Salt formulations for the fermentation of marine microorganisms
View Patent ↗Growth medium are disclosed for use in fermenting a marine microorganism. The medium comprise Potassium, Calcium, Strontium, Borate and Fluoride at specific concentrations. Alternatively, the growth medium comprises cobalt at specified concentrations or comprises vitamin B 12 at specified concentrations. Methods of producing certain desired compound by fermentation of a marine microorganism are also disclosed.
1. A method of fermenting a Salinospora microorganism, the method comprising:
(a) obtaining a fermentation medium comprising:
KCl concentration between 400 mg/L and 1 g/L,
MgSO 4 concentration between 2 g/L and 6 g/L,
CaCl concentration between 200 mg/L and 700 mg/L,
SrCl 2 concentration between 5 mg/L and 50 mg/L,
H 3 BO 3 concentration between 10 mg/L and 50 mg/L,
NaF concentration between 1 mg/L and 5 mg/L,
a carbon source,
a nitrogen source,
cobalt ion concentration between 0.2μMole/L and 2.0μMole/L, and
at least one of the following: NaCl at a concentration between 5 g/L and 30 g/L, Na 2 SO 4 at a concentration between 10 g/L and 40 g/L, and KCl at a concentration between 25 g/L and 35 g/L;
(b) inoculating the fermentation medium with the microorganism; and
(c) culturing the microorganism in the fermentation medium.
2. The method of claim 1 , wherein the fermentation medium comprises cobalt ion at a concentration between 0.2 μMole/L and 0.5 μMole/L.
3. The method of claim 1 , wherein the fermentation medium comprises cobalt ion at a concentration between 1.1 μMole/L and 1.9 μMole/L.
4. The method of claim 1 , wherein the fermentation medium comprises cobalt ion at a concentration between 0.4 μMole/L and 2 μMole/L.
5. The method of claim 1 , wherein the fermentation medium comprises NaCl at a concentration between 5 g/L and 30 g/L.
6. The method of claim 1 , wherein after step (a) the fermentation medium comprises sulfate species at a concentration between 0.07 M and 0.28 M.
7. The method of claim 1 , wherein the fermentation medium comprises NaCl and Na 2 SO 4 .
8. The method of claim 1 , wherein obtaining the fermentation medium comprises dissolving a salt formulation in water, wherein the salt formulation comprises:
KCl at a mass percent between 90% and 75%,
MgSO 4 at a mass percent between 20% and 5%,
CaClhd 2 at a mass percent between 5% and 3%,
SrClhd 2 at a mass percent between 0.3% and 0.03%,
H 3 BO 3 at a mass percent between 0.4% and 0.04%, and
NaF at a mass percent between 0.03% and 0.01%.
9. The method of claim 1 , wherein the fermentation medium comprises CoCl 2 .
10. The method of claim 9 , wherein the concentration of CoCl 2 is between 30 μg/L and 70μg/L.
11. The method of claim 9 , wherein the concentration of CoCl 2 is between 150 μg/L and 250 g/L.
12. The method of claim 1 , wherein the microorganism is capable of producing Salinosporamide A.
13. The method of claim 1 , comprising adding a resin to the fermentation medium.
14. The method of claim 13 , wherein the resin is added before 96 hours after step (b).
15. The method of claim 13 , wherein the resin is added before 24 hours after step (b).
16. The method of claim 13 , wherein the resin is added before step (b).
17. The method of claim 13 , wherein the resin is an adsorption resin.
18. The method of claim 13 , wherein the resin is a hydrophobic adsorption resin.
19. The method of claim 13 , wherein the resin includes at least one resin selected from the group consisting of Amberlite XAD2, Amberlite XAD4, Amberlite XAD7, Amberlite XAD7HP, Amberlite XAD16, Amberlite XAD761, Amberlite XAD 761, Amberlite XAD1180, Diaion HP2MG, Diaion HP20, Diaion HP21, Sepabeads SP825, Sepabeads SP850, Sepabeads SP70, Sepabeads SP700, and Sepabeads SP207.
20. The method of claim 13 , wherein the resin includes at least one resin selected from the group consisting of Amberlite XAD2, Amberlite XAD4, Amberlite XAD7, Amberlite XAD7HP and Amberlite XAD16.
21. The method of claim 13 , wherein the resin is Amberlite XAD7.
22. The method of claim 13 , wherein the fermentation medium comprises a ratio of resin to total nitrogen of 5:1 to 100:1.
23. The method of claim 13 , wherein the fermentation medium comprises a ratio of resin to total nitrogen of 20:1 to 40:1.
24. The method of claim 13 , wherein the resin is added in more than one portion.
25. The method of claim 1 , wherein the microorganism is Salinispora tropica.
26. The method of claim 1 , wherein the microorganism is Salinispora tropica NPS021184.
27. A method of fermenting a Salinospora tropica microorganism, the method comprising:
obtaining a medium comprising:
a carbon source,
a nitrogen source,
CaCO 3 concentration between 10 mg/L and 5 g/L,
Fe 2 (SO 4 ) 3 concentration between 5 mg/L and 1 g/L,
KBr concentration between 5 mg/L and 400 mg/L,
KCl concentration between 400 mg/L and 1 g/L
CaCl 2 concentration between 200 mg/L and 700 mg/L,
SrCl 2 concentration between 5 mg/L and 50 mg/L,
H 3 BO 3 concentration between 10 mg/L and 50 mg/L,
NaF concentration between 1 mg/L and 5 mg/L,
CoCl 2 concentration between 52 μg/L and 208 μg/L, and
at least one of the following: NaCl at a concentration between 5 g/L and 30 g/L, and Na 2 SO 4 at a concentration between 10 g/L and 40 g/L;
inoculating said medium with said microorganism; and
culturing said microorganism in said medium.