Inactivated vaccine of porcine epidemic diarrhea virus and preparation method of inactivated vaccine
A technology for porcine epidemic diarrhea and virus inactivation, which is used in vaccines, antiviral agents, veterinary vaccines, etc., to achieve the effects of improving the level, simple preparation method, and shortening the immune window period
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Embodiment 1
[0027] Embodiment 1, the preparation of fresh canna flower extract
[0028] Take canna flowers or flower buds, take their petals, grind them, add distilled water, put them in a triangular flask, seal them, take a constant temperature water bath at 95°C for 30 minutes, cool them down rapidly, centrifuge them at room temperature for 10 minutes, and take the supernatant to obtain the final product.
[0029] Embodiment 2-4 of the present invention formula and dosage of immunopotentiator
[0030]
Embodiment 5
[0031] Embodiment 5, the preparation of porcine epidemic diarrhea virus inactivated vaccine of the present invention
[0032] A) Expansion culture of ST cells: take ST cells and digest and disperse them with trypsin, add cell growth medium at 37°C, containing 5% CO 2 Cultured in an environment until the cells form a good monolayer, and then wash the cells with serum-free DMEM medium for inoculation of porcine epidemic diarrhea virus;
[0033] B) Virus inoculation: inoculate the porcine epidemic diarrhea virus seed into the cells prepared in the step according to the final volume of 50:500, absorb the virus solution at 37°C for 45min, and then use the cell growth medium at 37°C, containing 5%CO 2 Cultivate in an environment where the cytopathic rate reaches more than 75%, harvest the cell liquid;
[0034] C) Propagation of seedling venom: Take the cell line culture bottle that has formed a good monolayer in step A), discard the cell growth liquid, inoculate the cell liquid ...
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