Lactobacillus acidophilus|186384 |BNCC

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Lactobacillus johnsonii

Culture medium	BNCC352238
Description	MRS agar medium
Composition	Peptone:10.0g, Beef Extract Powder:8.0g, Yeast Powder:4.0g, Glucose:20.0g, MgSO₄:0.2g, CH₃COONa:5.0g, C₆H₈O₇.(NH₄)₂:2.0g, K₂HPO₄:2.0g, MnSO₄:0.04g, Tween 80:1.0g, Agar:14.0g, pH:5.7±0.2(25℃)
Growth conditions	37 ℃; 18-24h; anaerobic;
Subculture procedure	Prepare 1-2 fresh agar plates (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 liquid culture medium or sterile water (placed in an anaerobic environment for 24 hours of deoxygenation in advance) and transfer it into a freeze-drying tube. Dissolve it thoroughly and mix well; ④ Transfer 0.2mL of bacterial suspension into a Agar plate, apply evenly, and repeat twice to obtain two plates; ⑤ Cultivate under the above conditions, and the strain can be used once it grows.
Storage conditions	2-8 ℃
Safety level	1
morphology	The colony diameter is 0.5-1mm, circular, with irregular edges, opaque, white on the front, raised in the middle, smooth on the surface, moist in texture, bright on the surface, G+(blue purple), Bacillus, purity: pure
Sharing mode	Public welfare sharing