Cryptosporidium|336535 |BNCC

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Alternaria alternata (Fries) Keissler

Subculture procedure	① Dissolve the frozen tube in a water bath (fungi at 30 ℃) and shake quickly for dissolution; ② Wipe the outer wall of the cryovial with an alcohol swab for disinfection, and then transfer it to a safe cabinet for operation; ③ Unscrew the tube cap, aspirate all the dissolved solution, and transfer it into 1-2 agar plates (each plate contains approximately 200 μL, and for anaerobic bacteria cultivation, the culture medium needs to be placed in an anaerobic environment for 24 hours to remove oxygen); ④ After spreading evenly, transfer to the above cultivation conditions for cultivation.
Growth conditions	28 ℃; 5-7 days; aerobic;
Storage conditions	Liquid nitrogen
Safety level	1
morphology	Spread growth, irregular edges, opaque, white on the front, yellow on the back, raised in the middle, rough and dark on the surface, dry texture, purity: pure
Sharing mode	Public welfare sharing

Alternaria alternata

Storage conditions: 2~8 ℃

No.: 336535

Product format: agar slant in 14mm test tube

Validity period: growing culture in 30 days

Biosafety level: 1 , handle in ultra-clean 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. Handling instructions agar slant and suspension liquid is enclosed. Please operate in strict accordance with this instruction, otherwise the replacement of bacteria are not be available in case of aberrant growth and lose of viability.

Growth conditions:28 ℃, aerobic, integrated PDA,3-5 days. Comprehensive PDA: potato boiling solution 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.

Recovery steps:

(1)Prepare 1-2 pieces of PDA plates;

(2)Sterilize the surface of test tube for the agar slant, open it in the biosafety cabinet;

(3)Cut into the pieces with aseptic inoculation hoe and inoculation shovel (see attached page). the size of square pieces is 0.5 × 0.5cm2;

(4)Lay flat the small pieces to the center of the agar plate;

(5)Put the plates under the above culture conditions, and the strains can be used when they grow.

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

item	test result
viability	good viability, in 3-5 days strain layer is obvious
colony morphology	Small filamentous fungi have obvious colonies, flocculent colonies, rapid growth, dark white at the initial stage, dark after aging, and brown on the back.
Conclusion	good viability, no abnormal colony morphology, qualified

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