Fecha de publicación: 09/09/2022 Fuente: WIPO "hemp" The invention relates to a method for extracting cannabinol from industrial cannabis sativa, and provides a method for extracting cannabinol from industrial cannabis sativa, which comprises the following steps of: 1, converting CO2 gas into liquid to enable the liquid to reach a supercritical state; 2, treating the raw material'industrial hemp 'to enable the raw material to reach the required quality state; 3, dissolving the supercritical CO2 liquid in an extraction kettle, and collecting an industrial hemp extracting solution; extracting through a separation kettle and a special rectifying column, and separating an extracting solution; 4, the CO2 liquid is reversely fed into a low-pressure separator, so that the CO2 liquid is separated out and enters a separation tank, and gas-liquid separation is rapidly formed; 5, returning the CO2 gas to the main storage tank, discharging the CBN oil from the separator, and returning the CO2 gas to the extraction kettle for recycling; according to the method, the CBN extraction rate can reach 90% or above, the CBN content is 10-20%, the method is scientific, the manufacturability is good, and the method can be directly applied to cosmetics, health care products and medicine markets; environmental pollution of products is reduced, and the purpose of organic green biological extraction is achieved.