Salmonella enteritidis subspecies|192090 |BNCC

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Salmonella enterica subsp.

Subculture procedure	① Prepare one test tube containing 5-10 mL of liquid culture medium and two 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 Transfer 0.5mL of liquid culture medium into a freeze-drying tube, dissolve it thoroughly, and then transfer it back into the liquid test tube, mixing well; ④ Transfer 0.2mL of bacterial suspension into a Agar plate, apply evenly, and repeat twice to obtain two plates; ⑤ Place all liquid test tubes and plates under the above cultivation conditions, and the bacterial strains can be used once they grow.
Growth conditions	37 ℃; 18-24h; aerobic
Storage conditions	2-8 ℃
Safety level	2
morphology	Size: General Color: Light Yellow Shape: Circular Edge: Neat Dry Wet: Wet Smooth: Smooth Transparency: Opaque Bulge Degree: Bulge
Sharing mode	Public welfare sharing

Salmonella enterica subsp.

No.: 192090

Product format: freeze dried,200ul

Storage conditions: 2~8 ℃

Validity period: freeze-dried tube for 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. Agar plates can be used directly. 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 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 media or two NA agar plates.

(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℃ for 18-24 hours (140r/min); or directly dispense 200ul of the liquid suspension into a NA agar plate evenly, then put the plates in incubator at 37℃ for 24-48 hours.

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

item	test results
viability:	good viability,in 20h NB bacterial fluid is turbid, bacterial fluid scribing plate colonies are obviously typical
colony morphology:	size: general color: light yellow shape: round edge: neat wet and dry: wet and smooth: smooth transparency: opaque uplift: uplift
conclusion:	good viability, and colony morphology is not abnormal, completely consistent with the above figure, qualified

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