Effects of Electron Beam and 60Co γ-ray Irradiations on the Fresh-keeping of Winter Jujube
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摘要: 为延长采后冬枣果实的货架期，采用不同剂量（500、800 Gy）的电子束和60Co γ-射线对冬枣进行辐照处理，辐照后置于冷库（温度0±1℃，相对湿度80%~85%）中贮藏54 d，研究了不同辐照处理对贮藏期间冬枣的微生物数量与品质变化的影响。结果表明：两种辐照处理均能有效抑制冬枣腐烂率的增加和微生物的生长，贮藏结束时，对照组冬枣果实的腐烂率已达47.87%，而辐照组冬枣果实的腐烂率在20.97%~25.95%之间，显著低于未辐照组。贮藏前24 d，辐照处理对冬枣的可溶性固形物含量和可滴定酸含量无显著影响，但辐照处理使冬枣的硬度降低，促进了冬枣果皮的转红。贮藏44 d后，辐照处理可以降低果实的呼吸强度。在以上处理中，低剂量500 Gy的两种处理能够维持冬枣较好的贮藏品质。Abstract: In order to prolong the shelf life of post-harvest winter jujube, the fruits were treated with different doses(500, 800 Gy) of electron beams and 60Co γ-rays and then stored at 0±1℃ and 80%~85% relative humidity for 54 d. The effects of different irradiation treatments on the microbial quantity and the quality of winter jujube were investigated during cold storage. The results indicated that both irradiation treatments could effectively inhibit the increase of decay rate of winter jujube and the growth of microorganism. At the end of storage, the decay rate of the winter jujube in the control group had reached 47.87%, while that of the irradiated groups was between 20.97% and 25.95%, significantly lower than that of the control group. In the early 24 days of storage, irradiation treatment had no significant effect on the total soluble solid and titratable acid content of winter jujube, however irradiation treatment reduced the firmness of winter jujube and promoted the redness of pericarp. In the later 44 days of storage, irradiation treatment could restrain the respiration intensity of the fruits. In the above processing, two treatments of low dose 500 Gy could maintain good storage qualities of winter jujube.
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Keywords:
- winter jujube /
- 60Co γ-ray /
- electron beam /
- irradiation /
- fresh-keeping
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[1] 唐艳. 采后处理对枣贮藏品质的影响研究[D]. 长沙:中南林业科技大学,2019. [2] 庄青. 冬枣采后生理及保鲜技术研究[D]. 青岛:山东农业大学,2007. [3] 张惠然,张军. 冬枣采后生理及保鲜技术研究进展[J]. 保鲜与加工,2017,17(1):134-138. [4] Fernandes A,Antonio A L,Oliveira M B P,et al. Effect of gamma and electron beam irradiation on the physicochemical and nutritional properties of mushrooms:A review[J]. Food Chemistry,2012,135(2):641-650.
[5] Cardoso R V C,Fernandes Â,Barreira J C M,et al. Effectiveness of gamma and electron beam irradiation as preserving technologies of fresh Agaricus bisporus Portobello:A comparative study. Food Chemistry. 2019,278(11):760-766.
[6] 杨伟,徐莹,樊燕,等. 海藻酸钠涂膜及60Co-γ辐照处理对小枣的保鲜作用[J]. 食品工业科技,2012,33(3):343-347. [7] 杨俊丽,乔勇进,王海宏,等. 高能电子束与60Co-γ射线对大蒜辐照保鲜效果的比较研究[J]. 食品科学,2010,31(12):260-265. [8] 周任佳,乔勇进,王海宏,等. 高能电子束辐照对鲜切哈密瓜生理生化品质的影响[J]. 核农学报,2012,26(2):300-305 ,323.
[9] 龙明秀,吴凤玉,田竹希,等.60Co-γ辐照处理对蓝莓保鲜效果的影响[J]. 核农学报,2019,33(11):2165-2176. [10] 周冉冉,高虹,范秀芝,等.60Co-γ射线和电子束辐照对鲜香菇保鲜效果的初步研究[J]. 核农学报,2019,33(3):490-497. [11] 于广伟. 氧化淀粉涂膜对草莓、甜樱桃和巴梨的保鲜效果影响[D]. 兰州:甘肃农业大学,2016. [12] 雷庆,黄敏,康菊,等. 电子束辐照草莓保鲜效果研究[J].核农学报,2011,25(3):510-513. [13] 陈召亮,方强,王海宏,等. 电子束辐照对鲜切西洋芹的保鲜效应[J]. 上海农业学报,2010,26(2):9-13. [14] 张小康. 早中熟鲜食红枣保鲜措施及其生理机制研究[D]. 咸阳:西北农林科技大学,2017. [15] Li H,Xiong Z,Gui D,et al. Effect of aqueous ozone on quality and shelf life of Chinese winter jujube[J]. Journal of Food Processing & Preservation. 2019,43(9):142-145.
[16] 康晨煊. 设施条件下冬枣品质特性研究[D]. 咸阳:西北农林科技大学,2019. [17] 陈召亮,王海宏,乔勇进. 电子束辐照对草莓灰霉病菌致病力及致病相关酶活性的影响[J]. 核农学报,2013,27(8):1156-1161. [18] Zhao Y,Zhu X,Hou Y,et al. Effects of nitric oxide fumigation treatment on retarding cell wall degradation and delaying softening of winter jujube(Ziziphus jujuba Mill. cv. Dongzao)fruit during storage[J]. Postharvest Biology and Technology,2019,156(7):987-993.
[19] 戚蓉迪,颜伟强,岳玲,等. 电子束辐照对进口甜樱桃保鲜效果的影响[J]. 核农学报,2014,28(5):839-844. [20] 杨俊丽,陈召亮,王海宏,等.高能电子束辐照对草莓保鲜效果的影响[J]. 上海农业学报,2010,26(3):8-12. [21] 周慧娟,叶正文,张学英,等. 电子束辐照对蓝莓品质及生理代谢的影响[J]. 核农学报,2013,27(9):1308-1316. [22] Kou X,He Y,Li Y,et al. Effect of abscisic acid(ABA)and chitosan/nano-silica/sodium alginate composite film on the color development and quality of postharvest Chinese winter jujube(Zizyphus jujuba Mill. cv. Dongzao)[J]. Food Chemistry,2019,270(7):385-394.
[23] 武继芸. 不同涂膜处理对冬枣贮藏品质和抗氧化活性的影响[D]. 天津:天津大学,2016. [24] 王秋芳,乔勇进,乔旭光. 高能电子束辐照对巨峰葡萄生理品质的影响[J]. 中国农业科学,2010,43(3):571-577. [25] Deng W,Zhao X H. Calcium maintained higher quality and enhanced resistance against chilling stress by regulating enzymes in reactive oxygen and biofilm metabolism of Chinese winter jujube fruit[J]. Journal of Food Biochemistry,2020,44(4):1-8.
[26] Zhao Y T,Zhu X,Hou Y Y,et al. Postharvest nitric oxide treatment delays the senescence of winter jujube(Zizyphus jujuba Mill. cv. Dongzao)fruit during cold storage by regulating reactive oxygen species metabolism[J]. Scientia Horticulturae,2020,261(2):1-9..
[27] Nam H A,Ramakrishnan S R,Kwon J H. Effects of electron-beam irradiation on the quality characteristics of mandarin oranges(Citrus unshiu(Swingle)Marcov)during storage[J]. Food Chemistry,2019,286(4):338-345.
[28] 魏征,张政,魏佳,等. 茉莉酸甲酯雾化熏蒸对冬枣采后贮藏品质的影响[J]. 食品科技,2020,45(1):43-48.
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