Bifidobacteria viable bacteria preparation and special-purpose protective agent thereof
A technology of bifidobacteria and live bacteria preparations, applied in the direction of bacteria, etc., can solve the problems of unresolved storage at room temperature and easy inactivation, and achieve the effect of solving the difficulty of storage at room temperature, easy operation, and high application value
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Embodiment 1
[0021] Embodiment 1, the preparation of bifidobacterium live bacteria preparation and its storage time test
[0022] One, the preparation of Bifidobacterium live bacteria preparation
[0023] 1. Activation of Bifidobacteria
[0024] The strain Bifidobacterium adolescentis DM8504 (purchased from Dalian Medical College) was inoculated on the modified BS agar slant medium. Then put it into an anaerobic incubator, and cultivate it anaerobically at a temperature of 37±0.5° C. for 48-72 hr.
[0025] Components of the improved BS medium: tomato juice 200ml, soybean peptone 15g, yeast extract 6g, glucose 10g, Tween 80 1g, tryptone 10g, beef extract 0.3g, soluble starch 0.5g, beef liver extract 5ml, compound salt Solution 4.0ml, L-cysteine hydrochloride 0.5g, agar 15g (used when preparing solid medium). Wherein the composition of compound salt solution is: K 2 HPO 4 1.0g, CaCl 2 0.2g, MgSO 4 ·7H 2 O 0.48g, KH 2 PO 4 1.0g, NaHCO 3 10.0g, NaCl 2.0g.
[0026]The preparat...
Embodiment 2
[0071] Embodiment 2, the preparation of bifidobacterium live bacteria preparation and its storage time test
[0072] One, the preparation of Bifidobacterium live bacteria preparation
[0073] 1. Activation of Bifidobacteria
[0074] The strain Bifidobacterium infantis ATCC 15697 (purchased from the American ATCC Culture Collection Center) was inoculated on the slant medium of the modified TPY medium. Then put it into an anaerobic incubator, and cultivate it anaerobically at a temperature of 37±0.5° C. for 48-72 hr.
[0075] The above-mentioned improved TPY medium is made of the following components: tryptone 12g / L, peptone 3g / L, soybean peptone 5g / L, glucose 5g / L, maltooligosaccharide 5g / L, yeast extract powder 5g / L L, Tween-801.0g / L, L-cysteine hydrochloride 0.5g / L, beef liver extract 200mL / L, tomato juice 100mL / L, mixed salt solution 5mL / L, distilled water 675mL / L, adjusted pH to 7.0-7.2, 121°C, sterilize for 15-20 minutes.
[0076] Mixed salt solution: K 2 HPO 4 20...
Embodiment 3
[0112] Embodiment 3, the preparation of bifidobacterium live bacteria preparation and its storage time test
[0113] One, the preparation of Bifidobacterium live bacteria preparation
[0114] 1. Activation of Bifidobacteria
[0115] The strain Bifidobacterium adolescentis CGMCC 1.2190 (purchased from China General Microorganism Culture Collection and Management Center) was inoculated on the modified BS agar slant medium. Then put it into an anaerobic incubator, and cultivate it anaerobically at a temperature of 37±0.5° C. for 48-72 hr.
[0116] Components of the improved BS medium: tomato juice 200ml, soybean peptone 15g, yeast extract 6g, glucose 10g, Tween 80 1g, tryptone 10g, beef extract 0.3g, soluble starch 0.5g, beef liver extract 5ml, compound salt Solution 4.0ml, L-cysteine hydrochloride 0.5g, agar 15g (used when preparing solid medium). Wherein the composition of compound salt solution is: K 2 HPO 4 1.0g, CaCl 2 0.2g, MgSO 4 ·7H 2 O 0.48g, KH 2 PO 4 1.0...
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