2.2. Preparation of emulsions
The emulsions were prepared by the dispersion of 2 or 5 wt% of the emulsifier (soy lecithin or Tween 80) in the oil phase and then addition of the aqueous phase. The ingredients were then mechan- ically stirred (4000 or 9000 rpm) in glass vessel with a volume of 250 mL, using a Silverson L4RT homogenizer (Silverson Machines Ltd, UK), during 3 min at 20 °C. The emulsions were prepared rang- ing from 70 to 90 vol.% of oil phase.
The initial emulsions were O/W and the inverted ones were W/O.