with 12.7% (v/v) ethanol were added at concentrations 5%, 10%, 20%, 50% and 100% (v/v) in deionized water to form the aqueous phase. Grapeseed oil (Henry Lamotte, Germany) was the oil phase in all cases. Mastic resin (Chios Mastiha Growers Association, Hellas) was added at concentrations 1%, 2%and 3% (w/v).