Effect of refining processes on antioxidant capacity, total contents of phenolics and carotenoids in palm oils

Bioactive compounds of the lipid fractions of agro-industrial waste

“…The oils analyzed in this study presented values of total carotenoids that are lower than what found in palm oil, which presented level of 38.5 μg/g (Szydlowska-Czerniak et al, 2011). Oils of high carotenoid concentration, such as palm oil, present nutritional quality, considering they are sources of vitamin A, and they also present technological quality, since this pigment has antioxidant activity, preventing lipid oxidation.…”

Effect of refining process on antioxidant capacity, total phenolics and prooxidants contents in rapeseed oils

“…The extracts of the studied rapeseed oils were obtained in methanol according to the procedure described previously (Szydłowska-Czerniak, Trokowski, Karlovits, & Szłyk, 2011). The test tubes with rapeseed oils (3.00 g) and methanol (5 mL) were shaken for 30 min using a shaker SHKA 2508À1CE (Labo Plus, Warsaw, Poland) at room temperature in the dark.…”

Heat-oxidation stability of palm oil blended with extra virgin olive oil

“…Total phenols were found to be equal to 328, 221 and 335 mg/kg as gallic acid in EV(1), EV(2), and EV(3) samples, respectively. Palm fruit contains large amounts of water-soluble phenolic compounds and flavonoids with potent antioxidant properties; unfortunately these are largely lost during the milling process (Sundram et al, 2003;Szydłowska-Czerniak, Trokowski, Karlovits, & Szłyk, 2011). Actually, phenols were not found in PO; conversely, total phenols were determined in the PO/EV blends in amounts ranging from 66 to 262 mg/kg depending on the EV percentage.…”