Protective agent of live bacillus subtilis preparation
A technology of Bacillus subtilis and live bacterial preparations, which is applied in the direction of bacterial medical raw materials, medical preparations with non-active ingredients, medical preparations containing active ingredients, etc., which can solve the problems of high freezing costs, inconvenient transportation, and frozen storage. Strong center dependence and other problems, to achieve high application value, solve the difficulty of storage at room temperature, and easy to operate
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Embodiment 1
[0011] Embodiment 1: the preparation of bacillus subtilis live bacteria preparation
[0012] Activation of Bacillus subtilis strains The strains were inoculated on beef extract peptone solid medium. Then put it into an incubator and cultivate it at 37°C for 16 hours;
[0013] Fermentation culture of Bacillus subtilis The above-mentioned activated cultured colonies were eluted, added to beef extract peptone liquid medium by aseptic method, and cultivated for 16 hours at 37°C and 200 rpm.
[0014] Preparation of live Bacillus subtilis preparations The above-mentioned fermented fermentation liquid was introduced into a centrifuge through a pipeline, and centrifuged with a large-capacity centrifuge at 6000 rpm for 15 minutes at low temperature (4° C.). Collect the sludge-like bacteria in the centrifuge tube, and dry under reduced pressure at 40°C to obtain 10 g of dry bacteria powder of Bacillus subtilis, and the number of viable bacteria was checked to be 2.2×10 16 cfu / g.
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Embodiment 2
[0017] Embodiment 2: Stability detection of Bacillus subtilis live bacteria preparation
[0018] Divide the live Bacillus subtilis preparation prepared according to the method of Example 1 into 2 parts, and place them in room temperature and 37°C sample storage box. The samples placed at room temperature are sampled every 3 months to detect the number of viable bacteria and the viable index. Placed samples are taken once a month to detect the number of live bacteria.
[0019] Viable bacteria count detection method:
[0020] 1. Fully shake the liquid sample, draw 0.5ml of the liquid sample into the test tube, add 4.5ml of diluent, and shake fully to form a 1:10 test solution;
[0021] 2. Dilution: draw 0.5ml of the test solution, add 4.5ml of the diluent to another test tube, mix well to make a 1:100 test solution, repeat the above operation, and perform 10-fold serial dilution until the required dilution;
[0022] 3. Dropping sample: Take 0.2ml of the bacterial solution of ...
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