A new ultrasonic cavitation technology for plant material pectin hydrolysis- extraction was developed. Experimental studies for determine the main parameters of ultrasonic vibrations to provide effective realization of the process as a part of mechatronic systems. Physical and mathematical models of extraction were compiled. Necessary technological cavitation equipment as a part of mechatronic systems to realize the proposed technology was developed. Experimentally confirmed the high quality of pectin obtained with new technology.