Izolacija luteina iz cvetov žametnice (Tagetes erecta)
Hojnik Niderl, Maša ...
Lutein, ki se nahaja v listnati zelenjavi, oranžnem sadju in rumenjaku, je v prosti - nezaestreni obliki, največ (do 20-krat več) pa ga je prisotnega v cvetnih lističih žametnice (Tagetes erecta), ...zaestrenega z različnimi maščobnimi kislinami (helenien). Namen raziskav je bil študij ekstrakcijske kinetike izolacije luteina ob prisotnosti različnih topil. Določevali smo koncentracijo luteina v raztopini v odvisnosti od časa s pomočjo UV/VIS spektrofotometra. Iz dobljenih ekstrakcijskih krivulj smo s pomočjo uporabljenega matematičnega modela izračunali difuzijske koeficiente antioksidanta ter podali ujemanje eksperimentalnih in izračunanih rezultatov (AARD).
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