Bacillus licheniformis|132664 |BNCC

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Bacillus licheniformis

Subculture procedure	① Prepare 1-2 of the above plates; 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 ℃, 18-24h, aerobic
Storage conditions	2-8 ℃
Safety level	1
morphology	The colonies are 1-2 mm in diameter, circular, and opaque. They appear off-white on the surface, with a raised center and a moist texture, making them easy to lift. No pigment is produced. The organisms are Gram-positive (G⁺, appearing blue-violet) and rod-shaped (bacilli). Purity: pure.
Sharing mode	Public welfare sharing

Bacillus licheniformis

Storage conditions : 2~8 ℃

No. : 132664

Product format : freeze dried,200ul

Validity period : freeze-dried tube 24 months

Biosafety level: 1, handle in ultra-clear table or 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. 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.

Recovery/subculture :37°C, aerobic, nutrient agar/gravy medium. Nutritional agar medium: beef paste 3.0g, peptone 10.0g,NaCl 5.0g, agar 20.0g (not included in liquid medium), distilled water 1.0L,pH7.0. 121 ℃,15min.

Recovery steps:

(1)Prepare a flask of NB liquid.

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

(3)Draw 0.5mL of liquid medium into the freeze dried ampoule,make the strain pellet fully dissolved. transfer the liquid suspension to the liquid media, and culture in plate shaker at 37℃ (140r/min) for 18-24 hours.

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

item	test result
viability:	good viability, in 20h NB bacterial become turbid
colony morphology:	size: slightly smaller color: off-white shape: round edge: neat edge wet and dry: wet and smooth: smooth and bright transparency: translucent uplift: uplift
Conclusion:	good viability, and colony morphology is not abnormal, completely consistent with the above figure, qualified

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