Immunoglobulin (IgY) antibody oral spray for preventing decayed teeth
An oral spray, antibody technology, applied in the direction of antibody, aerosol delivery, digestive system, etc., can solve the problems of reduced antibacterial activity, reduced titer, disappearance, etc., to prevent dental caries, eliminate dental plaque, and prevent dental caries. Effect
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Embodiment 1
[0043] Example 1 Preparation and Extraction of IgY Antibody
[0044] Using BHI or TTY medium, culture c-type and d-type Streptococcus mutans (Shanghai Jiaotong University Institute of Stomatology) for 48 hours under the temperature condition of 37 ℃, respectively, the cultured c-type and d-type streptococcus mutans were respectively used at 5000rpm Centrifuge for 5 minutes, collect the bacteria, and wash the bacteria three times with a phosphate buffer solution with a pH value of 6.0 and a concentration of 0.2M. Heat treatment at 50°C for 25 minutes to prepare c-type Streptococcus mutans (2 billion / ml) and d-type Streptococcus mutans (2 billion / ml) liquids, mix them in a volume ratio of 5:1, and prepare immunogens.
[0045] Take 1.0ml of the antigen each time, inject it subcutaneously to laying hens (Leghorn chickens), and immunize three times with an interval of two weeks.
[0046] Collect the eggs 20 days after the first immunized hen, separate the egg yolk with an egg yolk...
Embodiment 2
[0048] 1) Formulation:
[0049]
[0050] 2) Preparation: add the above components into the container respectively, inactivate the virus by Pasteur sterilization, filter and sterilize with a 0.22 μm membrane, and obtain the anti-caries IgY antibody oral spray of the present invention. Then, pack it into a small carry-on spray can and spray it.
[0051] 3) In vitro antibacterial test: Take 200 μl of the anti-caries IgY antibody oral spray prepared in 2), and test it according to the above in vitro antibacterial test. After testing: the bacteriostatic rate to Streptococcus mutans type C is 80%, and the bacteriostatic rate to Streptococcus mutans Type D is 85%.
example 3
[0053] 1) Formulation:
[0054]
[0055]
[0056] 2) preparation: with embodiment 2.
[0057] 3) In vitro antibacterial test: Take 200 μl of the anti-caries IgY antibody oral spray prepared in 2), and test it according to the above in vitro antibacterial test. After testing: the bacteriostatic rate to Streptococcus mutans type C is 80%, and the bacteriostatic rate to Streptococcus mutans Type D is 85%.
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