Journal of Nuclear Agricultural Sciences ›› 2019, Vol. 33 ›› Issue (3): 490-497.DOI: 10.11869/j.issn.100-8551.2019.03.0490

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Preliminary Comparison of Preservation Effect of Fresh Lentinus Edodes by 60Co-γ Ray and Electron Beam Irradiation

ZHOU Ranran1, 3, GAO Hong1, FAN Xiuzhi1, YIN Chaomin1, CHEN Zheya1, YAO Fen1, CHENG Wei4, SHI Defang1, 2, *   

  1. 1 Agricultural Products Processing Subcenter of Hubei Agricultural Science & Technology Innovation Center/ National R&D Center For Edible Fungi Processing/Research Institute of Agricultural Products Processing and Nuclear-Agricultural Technology Academy of Agricultural Sciences, Hubei, Wuhan 430064;
    2 College of Food Science and Technology, Huazhong Agricultural University,Hubei, Wuhan 430070;
    3 College of Bioengineering and Food Science, Hubei University of Technology, Hubei,Wuhan 430064;
    4 Institue of Economic Crops, Hubei Academy of Agricultural Science, Hubei, Wuhan 430064
  • Received:2017-10-27 Revised:2018-03-06 Online:2019-03-10 Published:2019-01-23

60Co-γ射线和电子束辐照对鲜香菇保鲜效果的初步研究

周冉冉1, 3, 高虹1, 范秀芝1, 殷朝敏1, 陈浙娅1, 姚芬1, 程薇4, 史德芳1, 2, *   

  1. 1 湖北省农业科学院农产品加工与核农技术研究所/国家食用菌加工技术研发分中心/湖北省农业科技创新中心农产品加工分中心,湖北 武汉 430064;
    2 华中农业大学食品科学技术学院,湖北 武汉 430070;
    3 湖北工业大学生物工程与食品学院,湖北 武汉 430064;
    4 湖北省农业科学院经济作物研究所,湖北 武汉 430064
  • 通讯作者: 史德芳,男,副研究员,主要从事(药)食用菌功能食品开发研究。E-mail:2392013889@qq.com
  • 作者简介:周冉冉,女,主要从事(药)食用菌功能食品开发研究。E-mail:129843749@qq.com
  • 基金资助:

    湖北省技术创新专项(重大项目)(2017ABA148),山西省重点研发计划重点项目(201603D21106)

Abstract:

In order to investigate the effects of different doses of gamma ray and electron beam irradiation technique on the postharvest quality of fresh Lentinus edodes, changes in firmness, respiration, conductivity, sensory characteristics and cell structure and morphology of fresh Lentinus edodes after irradiation were measured. The results showed that with a 2 kGy60Co gamma ray irradiation treatment, a high level of firmness(37% reduction) was maintained, lower respiration(10.81 mg·kg-1·h-1) and relative conductivity(0.268%), compared to the other groups by 60Co gamma ray irradiation after storage for 16 d; while 38% reduction in firmness, 10.39 mg·kg-1·h-1 respiration and relative conductivity with a value of 0.241% than other electron bean groups were observed with 3 kGy electron bean irradiation treatment. Sensory analysis showed that the electron beam using 3 kGy, 60Co gamma ray with 2 kGy retards mushroom sensory deterioration and therefore has better preservation effect on fresh Lentinus edodes. Microscopic analysis showed that compared with 2 kGy60Co gamma ray, 3 kGy electron beam irradiation could keep the morphology of fresh Lentinus edodes well, delay its further degradation and prolong its storage period effectively. This paper explored the feasibility of irradiation in the preservation of fresh mushrooms, indicating that gamma-irradiation and electron-beam, might be a useful mushroom conservation technology.

Key words: fresh Lentinus edodes, 60Co-&#x003b3, ray, electron beam, irradiation, storage quality

摘要:

为研究60Co-γ和电子束2种射线的不同剂量对新鲜香菇采后保鲜效果的影响,本试验通过测定鲜香菇的硬度、呼吸强度、电导率、感官品质等指标,筛选2种辐照射线的最优剂量,并对比分析最优辐照处理下香菇细胞的微观结构。结果表明,60Co-γ射线中,2 kGy剂量组香菇硬度降幅为37%,呼吸强度为10.81 mg·kg-1·h-1,相对电导率为0.268%,均小于其他剂量组;电子束射线中,3 kGy剂量组香菇硬度降幅为38%,呼吸强度为10.39 mg·kg-1·h-1,相对电导率为0.241%,均小于其他剂量组。综合感官分析可知, 3 kGy电子束组和2 kGy 60Co-γ射线组香菇的保鲜效果分别优于同类射线其他剂量组。显微分析可知,与2 kGy 60Co-γ射线相比,3 kGy电子束辐照能够较好地保持新鲜香菇的菌丝形态,延缓其进一步降解,从而延长其贮藏期。本研究探索了辐照在香菇保鲜过程中的可行性,为推动电子束辐照技术和60Co-γ辐照技术在香菇保鲜领域的应用提供了可靠的理论依据与技术支持。

关键词: 鲜香菇, 60Co-&#x003b3, 射线, 电子束, 辐照, 贮藏品质