参考依据。

To study the effect of high-energy electron beam irradiation technology on the quality in crisped grass carp fillets during storage. Crisped grass carp fillets was treated with different irradiation doses (0、1、3、5、7 kGy) combined with vacuum packaging. The samples were stored under 4℃ refrigeration, and the quality of aerobic plate count (APC), thiobarbituric acid (TBARs), volatile base nitrogen (TVB-N), texture properties (TPA), color value and changes of sensory evaluation were measured. The results showed that APC of fillets can be inhibited below 106 cfu·g-1 after the irradiation dose of 3~7 kGy, indicating that 3 kGy was the lowest effective dose. Although the TBARs value of grass carp fillets were increased after the irradiation, while it increased lower than control group in the late storage period. Similarly, irradiation decreased could the TVB-N content in grass carp fillets. Texture properties and color values of fillets were not significantly influence by high-energy electron beam irradiation. Based on the results above, the shelf life of crisped grass carp flakes was extended from 9 to 18 days by a dose of 3~7 kGy. In summary, 3 kGy is the lowest effective dose of fillets, and 5 kGy is the highest tolerated dose, the quality of grass carp fillets could be enhanced at an irradiation dose of 3~5 kGy treatment combined with vacuum packaging under temperature of 4℃ storage. The result provides a reference basis for electron beam irradiation to the preservation of crisped grass carp fillets.

2022年乡村振兴战略专项资金“营养健康型预制菜加工关键技术研究及产业化;2022年乡村振兴战略专项资金（第三批）；乡村振兴战略专项（农业科技能力提升）2022年地方分院和专家工作站项目（2023研究院06）