Lactobacillus salivarius JYLS-372 for improving oral health, product and preparation method thereof
A technology of JYLS-372 and Lactobacillus salivarius, applied in the field of oral care, can solve problems such as endangering the health of the whole body, affecting chewing, speech, aggravating systemic diseases, etc., and achieve the effect of improving oral health, preventing dental caries, and reducing aphthous ulcers
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Embodiment 1
[0022] Example 1 Isolation and Identification of Lactobacillus salivarius JYLS-372
[0023] 1. Bacterial source
[0024] Qingzhou Xigu breast milk.
[0025] 2. Medium and culture conditions
[0026] (1) Weigh 1 g of the collected sample, place it in a Erlenmeyer flask containing 99 mL of 0.85% sterile saline, shake it for 15 minutes to fully mix the sample, and serially dilute it 10 times to 10 -7 , prepared into bacterial suspension;
[0027] (2) Spread the bacterial suspension on the MRS plate medium, culture at 37°C for 48 hours;
[0028] (3) Pick a single colony of suspected lactic acid bacteria on the MRS plate medium, Gram staining, and microscopic examination;
[0029] (4) Select Gram-positive, rod-shaped single colonies, streak on the MRS plate medium, and culture at 37°C for 48h;
[0030] (5) Repeat the above steps 4 times
[0031] (6) Finally, the single colonies on the plate are cultured on the slant and stored.
[0032] Wherein, the preparation method of MRS...
Embodiment 2
[0034] Embodiment 2 A kind of product that improves oral health
[0035] A product for improving oral health. The active ingredient of the product is Lactobacillus salivarius JYLS-372. The product also contains isomaltooligosaccharide. The content of Lactobacillus salivarius JYLS-372 in the product is 100 billion / g.
[0036] The preparation method of above-mentioned product comprises the following steps:
[0037] (1) Lactobacillus salivarius JYLS-372 was inoculated on the MRS liquid medium and cultured, the inoculation amount was 1%, and the culture condition was 37° C. to obtain the MRS bacterial liquid;
[0038] Wherein, the preparation method of MRS liquid culture medium is:
[0039] Peptone 10g, beef powder 5g, longibacterium powder 4g, K 2 HPO 4 ·7H 2 O 2g, triammonium citrate 2g, sodium acetate 3H 2 O5g, glucose 20g, Tween 80 1mL, MgSO 4 ·7H 2 O 0.2g and MnSO 4 4H 2 O 0.05g dissolved in 1000mL distilled water;
[0040] (2) The MRS bacterial liquid is centrifuge...
Embodiment 3
[0042] Example 3 In vitro antibacterial effect of Lactobacillus salivarius JYLS-372 on 3 common oral pathogens
[0043] 1. Preparation of indicator bacteria suspension:
[0044] (1) Streptococcus mutans ATCC25175 was streaked and inoculated on the blood agar plate respectively, placed in an anaerobic tank, put into a microaerophilic gas-generating bag, and cultured in a microbial incubator at 35°C for 48 hours, and a single colony was picked and inoculated Place in 10mL BHI in an anaerobic tank, put a bag of microaerophilic gas producing bag, and culture in a microbial incubator at 35°C for 48 hours. After subculture for 3 generations, adjust the concentration of the bacterial solution to 10 6 CFU / mL as the indicator bacteria suspension;
[0045] (2) Porphyromonas gingivalis ATCC33277 was inoculated on a blood agar plate by streaking, placed in an anaerobic tank, put into an anaerobic gas-generating bag, and cultured in a microbial incubator at 35°C for 48 hours. A single col...
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