Enterococcus faecalis|194769 |BNCC

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Enterococcus faecalis

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	30°C; 18-24h; aerobic
Subculture procedure	① Prepare 1 tube containing 5-10mL liquid medium and 2 plates; ② Open in a safety cabinet, cauterize the top with an alcohol lamp, then quickly add sterile water to rupture it; break it into pieces with forceps; ③ Pipette 0.5 mL of liquid medium into the freeze-dried vial, dissolve completely, then return to the liquid test tube and mix thoroughly; ④ Pipette 0.2 mL of bacterial suspension onto a Agar plate, spread evenly; repeat twice to obtain two plates; ⑤ Incubate all liquid tubes and plates under the specified conditions. The culture is ready for use once growth appears.
Storage conditions	2-8°C
Safety level	1
morphology	Colony diameter: 0.5–1 mm; circular, with neat edges; opaque, grayish-white on top; centrally raised; smooth surface; easily liftable; Gram-positive (blue-violet); cocci
Sharing mode	Public welfare sharing