Fermentation medium for fermenting riboflavin and using method of fermentation medium
A fermentation medium and riboflavin technology, applied in the field of microorganisms, can solve the problem of low riboflavin fermentation units, and achieve the effects of increasing fermentation titer, increasing supply, and increasing production
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Embodiment 1
[0023] Prepare the basic medium, its composition and content are: glucose 10g / L, molasses 60g / L, sodium oleate 25mL / L, yeast powder 8g / L, potassium dihydrogen phosphate 1.5g / L, magnesium sulfate heptahydrate 0.15g / L, zinc gluconate 0.3g / L, and Tween 80 15mL / L were prepared into 9L, respectively packed into three 5L fermentation tanks, each tank was 3L, sterilized for later use, and 10mg of sterile erythromycin was added according to the proportion / L, chloramphenicol 10mg / L;
[0024] Prepare fed-batch medium, its composition and content are: inositol 10g / L, ammonium sulfate 8g / L, glucose 50g / L, magnesium sulfate heptahydrate 250mg / L were prepared 3L, sterilized for standby, and added in proportion to NADPH 10mg / L, tryptophan 190mg / L, alanine 150mg / L, arginine 150mg / L, biotin 150mg / L.
[0025] In the process of riboflavin fermentation and cultivation, insert the riboflavin-producing Bacillus subtilis seed culture into the basal medium prepared in this embodiment according to ...
Embodiment 2
[0028] Prepare the basic medium, its composition and content are: glucose 16g / L, molasses 54g / L, sodium oleate 23mL / L, yeast powder 8g / L, potassium dihydrogen phosphate 1.8g / L, magnesium sulfate heptahydrate 0.15g / L, zinc gluconate 0.5g / L, Tween 80 13mL / L, a total of 9L were prepared, respectively packed into three 5L fermentation tanks, each tank was 3L, sterilized for later use, and sterile erythromycin was added in proportion 10mg / L, chloramphenicol 10mg / L;
[0029] Prepare fed-batch medium, its composition and content are: inositol 8g / L, ammonium sulfate 7g / L, glucose 45g / L, magnesium sulfate heptahydrate 175mg / L, a total of 3L were prepared, sterilized for later use, and added in proportion Sterile NADPH8mg / L, tryptophan 170mg / L, alanine 120mg / L, arginine 130mg / L, biotin 125mg / L.
[0030] In the process of riboflavin fermentation and cultivation, insert the riboflavin-producing Bacillus subtilis seed culture into the basal medium prepared in this embodiment according to...
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