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).
Przeprowadzono badania wartości odżywczej frytek, hot dogów i wyrobów typu hamburgera serwowanych w restauracji McDonald's oraz w ulicznych punktach sprzedaży. Badane produkty zawierały średnio ok. 14% białka, 14-38% węglowodanów i ok. 20% tłuszczu, co decydowało o ich zbyt wysokiej w stosunku do masy wartości energetycznej.
EN
Fried potato chips, hot dogs and hamburger-type products obtained from McDonald's restaurant and various street sellers in Cracow were tested for their dry mass, protein, fat, carbohydrate content and energy value. The examined products contained 4% - 15% proteins, 14% - 38% carbohydrates and 6% - 26% fat. Their energy value was 208-337 kcal/100 g, or 330-550 kcal per portion. It has been found that the energy value of the products was too high in relation to their mass, and that fats accounted for as much as 50% of the energy value. Excessive uptake of the examined products, especially between meals, may result in overweight and obesity.
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