Production process of flavonoids by liquid-solid two-phase culture of Phellinus japonica
A technology of phellinus and flavonoids, applied in the field of biological fermentation engineering, to achieve the effect of simple cultivation process and increased yield
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Embodiment 1
[0018] (1) Sterilize the DM130 macroporous adsorption resin, and the sterilization conditions are 121°C, 20min;
[0019] (2) Insert Phellinus linteus strain into the liquid fermentation medium, carry out shaker culture (28°C, 150rpm), when the culture time is 3, 4, 5 or 6 days, add 50g / 100ml DM130 macroporous adsorption resin, and then continue to cultivate, and set a blank control;
[0020] (3) after fermenting for 7 days, filter to obtain resin, desorb with 60% ethanol for 12 hours, measure and recover flavonoids;
[0021] The experimental results are as figure 1 As shown, the addition time of the adsorption resin has an impact on the yield of flavonoids. The premature addition of the resin will absorb a large amount of nutrients in the medium, which will affect the growth and metabolism of the bacterial cells; if the resin is added too late, the adsorption efficiency is not high enough. , can not achieve the effect of adsorbing flavonoids, releasing product inhibition and...
Embodiment 2
[0023] (1) Sterilize the DM130 macroporous adsorption resin, and the sterilization conditions are 121°C, 20min;
[0024] (2) Insert Phellinus linteus strain into the liquid fermentation medium, carry out shaker culture (28°C, 150rpm), when the culture time is 4 days, add 25, 50, 100 or 200g / 100ml of DM130 macroporous adsorption respectively resin, and then continue to cultivate for 3 days, and set a blank control;
[0025] (3) filter to obtain resin after fermentation finishes, desorb with 60% ethanol for 12 hours, measure and reclaim flavonoids;
[0026] The experimental results are as figure 2 As shown, the amount of adsorption resin added has an impact on the yield of flavonoids. The addition of too much adsorption resin will affect the dissolved oxygen status in the medium, and insufficient oxygen supply will affect the growth and metabolism of bacteria; The adsorption effect of flavonoids is not good, and the yield of flavonoids cannot be improved very effectively. Ad...
Embodiment 3
[0028] (1) Sterilize the DM130 macroporous adsorption resin, and the sterilization conditions are 121°C, 20min;
[0029] (2) insert Phellinus linteus strain in the liquid fermentation medium, carry out shaking table culture (28 ° C, 150rpm), when the culture time is 4 days, add 50g / 100ml DM130 type macroporous adsorption resin, and then continue to culture for 3 days , and set a blank control;
[0030] (3) filter to obtain resin after fermentation finishes, desorb with 60% ethanol for 12 hours, measure and reclaim flavonoids;
[0031] The experimental results are as image 3 In the two-phase culture experiment, adding DM130 macroporous adsorption resin can effectively adsorb flavonoids, relieve the inhibitory effect of metabolite accumulation, and promote Phellinus linteus to secrete flavonoids. about 35%.
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