Strain capable of massively yielding glucose-6-acetic ester and method for synthesizing glucose-6-acetic ester
A technology of glucose and microbial strains, applied in the field of biochemical engineering, can solve the problems of long fermentation time, poor passage stability, and unsuitable for industrial production.
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Embodiment 1
[0056] The steps of the fermentation separation method for producing glucose-6-acetate are as follows:
[0057] (1) Inclined cultivation of strains
[0058] Inoculating the Bacillus sp. strain GXU-011 strain into the slant medium in the test tube to make the slant strain;
[0059] Among them, the slant culture medium of bacterial species is composed of the following parts by weight:
[0060] 40g sucrose, 2g yeast powder, KH 2 PO 4 0.5g, K 2 HPO 4 0.5g, MgSO 4 0.5g, 15g agar powder and 1000 parts of water;
[0061] The technological conditions for preparing the slant strains were pH 6.5, temperature 28°C, and culture time 24 hours.
[0062] (2) Inoculation and fermentation
[0063] Expand the cultivation of slant strains into seed liquid;
[0064] Connect the seed liquid to the fermentor at 5% of the inoculum for fermentation;
[0065] The seed liquid and fermentation liquid are composed of the following parts by weight:
[0066] 40 parts glucose, 5 parts peptone, 5 parts yeast powder, 1 part...
Embodiment 2
[0076] The steps of the fermentation separation method for producing glucose-6-acetate are as follows:
[0077] (1) Inclined cultivation of strains
[0078] Inoculating the Bacillus sp. strain GXU-011 strain into the slant medium in the test tube to make the slant strain;
[0079] Among them, the slant culture medium of bacterial species is composed of the following parts by weight:
[0080] Cane sugar 50g, yeast powder 6g, KH 2 PO 4 2g, K 2 HPO 4 2g, MgSO 4 2g, 20g agar powder and 1000 parts of water;
[0081] The technological conditions for preparing the slant strains were pH 7.0, temperature 30°C, and culture time 30 hours.
[0082] (2) Inoculation and fermentation
[0083] Expand the cultivation of slant strains into seed liquid;
[0084] Connect the seed liquid to the fermenter at 8% of the inoculum for fermentation;
[0085] The seed liquid and fermentation liquid are composed of the following parts by weight:
[0086] 50 parts of glucose, 8 parts of peptone, 8 parts of yeast powder, ...
Embodiment 3
[0093] The steps of the fermentation separation method for producing glucose-6-acetate are as follows:
[0094] (1) Inclined cultivation of strains
[0095] Inoculating the Bacillus sp. strain GXU-011 into the slant medium in the test tube to make the slant strain;
[0096] Among them, the slant culture medium of bacterial species is composed of the following parts by weight:
[0097] 60g sucrose, 8g yeast powder, KH 2 PO 4 1.5g, K 2 HPO 4 1.5g, MgSO 4 1.5g, 25g agar powder and 1000 parts of water;
[0098] The process conditions for preparing the slant strains were pH 7.5, temperature 32°C, and culture time 36 hours.
[0099] (2) Inoculation and fermentation
[0100] Expand the cultivation of slant strains into seed liquid;
[0101] Connect the seed liquid to the fermenter at 10% of the inoculum for fermentation;
[0102] The seed liquid and fermentation liquid are composed of the following parts by weight:
[0103] 60 parts glucose, 8 parts peptone, 9 parts yeast powder, 2 parts potassium ...
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