Method for increasing erythritol conversion rate through adding mixed magnesium salt
A technology of erythritol and conversion rate, applied in the field of microbial fermentation production, can solve the problems of low conversion rate and the like, and achieve the effects of fewer processes, simple operation and good economic benefits
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Embodiment 1
[0027] A method for improving erythritol conversion rate by adding mixed magnesium salts, comprising steps as follows:
[0028] (1) Cultivation of Candida lipolytica seed liquid: Under a sterile environment, use an inoculation loop to hook 2 loops of Candida lipolytica and transfer it to the shake flask medium, at 30°C, 105r / min Shake flask culture under conditions for 20 hours, take the Candida lipolytica shake flask culture fluid and inoculate it into the primary seed medium, the inoculum amount is 1% of the volume of the primary seed medium, at 30±1°C, 180r / Cultivate for 14 hours under the condition of 1 min; then insert the primary seed liquid into the secondary seed medium with 10% inoculation amount and cultivate it for 7 hours at 30°C and 180 r / min to obtain Candida lipolytica seeds liquid;
[0029] (2) Fermentation culture: the Candida lipolytica seed liquid that will prepare is inserted in the fermentor that fermentation medium is housed by 9% by the inoculum size, ...
Embodiment 2
[0035] A method for improving erythritol conversion rate by adding mixed magnesium salts, comprising steps as follows:
[0036] (1) Cultivation of Candida lipolytica seed liquid: Under a sterile environment, use an inoculation loop to hook 1 ring of Candida lipolytica and transfer it to the shake flask medium, and transfer it to the shake flask medium, at 32°C, 105r / min Shake flask culture under the conditions for 24 hours, take Candida lipolytica shake flask culture fluid and inoculate it into the first-level seed medium, the inoculation amount is 1% of the volume of the first-level seed medium, at 30±1°C, 200r / Cultivate for 20 hours under the condition of 1 min; then insert the primary seed liquid into the secondary seed medium with 9% inoculum amount, and cultivate for 12 hours at 32°C and 180-200 r / min to obtain lipolytic candida Yeast seed liquid;
[0037](2) Fermentation culture: the prepared Candida lipolytica seed liquid is inserted in the fermenter that the fermenta...
Embodiment 3
[0043] A method for improving erythritol conversion rate by adding mixed magnesium salts, comprising steps as follows:
[0044] (1) Cultivation of Candida lipolytica seed liquid: Under a sterile environment, use an inoculation loop to hook 2 rings of Candida lipolytica and transfer it to the shake flask medium, at 31°C, 105 rpm Shake flask culture was carried out under certain conditions, and then the shake flask culture solution of Candida lipolytica was inoculated into the primary seed medium at 31°C, and the stirring speed was 190r / min. 1% of the base mass; then the primary seed liquid is inserted into the secondary seed medium at 31° C. and cultivated for 10 h under the condition of 190 r / min with a 10% inoculation amount to obtain the Candida lipolytica seed liquid ;
[0045] (2) Fermentation culture: the Candida lipolytica seed liquid that will prepare is inserted in the fermenter that fermentation medium is housed by 9% by the inoculum size, at stirring speed 90 revs / m...
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