Method for preparing salidroside

Method for preparing salidroside

  • CN 102,382,152 A
  • Filed: 10/11/2011
  • Published: 03/21/2012
  • Est. Priority Date: 10/11/2011
  • Status: Active Application
First Claim
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1. a method for preparing rhodioside is characterized in that, said method comprises the steps:

  • 1) concentrates;

    , get liquid concentrator I the rhodiola extract concentrating under reduced pressure;

    2) alcohol precipitation;

    in step

         1) gained liquid concentrator I, add ethanol, leave standstill, filter, filtrating concentrates, and gets liquid concentrator II;

    3) purifying;

    with step

         2) gained liquid concentrator II crosses polyamide column, wash-out, and the elutriant concentrating under reduced pressure gets liquid concentrator III;

    4) refining;

    III crosses macroporous adsorptive resins with step

         3) gained liquid concentrator, wash-out, and elutriant is concentrated into dried, gets dry extract;

    5) crystallization;

    in step

         4) gets dry extract, add absolute ethyl alcohol, make dried cream dissolving, filter, in filtrating, add the trichloromethane removal of impurities, add the trichloromethane crystallization again, filter, promptly get the rhodioside crystallization.

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