title: Quality control of herbs: determination of amino acids in Althaea officinalis, Matricaria chamomilla and Taraxacum officinale.
abstract: Analysis of raw materials and final products need reliable methods for the standardization of natural product drugs. Legal guideline also emphasizes on the qualitative and quantitative analyses of the plant constituents in an herbal product. In this study, thin layer chromatography (TLC) and amino acid analyzer was used for the determination of amino acids in plant extracts. Samples for this study were standards and aqueous extracts from Althaea officinalis, Matricaria chamomilla and Taraxacum officinale. Different amino acids in the extracts were detected through TLC. An automatic amino acid analyzer was used for the quantification of amino acids in the plant extracts under study.
authors.affiliation: Department of Chemistry, Abdul Wali Khan University, Mardan, Pakistan.
authors.forename: Muhammad Nasimullah
authors.initials: MN
authors.lastname: Qureshi
authors.affiliation: Institute of Analytical Chemistry and Radiochemistry, Leopold-Franzens University Innsbruck, Innrain 6020 Innsbruck, Austria / Bionorica Research GmbH, Mitterweg 24, 6020 Innsbruck, Austria.
authors.forename: Guenther
authors.initials: G
authors.lastname: Stecher
authors.affiliation: Institute of Analytical Chemistry and Radiochemistry, Leopold-Franzens University Innsbruck, Innrain 6020 Innsbruck, Austria.
authors.forename: Guenther Karl
authors.initials: GK
authors.lastname: Bonn
mesh_terms: D031583:Althaea / Q000737:chemistry*; D000596:Amino Acids / Q000032:analysis*; D002855:Chromatography, Thin Layer; D031168:Matricaria / Q000737:chemistry*; D010936:Plant Extracts / Q000032:analysis; D011786:Quality Control; D031205:Taraxacum / Q000737:chemistry*
chemical_list: D000596:Amino Acids; D010936:Plant Extracts