title: Quantitative determination of alpha-tocopherol in Arbutus unedo by TLC-densitometry and colorimetry.
abstract: A quantitative determination of alpha-tocopherol in Arbutus unedo leaves was established by TLC-densitometry and colorimetry. Data obtained by TLC-densitometry were compared with those obtained by colorimetry. Also, the alpha-tocopherol content in leaves collected at different times of the year was studied comparatively. The highest amount of alpha-tocopherol was found in the March collection.
authors.affiliation: Department of Pharmacognosy, Faculty of Pharmacy, Ege University, Izmir 35100, Turkey. kivcakb@pharm.ege.edu.tr
authors.forename: B
authors.initials: B
authors.lastname: Kivçak
authors.forename: T
authors.initials: T
authors.lastname: Mert
mesh_terms: D002855:Chromatography, Thin Layer; D003124:Colorimetry; D003720:Densitometry; D029791:Ericaceae; D006801:Humans; D010936:Plant Extracts / Q000737:chemistry*; D018515:Plant Leaves / Q000737:chemistry; D012621:Seasons; D024502:alpha-Tocopherol / Q000737:chemistry*
chemical_list: D010936:Plant Extracts; D024502:alpha-Tocopherol