Sample preparation
Five grams of seed extractwas added to 10 mL of purewater, and
the mixture was allowed to autolyze for 30 min at 25 C. This paste
was extracted twice with 50 mL of dichloromethane, which was
combined and salted with 2.5 g of anhydrous sodium sulfate. The
dichloromethane fraction was dried at 30 C under a vacuum on a
rotary evaporator (Büchi RE12, Flawil, Switzerland). The residue