Industrial preparation method of quercetagetin

Industrial preparation method of quercetagetin

  • CN 105,541,775 A
  • Filed: 02/26/2016
  • Published: 05/04/2016
  • Est. Priority Date: 02/26/2016
  • Status: Active Application
First Claim
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1. a quercetagetin industrialized process for preparing, is characterized in that, described preparation method comprises the following steps:

  • (1) extract;

    after the alcohol being 50%-80% by marigold residue and volumetric concentration mixes, at room temperature stir 10-30min and mix, adopt ultrasonic-assisted extraction mode to extract, obtain quercetagetin crude extract;

    (2) centrifuging;

    carry out centrifugal to the quercetagetin crude extract obtained, then carry out filter press to supernatant liquor, obtains filter cake and quercetagetin clear liquor;

    (3) concentrated;

    at 40-60 DEG C, under-0.1 ~-0.08MPa condition, to the quercetagetin clear liquor vacuum concentration obtained, to the alcohol by volume content in quercetagetin clear liquor lower than 1%, to obtain quercetagetin concentrated solution;

    (4) centrifuging;

    carry out centrifugal to the quercetagetin concentrated solution obtained, then filter press is carried out to supernatant liquor, obtain quercetagetin crude extract;

    (5) purifying;

    at normal temperatures, adopts pure water to quercetagetin crude extract cleaning 1-4 time;

    Then vacuum-drying is to moisture content lower than 5%, pulverizes, crosses 30-50 mesh sieve, obtain quercetagetin.

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