Aspergillus flavus|185691 |BNCC

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Aspergillus flavus

Subculture procedure	① Prepare the above two tablets; ② After disinfecting the surface of the ampoule tube, open it in a safety cabinet, burn the top with an alcohol lamp, quickly drip sterile water to break it, and then use tweezers to crush it; ③ Take 0.5mL of sterile water and transfer it into a freeze-drying tube. After fully dissolving the bacterial powder, transfer it into 2 plates at a rate of 200 μ L per Agar plate and apply evenly; ④ Place the petri dish under the above cultivation conditions for cultivation, and once the bacterial strain grows, it can be used.
Growth conditions	28 ℃; 5-7 days; aerobic;
Storage conditions	2-8 ℃
Safety level	1
morphology	Small filamentous fungi have obvious colonies on the comprehensive PDA medium. The mycelium of the agar layer is white in the early stage and gradually turns yellow, and produces yellow spores in the later stage. The back of the medium is soil yellow
Sharing mode	Public welfare sharing

Aspergillus flavus

No. 185691

Product format: freeze dried,200ul

Storage conditions: 2~8 ℃

Validity period: 6 years

Biosafety level: 1, handle in ultra-clear table or safety cabinet

Receiving notice: if any abnormality is found on the day of receipt, please contact the customer service within 24 hours. If it is overdue, it is deemed that the bacteria are well. The freeze dried culture shall be used up once and shall not be retained. The bacterial viability will resume after 1-2 generation of recovery and can be used normally. Please operate in strict accordance with this instruction, otherwise the replacement of bacteria are not be available in case of aberrant growth and loss of viability.

Growth conditions :28 ℃, aerobic, integrated PDA. Comprehensive PDA:20 potato juice 1L, glucose 20g ,KH₂PO₄ 3g, MgSO₄.7H₂O 1.5g, thiamine trace, agar 15g,pH natural.

Recovery steps:

(1)Prepare 2 pieces of PDA plates or 2 agar slants;

(2)Open the ampoule in the biosafety cabinet, heat the tip of ampoule in a flame, quickly drop sterile water to creak it, then break it with forceps;

(3)Draw 0.5ml of sterile water into the freeze dried ampoule, make it fully dissolved, and distribute the solution to the plates well in 200ul/plate; or transfer appropriate solution to the agar slant.

(4)Place the plates uprightly and agar slant obliquely under the above culture conditions for 3-7 days. Or contact our technicians for the inoculation of agar slant - filamentous fungi.

Recovery record: According to the recovery instructions, the results of the recovery are reported as follows:

item	test results
viability	good viability, in 4 days plate colony is obvious
colony morphology:	The bacteria are obviously visible in the comprehensive PDA agar medium, with white hyphae, green spores and folds in the medium.
Conclusion:	good viability, no abnormal colony morphology, completely consistent with the above figure, qualified

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