Bacillus cereus|342635 |BNCC

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Bacillus cereus

Subculture procedure	① Prepare 1 test 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 test 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.
Growth conditions	30°C; 18-24h; aerobic;
Storage conditions	2-8°C
Safety level	2
morphology	Colony diameter: 2–4 mm; circular with irregular margins; opaque, pale in color; flat morphology; rough surface; dry texture; G+ (blue-violet); bacilli
Sharing mode	Public welfare sharing

Description

1. Name: Bacillus cereus

2. BNCC No.: 342635

3. Biosafety level: 3

2. Storage conditions:
Storage of freezed dried ampoule and agar slant at 2°C to 8°C

3. Growth Conditions

1. Nutritious gravy agar: peptone 5.0g, beef extract 3.0g,NaCl 5.0g, agar 15.0g, distilled water 1.0L,pH7.0. [Note] Add 5mg MnSO4·H2Owhen culturing Bacillus，which is beneficial to spore production.

2. Atmosphere: aerobic

3,Temperature: 30 ℃,24h

4. Notes:
1.Normal culturing time, 1-2days for bacterial, 3days for yeast, 5-7days for mould, 7-10days for fungal.

2.Agar slant shall be inoculated asap, and do not keep the storage for more than 3 months.

3.Please recover the strains in strict accordance with this instruction, otherwise the replacement of the strain are not be available in case of viability loss caused by different media or growth conditions.

4.Waste generated from the handling process should be discarded after high-pressure sterilization

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