Emulsifier free emulsion: Comparative study between a new high frequencyn ultrasound process and standard emulsification processes

摘要

Emulsifier-free-emulsions were prepared with high frequency ultrasounds (HFU) generated by a piezoelectric ceramic transducer vibrating at 1.7 MHz. HFU emulsions were compared with emulsions made with standard emulsification processes: low frequency ultrasounds (LFU) and high pressure homogenization (HPH). Emulsions were prepared by combining sunflower oil with an aqueous phase either in the presence or absence of essential oil emulsifier. Oil droplets size distribution was determined by static