Listeria monocytogenes plus London subspecies|369708 |BNCC

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Listeria ivanovii subsp. londoniensis

Culture medium	BNCC352239
Description	Nutrient Agar
Composition	Peptone:10.0g, Beef Extract Powder:3.0g, NaCl:5.0g, Agar:15.0g, pH:7.3±0.1(25℃)
Growth conditions	37 ℃; 24-48 hours; aerobic;
Subculture procedure	① Prepare 1-2 of the above plates; ② After disinfecting the surface of the ampoule tube, open it in a 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.
Storage conditions	2-8 ℃
Safety level	2
morphology	Colony diameter 1-2 mm, circular form with entire margin, opaque, cream-white on obverse side and yellow on reverse side, convex elevation, smooth surface, moist texture, easily lifted, no pigment production observed, Gram-positive (blue-violet), bacilli, purity: pure culture.
Sharing mode	Public welfare sharing