Comparative Study of the Composition and Nutritional Value of Cold-Pressed and Refined Grapeseed Oil

Abstract

In this paper the comparative analysis of fatty acid composition and nutritional value of cold pressed oils of white and red grap seeds are compared to refined grape seed oil. The results showed that there are certain differences between cold pressed and refined oil, especially in nutritional values. Fatty acid composition of all samples was common for this type of oil, however, cold-pressed oils, both from the seeds of white and red grapes, had a significantly higher content of carotenoids and chlorophylls, as well as total tocopherols. On the other hand, refined oil was slightly enriched with phenolic compounds.

U ovom radu izvršena je uporedna analiza sastava masnih kiselina i odabranih pokazatelja nutritivne vrednosti hladno presovanih ulja semenki belog i crnog grožđa u odnosu na rafinisano ulje semenki grožđa. Rezultati su pokazali da postoje izvesne razlike između hladno presovanih i rafinisanog ulja, posebno po nutritivnoj vrednosti. Sastav masnih kiselina svih uzoraka je bio uobičajen za ovu vrstu ulja, međutim, hladno presovana ulja, kako od semenki belog tako i crnog grožđa, imala su znatno veći sadržaj karotenoida i hlorofila, kao i ukupnih tokoferola. Nasuprot tome, fenolnim jedinjenjima je nešto bogatije bilo rafinisano ulje.