Določanje vsebnosti vitamina C v različnih vrstah zelenjave : diplomska naloga = Determination of vitamin C content in different vegetables : graduation thesis
Kobovc, Tanja
V nalogi smo določali vsebnost vitamina C v različnih vrstah sveže zelenjave iz treh lokacij (Prekmurje, Ljubljana-uvoz in Primorska). Sedem vrst zelenjave (motovilec, zelje, krompir, endivija, ...cvetača, čebula, česen) smo analizirali s titracijsko metodo (titracija z 2,6-diklorfenolindofenolom) in pet vrst zelenjave (zelje, krompir, čebula, česen, brokoli) tudi s HPLC metodo. Statistična analiza rezultatov je pokazala, da se vsebnost vitamina C v zelenjavi iz različnih lokacij razlikuje in da sta obe metodi določanja vsebnosti vitamina C primerni za vse vzorce, razen zelja. Dalje smo ugotavljali vsebnost vitamina C v 28-ih vrstah zelenjave, nabavljene na razliřnih prodajnih mestih v Ljubljani. Analizo smo izvedli s HPLC metodo. Med proučevanimi vzorci vsebuje najveř vitamina C rumena paprika (115,04 mg/100g), sledijo rukola (109,04 mg/100 g), brokoli (107,02 mg/100 g) ter brstični ohrovt (104,92 mg/100 g), večina vzorcev vsebuje vsebnosti vitamina C med 25,71 mg/100 g in 97,97 mg/100 g, medtem ko devet vrst zelenjave vsebuje manj kot 10,95 mg/100 g vitamina C.
Type of material - undergraduate thesis
; adult, serious
Publication and manufacture - Ljubljana : [BF, Oddelek za živilstvo] : [T. Kobovc], 2000
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