Tocopherol content in edible plant oils

• Autorzy: Gliszczynska-Swiglo A. , Sikorska E. , Khmelinskii I. , Sikorski M.

Warianty tytułu

PL

Zawartosc tokoferoli w jadalnych olejach roslinnych

• Języki publikacji: EN

Abstrakty

EN

Edible vegetable oils were analysed for tocopherols by reversed-phase HPLC. These included refined corn, soybean, sunflower, rapeseed, grapeseed, and peanut oils, and cold-pressed extra-virgin olive, linseed, rapeseed, and sunflower oils. Total measured tocopherol concentrations varied in the range from 121 to 829 mg/kg. The contents of individual α-, (β+γ)-, and δ-tocopherols show a great diversity depending on the kind of oil. Moreover, the effect of photooxidation on the tocopherol content was studied in cold-pressed sunflower and rapeseed oils. These studies revealed only a minor decomposition of tocopherols under visible light.

PL

W pracy przedstawiono wyniki oznaczeń tokoferoli, metodą HPLC w odwróconym układzie faz, w olejach roślinnych, w tym w olejach rafinowanych (kukurydzianym, sojowym, słonecznikowym, rzepakowym, z pestek winogron, arachidowym) oraz tłoczonych na zimno (oliwie z oliwek, lnianym, rzepakowym i słonecznikowym). Wyznaczona całkowita zawartość tokoferoli (w zakresie 121 do 829 mg/kg) oraz zawartość poszczególnych związków z tej grupy (α-, (β+γ)-, i δ-tokoferoli) znacząco zależy od rodzaju oleju. Badania olejów tłoczonych na zimno słonecznikowego i rzepakowego naświetlanych promieniowaniem z zakresu widzialnego wykazały niewielki wpływ procesu fotoutleniania na zawartość tokoferoli.

Słowa kluczowe

EN

plant oil; edible plant oil; vegetable oil; tocopherol content; determination; high performance liquid chromatography; chlorophyll

• Wydawca: -
• Czasopismo: Polish Journal of Food and Nutrition Sciences
• Rocznik: 2007
• Tom: 57
• Numer: 4[A]
• Opis fizyczny: p.157-161,fig.,ref.

Twórcy

autor

Gliszczynska-Swiglo A.

• The Poznan University of Economics, ul.Grunwaldzka 6, 60-780 Poznan, Poland

autor

Sikorska E.

autor

Khmelinskii I.

autor

Sikorski M.

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