Streptococcus thermophilus|186558 |BNCC

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Streptococcus thermophilus

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 ℃; 2-3 days; anaerobic;
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.
Storage conditions	2-8 ℃
Safety level	1
morphology	MRS liquid culture appears turbid with substantial sediment at the bottom of the tube. The growth of the strain on agar plates is weak, and it is recommended to use liquid culture for cultivation.
Sharing mode	Public welfare sharing