InTable 1 it is shown that the surface tension values for 100% (v/v)wine with alcoholic grade around 12.5%, which is the average alco-holic grade of the two wines used in this study, are considerablylower than the above reference values. Even more surprising is the fact that the red wine exhibits higher surface tension than the whiteone (45.9 mN/m and 42.0 mN/m, respectively), although the former– being a red wine – has more phenolic compounds, proteins, etc.that could lower more its surface tension [11–17]. This finding canbe attributed to the fact that the white wine used in this study isproduced from a Muscat grape variety which is known for its highcontent in aromatic compounds. In any case, even with small per-centages of wine – whether red or white – in the aqueous phase,e.g. 5% (v/v), the decrease of the surface tension value compared tothat of water is significant.The determination of the interfacial tension of a two-phasesystem can offer valuable information about the stability of anemulsion prepared from the particular two phases.