Bacillus subtilis|359508 |BNCC

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Parabacteroides distasonis

Subculture procedure	①Prepare 1-2 plates and sterile water (pre placed in an anaerobic environment for 24 hours of deoxygenation) with typical bacterial colonies; ② Open the safety cabinet, burn the top with an alcohol lamp, quickly drip sterile water to break it, and then use tweezers to crush it; ③ Take 0.5mL of sterile water and transfer it into a freeze-drying tube. After fully dissolving the bacterial powder, transfer it into a Agar plate at a rate of 200 μ L per piece and apply evenly; ④ Place the petri dish under the above cultivation conditions for cultivation, and once the bacterial strain grows, it can be used.
Growth conditions	37 ℃; 4-5 days; anaerobic;
Storage conditions	2-8 ℃
Safety level	2
morphology	The colony diameter is 0.5-1mm, circular, with neat edges, opaque, gray white on the front, raised in the middle, bright and smooth on the surface, moist texture, easy to pick up, G - (red), Bacillus, purity: pure
Sharing mode	Public welfare sharing

Parabacteroides distasonis

Storage conditions : 2~8 ℃

No. : 359508

Product format :freeze dried, 200ul

Validity : 6 years

Biosafety level : 2, handle in safety cabinet

Receiving notice: if any abnormality is found on the day of receipt, please contact the customer service within 24 hours. If it is overdue, it is deemed that the bacteria are well. The freeze dried culture shall be used up once and shall not be retained. The bacterial viability will resume after 1-2 generation of recovery and can be used normally. Handling instructions of agar plate is enclosed. Please operate in strict accordance with this instruction, otherwise the replacement of bacteria are not be available in case of aberrant growth and loss of viability.

Growth conditions: 37 ℃, strictly anaerobic, Columbia blood plate (ready-to-use type) 4-5 days.

Recovery steps:

(1)Prepare 1-2 of above mentioned plates;

(2)Open it in the biosafety cabinet, sterilize of the ampoule, heat the tip in a flame, quickly drop sterile water to creak it, then break it with forceps;

(3) draw 0.5ml of sterile water into the freeze dried ampoule, make it fully dissolved, and distribute the solution to the plates well in 200ul/plate;

(4) The plate is cultured under the above-mentioned culture conditions, and the bacteria can be used after growth.

Recovery record: According to the recovery instructions, the results of the recovery are reported as follows:

Item	test results
viability	good viability, in 4days strain layer is obvious;colony is typical on the streaked plate
colony morphology: (above)	size: 0.5-1mm shape: round edge: neat transparency: opaque Color: off-white uplift: middle raised surface: smooth texture: moist and easy to stir
Conclusion	good viability, no abnormal colony morphology, qualified

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