PL
Badano procentowy udział kasów nasyconych, jedno- i wielonienasyconych w wybranych produktach typu fast food oraz majonezach i sosach sporządzanych na bazie majonezu. Wszystkie badane produkty zawierały izomery trans nienasyconych kwasów tłuszczowych, a ich udział w sumie wszystkich kwasów mieścił się w zakresie od 0,84 do 20,8%.
EN
Profiles of fatty acids and trans isomers of C16:1, C18:1, C18:2, and C18:3 in fast foods, chips, snacks, mayonnaise and sauces were evaluated. Fatty acid methyl esters were separated by gas chromatography with CP Sil 88 capillary column. The proportions of the saturated acids in the fast foods (hamburgers, cheeseburgers, fishburgers, chicken slices, apple pie, pizza) ranged from 11.7% to 48.1% of the total fatty acids; the corresponding figures for the monounsaturated fatty acids were from 22.2% to 54%, for polyunsaturated fatty acids from 9.03% to 38.4%, and for trans isomers from 1.58% to 20.8% (C18:1 isomers prevailing). The proportions of the saturated acids in the chips and snacks ranged from 34.8% to 38.4% of the total fatty acids; the corresponding figures for the monounsaturated fatty acids were from 37.9% to 41.4%, for polyunsaturated fatty acids from 16.6% to 19.2%, and for trans isomers from 1.3% to 2.07% (C18:3 and C18:2 isomers prevailing). The proportions of the saturated acids in the mayonnaise and sauces ranged from 5.4% to 10.3% of the total fatty acids; the corresponding figures for the monounsaturated fatty acids were from 22% to 47.9%, for polyunsaturated fatty acids from 40.9% to 65.5%, and for trans isomers from 0.84% to 3.42% (C18:3 and C13:2 isomers prevailing).