BeNa Culture Collection
info@bncc.com
| Subculture procedure | ① Prepare 1-2 tablets mentioned above; 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 Take 0.5mL of sterile water and transfer it into a freeze-drying tube. After fully dissolving the bacterial powder, transfer it into two plates, each plate containing about 200 μ L, 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 | 37 ℃; 18-24h; aerobic |
| Storage conditions | 2-8 ℃ |
| Safety level | 1 |
| morphology | Size: 1-2mm Shape: Circular Edge: Irregular Transparency: Opaque Color: Grey White Rise: Flat Surface: Rough Texture: Easy to Lift |
| Sharing mode | Public welfare sharing |
Listeria seeligeri
Storage conditions: 2~8 ℃
No.: 336968
Product format: freeze dried, 200ul
Validity period: 6 years
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:37 ℃, aerobic, brain heart infusion agar (BHIA),18-24h. Brain heart extract agar (BHIA) : brain extract powder 5.0g, heart extract powder 12.5g, peptone 5.0g, tryptone 10.0g, sodium chloride 5.0g, glucose 2.0g, disodium hydrogen phosphate 2.5g, agar 20.0g (without liquid medium),pH 7.4±0.2. 121 ℃,15min sterilization
Recovery steps:
(1)Prepare a test tube containing 5-10mL of liquid culture medium and 2 plates;
(2)Open 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 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.
Recovery record: According to the recovery instructions, the results of the recovery are reported as follows:

| item | test result |
| viability | good viability, in 18-24h liquid medium become turbid, obvious strain layer occurs on the plate; colony is typical on marked plate |
| colony morphology: (above) |
size: 1-2mm shape: round edge: irregular transparency: opaque color: off-white uplift: flat surface: rough texture: easy to stir |
| conclusion | good viability, no abnormal colony morphology, qualified |