Sisterna sucrose esters are stable at pH values between 4 and 8. At pH values above 8, saponification of the ester bond may occur. At pH below 4, acid aggregation may occur. Sucrose esters are also sensitive to electrolytes. Addition of a too high amount of electrolytes may cause flocculation of the sucrose esters. In general, mono-esters degrade faster than di- or tri-esters. An adjustment of the processing of the emulsion is in most cases sufficient to prevent flocculation. The best way to process emulsions, is to add the acidic components and/or electrolytes after emulsification. The sucrose esters will then be absorbed at the oil-water interface, and in this way better protected against acids and electrolytes.