Method for extracting rutin from sophora japonica
A technology of sophora japonica and rutin, applied in the direction of fermentation and the like, can solve the problems of reduced yield, difficult treatment, environmental pollution, etc., and achieves the effects of low production cost, short extraction time, and no environmental pollution.
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[0015] The method for extracting rutin from Sophora japonica according to the present invention includes the following steps:
[0016] Step 1: Wash and dry the sophora rice in a fermentation tank, add 0.1-1% of rutin bioconvertase, and the total charge in the tank should be less than 70% of the tank capacity. After stirring evenly After 4-6 hours of closed fermentation, transfer to the extraction tank;
[0017] The second step: add a mixed solvent of methanol:ethanol=2:1 of 4.5 times the feed amount into the extraction tank, stir and extract for 30-40 minutes, filter to obtain the filtrate, and extract the filter residue repeatedly for at least three times;
[0018] Step 3: Combine the filtrates from the multiple extractions and place them in a distillation tower for distillation to recover the solvent to obtain a rutin extract;
[0019] The fourth step: Put the rutin extract obtained in the third step into the extraction tank, add 5 times the amount of the rutin extract to the mixed ...
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