Ultrasound Extraction (Sonication) - system involves using ultrasound with frequencies ranging from 20 kHz to 2000 kHz; this will increase the permeability of mobile partitions and produces cavitation.
Despite the fact that the manner is useful in a few cases, like extraction of Saffon , Stevia and many others.
It is big-scale application is constrained because of the higher costs.
One disadvantage of the technique is the occasional however known deleterious impact of ultrasound electricity (extra than 20 kHz) at the active constituents of medicinal flowers thru formation of unfastened radicals and consequently undesirable changes within the drug molecules.