title: Comparison of Fatty Acid Composition in Selected Dietary Supplements Containing Conjugated Linoleic Acid.
abstract: The market of pharmaceutical products is offering a wide range of supplements. Most of the consumers believe that these products will improve their state of health, but are they getting what they want and what they are paying for? The aim of the study was to evaluate the quality of selected dietary supplements containing conjugated linoleic acid (CLA). All supplements were available in the Warsaw markets and bought from pharmacies. Assessment of the quality of food supplements was achieved by analysis of fatty acid using gas chromatography coupled with a mass spectrometer. On the basis of the investigations carried out, it was found that content of CLA in selected dietary supplements ranged between 282 and 528 mg by weight of a single capsule. The content of bioactive ingredients found in three of the four product supplements assessed was lower than was claimed by the manufacturer.
authors.affiliation: a Department of Biotechnology, Microbiology and Food Evaluation , Faculty of Food Sciences, Warsaw University of Life Sciences , Warsaw , Poland.
authors.forename: Dorota
authors.initials: D
authors.lastname: Derewiaka
authors.affiliation: a Department of Biotechnology, Microbiology and Food Evaluation , Faculty of Food Sciences, Warsaw University of Life Sciences , Warsaw , Poland.
authors.forename: Klara
authors.initials: K
authors.lastname: Nestorowicz
authors.affiliation: a Department of Biotechnology, Microbiology and Food Evaluation , Faculty of Food Sciences, Warsaw University of Life Sciences , Warsaw , Poland.
authors.forename: Rafał
authors.initials: R
authors.lastname: Wołosiak
mesh_terms: D008192:Deception; D019587:Dietary Supplements / Q000032:analysis*; D004345:Drug Industry / Q000592:standards; D006801:Humans; D044243:Linoleic Acids, Conjugated / Q000032:analysis*; D040541:Marketing / Q000592:standards; D011044:Poland
chemical_list: D044243:Linoleic Acids, Conjugated
keywords: GC-MS; conjugated linoleic acid; dietary supplements; esterification method