Method for producing lycopene through fermentation
A technology of lycopene and fermentation method, which is applied in the field of lycopene production by fermentation method, which can solve the problems of obstructed oxygen respiration, low rate of dissolved oxygen in the fermentation system, cumbersome process, etc., so as to alleviate the inhibition of osmotic pressure respiration and accelerate the transfer of oxygen rate, the effect of accelerating the rate of metabolic reactions
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Embodiment 1
[0026] ⑴Seed cultivation
[0027] The composition of the seed medium is: corn flour 47g / L, soybean flour 23g / L, KH 2 P0 4 0.5g / L, MgSO 4 ·7H 2 O0.5g / L, VB l0.01g / L, pH6.5. The seed medium was divided into four 500ml Erlenmeyer flasks by 60ml per bottle, sealed with 8 layers of gauze, and sterilized at 115°C for 20 minutes. When inoculating, wash the spores of B. trispora (+) bacteria and B. trispora (-) bacteria on the slant of each test tube with 10ml sterile saline, break up with glass beads and filter to make spores Suspension; take 1ml of the spore suspension of B. trispora (+) each time and put it into a bottle of seed medium; take 4ml of the spore suspension of B. trispora (-) each time, and put it in order 3 bottles of seed medium. Cultivate at 26-28°C and 180-200r / min for 36-44h to obtain 1 bottle of B. trispora (+) bacteria seed solution and 3 bottles of B. trispora (-) bacteria seed solution.
[0028] ⑵Fermentation culture
[0029] The composition of the fer...
Embodiment 2
[0048] (1) Seed culture (same as Example 1)
[0049] ⑶ fermentation culture
[0050] The composition of the fermentation medium is: corn flour 18g / L, soybean flour 42.5g / L, cottonseed oil 85ml / L, KH 2 P0 4 5.5g / L,MgSO 4 7H2O1g / L, VB l 0.02g / L, pH6.5. The fermentation medium was divided into six 500ml Erlenmeyer flasks by 50ml per bottle, sealed with 8 layers of gauze, and sterilized at 115°C for 20 minutes. The mixed seed liquid is obtained by mixing the culture liquid of B. trispora (+) and B. trispora (-) strains obtained by fermenting the seed liquid at a ratio of 1:3. 6 Erlenmeyer flasks containing fermentation medium were each transferred with 8ml of mixed seed solution, and 0.15 g of betaine monohydrate was added to 3 Erlenmeyer flasks containing fermentation medium in an amount of 3 g / L as the experimental group. The other 3 triangular flasks without betaine were used as blank group. Fermentation was completed at 26-28° C. and 200-250 r / min for 120 hours. 0.046g...
Embodiment 3
[0054] (1) Seed culture (same as Example 1)
[0055] ⑷Fermentation culture
[0056] The composition of the fermentation medium is: corn flour 18g / L, soybean flour 42.5g / L, cottonseed oil 85ml / L, KH 2 P0 4 5.5g / L,MgSO 4 ·7H 2 O1g / L, VB l 0.02g / L, pH6.5. The fermentation medium was divided into six 500ml Erlenmeyer flasks by 50ml per bottle, sealed with 8 layers of gauze, and sterilized at 115°C for 20 minutes. The mixed seed liquid is obtained by mixing the culture liquid of B. trispora (+) and B. trispora (-) strains obtained by fermenting the seed liquid at a ratio of 1:3. 6 Erlenmeyer flasks containing fermentation medium were each transferred with 8ml of mixed seed liquid, and 3 g / L of betaine hydrochloride was added to 3 Erlenmeyer flasks containing fermentation medium 0.15g as the experimental group. The other 3 triangular flasks without betaine were used as blank group. Fermentation was completed at 26-28° C. and 200-250 r / min for 120 hours. 0.046g imidazole was...
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