Team:TU Delft/protocols/freezing bacterial stocks

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(Difference between revisions)
(New page: ==Freezing of bacterial stocks== ''Materials:'' - Bacterial culture - LB medium - 80% glycerol - Centrifuge ''Protocol:'' 1. Take 5 mL bacterial cells from the Erlenmeyer of a fre...)
 
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==Freezing of bacterial stocks==
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=Freezing of bacterial stocks=
''Materials:''
''Materials:''
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- Bacterial culture  
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- bacterial culture  
- LB medium
- LB medium
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- 80% glycerol
- 80% glycerol
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- Centrifuge
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- centrifuge
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1. Take 5 mL bacterial cells from the Erlenmeyer of a freshly grown culture and spin in a 15 mL tube for 10 minutes  
1. Take 5 mL bacterial cells from the Erlenmeyer of a freshly grown culture and spin in a 15 mL tube for 10 minutes  
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at 2.000 rpm (Eppendorf centrifuge).
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at 2,000 rpm (Eppendorf centrifuge).
2. Decant the supernatant without disturbing the pellet.
2. Decant the supernatant without disturbing the pellet.
3. Pipet on the pellet 0.5 mL 1% LB medium and 0.5 mL 80% glycerol and mix by vortexing and save in -80 °C freezer.
3. Pipet on the pellet 0.5 mL 1% LB medium and 0.5 mL 80% glycerol and mix by vortexing and save in -80 °C freezer.

Latest revision as of 11:05, 12 September 2010

Freezing of bacterial stocks

Materials:

- bacterial culture

- LB medium

- 80% glycerol

- centrifuge


Protocol:

1. Take 5 mL bacterial cells from the Erlenmeyer of a freshly grown culture and spin in a 15 mL tube for 10 minutes at 2,000 rpm (Eppendorf centrifuge).

2. Decant the supernatant without disturbing the pellet.

3. Pipet on the pellet 0.5 mL 1% LB medium and 0.5 mL 80% glycerol and mix by vortexing and save in -80 °C freezer.