Aspergillus flavus|BNCC185691 |BNCC

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Aspergillus flavus

Culture medium	Comprehensive PDA agar (CPDA): potato boil 1.0L, glucose 20.0g,KH2PO4 3.0g,MgSO4 · 7H2O 1.5g, vitamin B1 trace, agar 20.0g,pH 6.0±0.2. Sterilization at 121 ℃ for 15min. Potato boiling liquid: weigh 200g of peeled potato pieces, boil in boiling water for 30min, and collect the filtrate to a constant volume of 1.0L.
Subculture procedure	(1) Prepare a test tube containing 5~10mL of liquid medium and 2 plates; (2) Open it in the safety 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 liquid culture medium into a freeze dried ampoule, fully rehydrate and transfer the solution to the liquid test tube, mix evenly; (4) inoculate a plate with 0.2mL of suspension liquid, repeat the step to obtain two plates; ⑤ Put all the liquid test tubes and plates under the above culture conditions for cultivation, and the strains can be used when they grow.
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 hyphae of the plate layer are white in the early stage and gradually turn yellow. The yellow spores are produced in the later stage, and the back of the medium is yellow.
Model strain	no
application	Anti-mildew and antibacterial. GJB 150.10 "Military Equipment Environmental Test Methods Mold Test" for Bacteria, GBT 1741 "Paint Film Mold Resistance Test Method" for Experiments
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