Efficient culture medium as well as preparation method and application thereof
A culture medium and high-efficiency technology, applied in the biological field, can solve the problems of limited increase in fermentation titer, lack of specific elements, precursors and promoters in the culture medium, and achieve suppression of by-product formation, improvement of fermentation titer, and economic benefits. significant effect
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[0023] Example 1
[0024] The high-efficiency culture medium provided in this embodiment is composed of the following components: soybean meal powder, yeast powder, cottonseed protein peptide, starch, sodium dihydrogen phosphate, sodium bromide, acetyl coenzyme A, and rare earth nitrate.
[0025] Wherein, the rare earth nitrate is cerium nitrate.
[0026] Among them, the mass ratio of soybean meal powder, yeast powder, cottonseed protein peptide, starch, and sodium dihydrogen phosphate in the medium is 3.5:1.5:1.5:5:0.05.
[0027] Among them, the weight content of sodium bromide in the culture medium is 0.08%, the weight content of acetyl-CoA is 0.06%, and the weight content of rare earth nitrate is 0.03%.
[0028] Among them, the protein content of soybean meal powder is 40-55%, the protein content of yeast powder is 45-55%, and the protein content of cottonseed protein peptide is 55-70%.
[0029] Among them, the cottonseed protein peptide is produced by enzymatic hydrolysis, and the en...
Example Embodiment
[0031] Example 2
[0032] The difference between this embodiment and Embodiment 1 is: (1) The rare earth nitrate uses praseodymium nitrate. (2) The mass ratio of soybean meal powder, yeast powder, cottonseed protein peptide, starch, and sodium dihydrogen phosphate in the medium is 3:1.5:1.5:5:0.05. (3) The weight content of sodium bromide in the culture medium is 0.02%, the weight content of acetyl-CoA is 0.02%, and the weight content of rare earth nitrate is 0.03%.
Example Embodiment
[0033] Example 3
[0034] The difference between this embodiment and Embodiment 1 lies in: (1) Neodymium nitrate is used as the rare earth nitrate. (2) The mass ratio of soybean meal powder, yeast powder, cottonseed protein peptide, starch, and sodium dihydrogen phosphate in the medium is 4:1.5:1.5:5:0.05. (3) The weight content of sodium bromide in the culture medium is 0.1%, the weight content of acetyl-CoA is 0.06%, and the weight content of rare earth nitrate is 0.03%.
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