Rhizopus oryzae|BNCC189241 |BNCC

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Rhizopus oryzae

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 ℃
morphology	Filamentous fungi, the colony is obvious on the comprehensive PDA medium, the hyphae spread vigorously and grow, the initial hyphae are white and dense, and the later Stage hyphae light gray spores.
application	Production of lactic acid.
Sharing mode	Public welfare sharing

1. Description

1. Name: Rhizopus oryzae

2. BNCC No.: 189241

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. Comprehensive PDA: potato boiled juice 1000mL, potassium dihydrogen phosphate 3g, magnesium sulfate 1.5g, glucose 20g, vitamin B1 10mg, agar 20g,pH natural. Potato boiling solution: 200g of potato, peeled, cut into pieces, boiled in distilled water for 30min, constant volume of filtrate to 1000mL for later use. 121 ℃,15min.

2. Atmosphere: aerobic

3. Temperature: 28 ℃

4. Notes:

1.Normal culturing time, 24-48hours for bacterial, 72 hours 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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