[Isolation-preparation and determination of chromones from Saposhnikovia divaricata].

Objective: To compare the contents of chromones in the different isolation and purification procedures from Saposhnikovia divaricata.

Method: The separation of six chromones was determined simultaneously by HPLC on a Kromasil C18 column at 35 degrees C with the methanol-0.1% phosphoric acid in gradient elution as the mobile phrase.

[Content comparison of diterpenoid pigments in different processed products of Gardenia jasminoides].

Objective: To compare the contents of diterpenoid pigments in the different processed products of Gardenia jasminoides.

Method: The separation of Crocin 1, Crocin 2, Crocin 3, Crocetin were determined simultaneously by HPLC on a kromasil C18 column at 35 degrees C with the m methanol-acetonitrile-0.3% formic acid anhydrous in gradient elution as the mobile phrase.

[Comparative studies on contents of iridoid in processed products from Gardenia jasminoides].

Objective: To compare the contents of iridoid in the different processed products from Gardenia jasminoides.

Method: Contents of geniposide and genipin gentiobioside in products were determined simultaneously by HPLC. A kromasil C18 column at 35 degrees C was used with the acetonitrile-0.