Enterotoxigenic Escherichia coli|186734 |BNCC

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Escherichia coli ETEC

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°C; 18-24h; aerobic;
Subculture procedure	① Prepare 1 tube containing 5–10 mL liquid medium and 2 plates; ② Open in a safety cabinet, cauterize the top with an alcohol lamp, then quickly add sterile water to shatter it; break into pieces with forceps; ③ Pipette 0.5 mL liquid medium into the freeze-dried vial, dissolve completely, then return to the liquid tube and mix thoroughly; ④ Pipette 0.2 mL of the bacterial suspension onto a Agar plate and 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 bacterial growth appears.
Storage conditions	2-8°C
Safety level	2
morphology	Single colonies measure 1–2 mm in diameter, are circular in shape with neat, opaque edges, grayish-white in color, and exhibit a raised center.
Sharing mode	Public welfare sharing