Method for extracting compositions from plants

A method for extracting and concentrating CBD from hemp plant material comprising the steps:

• a) harvesting a hemp plant from which said hemp plant material is derived;
• b) shredding or grinding said harvested plant in step a) to produce particulate hemp plant material;
• c) mixing said particulate hemp plant material in step b) with an ethanol solvent to form a slurry;
• d) subjecting said slurry produced in step c) to ultrasonic energy, said ultrasonic energy being applied at a frequency ranging from 5 kHz-1 MHz and having a displacement amplitude in the range from about 20 to 100 mm with power being delivered to said slurry in a range from about 90 to about 160 watts per square centimeter of slurry treated, said ultrasound being applied for a duration ranging from 30 seconds to 5 minutes;
• e) filtering said slurry treated with ultrasound in step d) to remove wax, biomass and chlorophyll to derive a liquid extract;
• and
• f) treating said extract produced in step e) to remove water emanating from said hemp plant shredded in step b) and residual ethanol solvent introduced in step c) to produce a concentrated resultant extract.