Enzyme method modified preparation method for improving activity of lily polysaccharides
A technology of lily polysaccharide and activity is applied in the field of biomodification preparation for improving the activity of lily polysaccharide, which can solve the problem of low activity of lily polysaccharide, and achieve the effects of improved immune activity, strong specificity and controllable reaction.
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Embodiment 1
[0015] According to the following conditions and operations, the complex enzymes were used to modify the lily polysaccharide: substrate lily polysaccharide concentration 30 / L; β-mannanase concentration 500U / L, β-glucanase 250U / L; pH 5.5 (PBS buffer liquid); temperature 40°C; time 0.5h. After the reaction, heat the solution to 100°C, keep it warm for 5min, then centrifuge (6000rpm) to remove the enzyme protein, put the supernatant into a dialysis bag (molecular weight cut-off: 5.0kDa) and dialyze (4°C, 12h), after dialysis The sample was centrifuged (5000rpm), and the supernatant was freeze-dried to obtain a white powder lily polysaccharide modified product (molecular weight: 70.0kDa), which increased the proliferative activity of macrophages by 40.5% compared with the substrate lily polysaccharide.
Embodiment 2
[0017] Lily polysaccharides were modified with complex enzymes according to the following conditions and operations: substrate lily polysaccharide concentration 35 / L; β-mannanase concentration 600U / L, β-glucanase 300U / L; pH 6.0 (PBS buffer liquid); temperature 45°C; time 40min. After the reaction, heat the solution to 100°C, keep it warm for 5min, then centrifuge (6000rpm) to remove the enzyme protein, put the supernatant into a dialysis bag (molecular weight cut-off: 5.0kDa) and dialyze (4°C, 12h), after dialysis The sample was centrifuged (5000rpm), and the supernatant was freeze-dried to obtain a white powder lily polysaccharide modified product (molecular weight: 50.3kDa), which increased the proliferative activity of macrophages by 45.2% compared with the substrate lily polysaccharide.
Embodiment 3
[0019] According to the following conditions and operations, the complex enzymes were used to modify lily polysaccharides: substrate lily polysaccharide concentration 40 / L; β-mannanase concentration 700U / L, β-glucanase 350U / L; pH 6.5 (PBS buffer liquid); temperature 45°C; time 50min. After the reaction, heat the solution to 100°C, keep it warm for 5min, then centrifuge (6000rpm) to remove the enzyme protein, put the supernatant into a dialysis bag (molecular weight cut-off: 5.0kDa) and dialyze (4°C, 12h), after dialysis Centrifuge the sample (5000rpm), take the supernatant and freeze-dry to obtain the modified product of lily polysaccharide (molecular weight: 40.5kDa) in the form of white powder. Compared with the substrate lily polysaccharide, the proliferative activity of macrophages is increased by 55.0%.
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