Disinfection method and system for inactivating novel coronavirus in cold chain food by ionizing radiation
A technology of ionizing radiation and coronavirus, applied in food preservation, food science, application, etc., can solve the problems that cold chain food cannot be sterilized by ionizing radiation, and achieve the effect of ensuring people's health and safety, strong penetrating power, and no heat generation effect
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specific Embodiment approach
[0046] High-energy electron beam inactivation test for novel coronavirus, the specific implementation method is as follows:
[0047] In a biosafety level-three laboratory authorized by the national disease control department, the samples of the new coronavirus strain were loaded into frozen Ecuadorian white shrimp samples, and packaged in multiple layers in a biosafety transfer bag. Before transfer, the outer surface of the transfer bag and the Biosafety transport boxes for chemical disinfection.
[0048] Sterilization by ionizing radiation using a 10 MeV electron beam. The process parameters are: power 15 kw, repetition frequency 335 Hz, beam energy 10 MeV, beam transmission rate 8 m / min, absorbed dose with 10 gradients, and the dose range is 1-10 kGy.
[0049] The virus pre-loaded in the frozen Ecuadorian white shrimp sample after irradiation was taken out to infect Vero cells, and the cytopathic effect was observed after 72 hours of culture, and the one-step novel coronavi...
Embodiment 2
[0053] The gamma ray device inactivates the new coronavirus test, the specific implementation method is as follows:
[0054] In a biosafety level-three laboratory authorized by the national disease control department, the samples of the new coronavirus strain were loaded into frozen Ecuadorian white shrimp samples, and packaged in multiple layers in a biosafety transfer bag. Before transfer, the outer surface of the transfer bag and the Biosafety transport boxes for chemical disinfection.
[0055] A 1.2 million curie cobalt-60 irradiation source was used for ionizing radiation disinfection. The process parameters are: the distance between the cargo carrier and the nearest end of the plate source is 200 mm, and the absorbed dose is set in 3 gradients, and the dose range is 2-7 kGy.
[0056] The virus pre-loaded in the frozen Ecuadorian white shrimp sample after irradiation was taken out to infect Vero cells, and the cytopathic effect was observed after 72 hours of culture, and...
Embodiment 3
[0060] The X-ray device inactivates the new coronavirus test, the specific implementation method is as follows:
[0061] In a biosafety level-three laboratory authorized by the national disease control department, the samples of the new coronavirus strain were loaded into frozen Ecuadorian white shrimp samples, and packaged in multiple layers in a biosafety transfer bag. Before transfer, the outer surface of the transfer bag and the Biosafety transport boxes for chemical disinfection.
[0062] Electron accelerators are installed with conversion targets to generate X-rays for ionizing radiation disinfection. The process parameters are: power 100kw, beam energy 5 MeV, conversion target material is high-purity tungsten target, conversion target cooling system is water cooling cycle, transmission rate under the beam is 2 m / min, absorbed dose is set to 3 gradients, and the dose range is 2- 7 kGy.
[0063] The virus pre-loaded in the frozen Ecuadorian white shrimp sample after irr...
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