HPLC assay of Echinacea purpurea/goldenseal (Hydrastis canadensis) combination formulations for phenolic acids, alkylamides, and alkaloids

Journal of Liquid Chromatography and Related Technologies

Volumn 25, Issue 2, 2002, Pages 263-274

  Schieffer, Gary W ^a   Kohn, Michael ^a  

^a Graham Development Inc   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ASSAYS; EXTRACTION; HIGH PERFORMANCE LIQUID CHROMATOGRAPHY; NEGATIVE IONS;

ANION-EXCHANGE;

CARBOXYLIC ACIDS;

ALKALOID DERIVATIVE; AMIDE; BERBERINE DERIVATIVE; ECHINACEA PURPUREA EXTRACT; HYDRASTINE; PHENOL DERIVATIVE;

ANION EXCHANGE; ARTICLE; DRUG DETERMINATION; DRUG FORMULATION; HIGH PERFORMANCE LIQUID CHROMATOGRAPHY; SOLID PHASE EXTRACTION;

ECHINACEA PURPUREA; HYDRASTIS CANADENSIS;

EID: 0036161739     PISSN: 10826076     EISSN: None     Source Type: Journal    
DOI: 10.1081/JLC-100108744     Document Type: Article

References (8)

1. Hydrastis canadensis (goldenseal) and other berberine-containing botanicals
2. Validated HPLC method for caffeic-acid derivatives and alkylamides in Echinacea solid-dosage forms using a single extraction procedure
3. Goldenseal
4. Separation and quantitation of isoquinoline alkaloids occurring in goldenseal
5. Pressurized liquid extraction and multiple ultrasonically-assisted extractions of hydrastine and berberine from goldenseal (Hydrastis canadensis) with subsequent HPLC assay
6. Solid-phase extraction and reversed-phase high-performance liquid chromatography of free phenolic acids in some Echinacea species