Experimental
2.1. Materials
β-Carotene, linoleic acid, α,α-diphenyl-β-picrylhadrazyl (DPPH)
and butylated hydroxyanisole (BHA) were obtained from E. Merck
(Germany). Solvents used for extraction were methanol (GC grade)
and ethanol, obtained from Merck (Darmstadt, Germany). The
purified water was obtained from water distillation plants in our
laboratory. All other chemicals were of analytical grade or GC grade.
UV spectra UV–Visible spectra measurements were done using a
HITACHI, U-2000 spectrophotometer.