Bacillus subtilis subspecies|336934 |BNCC

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Bacillus subtilis subsp. subtilis

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.
Growth conditions	30 ℃; 18-24h; aerobic
Storage conditions	2-8 ℃
Safety level	1
morphology	The colony diameter is 2-4mm, circular, with irregular edges, opaque, gray white on the front, flat in shape, rough and dark on the surface, dry in texture, G+(blue purple), Bacillus, purity: pure
Sharing mode	Public welfare sharing

1.Description

1. Name: Bacillus subtilis subsp. subtilis

2. BNCC No.:336934

3. Biosafety level:4

2. Storage conditions:

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

3. Growth Conditions

1. Nutrient gravy agar medium: peptone 5.0g, beef extract 3.0g,NaCl 5.0g, agar 15.0g, distilled water 1.0L,pH7.0. [Note] Add 5mg MnSO4·H2O when culturing Bacillus,which is beneficial to spore production. 121 ℃,15min.

2. Atmosphere:aerobic

3, Temperature: 30 ℃

4.Notes:

1.Normal culturing time, 1-2days for bacterial, 3 days 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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