Escherichia coli|133721 |BNCC

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Escherichia coli

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 ℃; 18-24h; aerobic
Subculture procedure	① Prepare 2 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 Suck 0.5mL sterile water into the freeze-drying tube, dissolve 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 Place all the plates under the above cultivation conditions, and once the strains grow, they can be used.
Storage conditions	2-8 ℃
Safety level	1
morphology	The colony diameter is 1-2 mm, circular with regular edges and opaque. The obverse side is creamy white, while the reverse side is yellow, centrally raised with a smooth surface and moist texture, easily picked off. No pigment production is observed. Gram-negative (red), rod-shaped bacteria, purity: pure.
Sharing mode	Public welfare sharing