Several reviews on application of UAE have been published in the past to extract bioactive compounds from herbs ,
plant origin metabolites , spooning, steroids and triterpenoids [4,9,14,17]. Ultrasonic field enables generation of microcavitations
in the liquid surrounding the plant material. The effects are mechanical disruption of the cell wall releasing its
content and local heating of the liquid, increasing the diffusion. The kinetic energy and ultrasound induce in the whole
volume following the collapse of cavitation bubbles at solid-liquid interfaces thus improving the mass transfer across it