Method for raising stability for preserving catalase prepared by microbiological method
A catalase, storage stability technology, applied in the direction of enzyme stabilization, oxidoreductase, etc., can solve the problem of easy inactivation of liquid catalase, and achieve the effect of improving stability
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Embodiment 1
[0009] The catalase prepared by liquid submerged fermentation was removed by suction filtration, and the enzyme activity was 2000U / mL. It was stored at 40°C for 30d and 60d, and the enzyme activity retention rates were 21.3% and 2.4%, respectively. After it was concentrated by ultrafiltration for 10 times, the enzyme activity was 20000U / mL, and stored at 40°C for 30d and 60d, the enzyme activity retention rates were 74.7% and 9.6%, respectively.
Embodiment 2
[0011] The stabilizer sodium chloride 20mmol / L was added to the ultrafiltered enzyme liquid, and it was stored at 40°C for 60 days, and the enzyme activity retention rate was 94.0%.
Embodiment 3
[0013] Add stabilizer gelatin 0.5g / L to the enzyme solution after ultrafiltration, store at 40°C for 60 days, and the enzyme activity retention rate is 93.9%.
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