IGEM:PennState/2006/Growthmedia: Difference between revisions
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<h2>BAD MEDIA (unkown??)</h2> | <h2>BAD MEDIA (unkown?? M9??)</h2> | ||
(SUPPLEMENTED W/ 0.1% YE) | (SUPPLEMENTED W/ 0.1% YE) | ||
Final concentrations: | Final concentrations: |
Revision as of 11:41, 8 August 2007
Growth Media
LB
Media(per liter)
- 10 g Bactotryptone
- 5 g Yeast Extract
- 10 g NaCl
- pH to 7.0 (~40uL 2M NaOH / L)
- Autoclave
Plates
- Add 15 g Bacto-Agar per liter LB
- Autoclave for 25 minutes
- If antibiotics necessary, add only once media has cooled to ~45ºC, or is comfortable to the touch
- Pour in sterile environment (~15ml per plate)
- Cool in such a way as to avoid accumulation of condensation, while maintaining sterility
- Seal with parafilm, place in bag, and store at 4ºC
SOB Media
Final concentrations
- 0.5% Yeast Extract
- 2% Tryptone
- 10mM NaCl
- 2.5 mM KCl
- 10 mM MgCl2
- 10 mM MgSO4
Procedure
1. To 1 L, add:
- 20 g bactotryptone
- 5 g bacto-yeast extract
- 0.5 g NaCl
- 0.19 g KCl
- Adjust to pH 7.0 w/ NaOH
2. Autoclave on slow exhaust for 25 min.
3. Add filter-sterilized MgCl2, MgSO4 solution to give final Mg2+ conc. of 20 mM (i.e. 10 mM MgCl2, 10 mM MgSO4)
SOC MEDIA SOB + 20 mM (final) glucose (aka dextrose)
BAD MEDIA (unkown?? M9??)
(SUPPLEMENTED W/ 0.1% YE) Final concentrations:
- 1X M9 salts (autoclaved)
- 1 mM MgSO4 (autoclaved)
- 0.16% glycerol (autoclaved)
- 0.148 μM thiamine/vitamin B1 (filter sterilized)
- 0.1% casamino acids (filter sterilized)
- 0.1% Yeast Extract (autoclaved)
Procedure:
1. These solutions should already be made, so add together w/sterile technique:
- 200 mL 5X M9 salts
- 1 mL 1 M MgSO4
- 2.27 mL 70% glycerol
- 50 μL thiamine (10mg/mL)
- 5 mL casamino acids (200 mg/mL)
- 10 mL 0.1g/mL Yeast Extract
- 782 mL sterile dH2O .
- 1 L M9 media (for plates just add 15 g bacto agar to recipe)