Water-soluble cannabidiol micro-nano emulsion as well as preparation method and application thereof

The invention discloses a water-soluble cannabidiol micro-nano emulsion as well as a preparation method and application thereof. The invention belongs to the field of medicines and functional foods. The invention aims to solve the technical problems that the existing preparation method of water-soluble cannabidiol is complex in process, time-consuming and energy-consuming, high in requirement on the technical level of operators and low in water solubility and stability. The micro-nano emulsion is prepared from the following components in percentage by mass: 3%-18% of cannabidiol, 30%-70% of an oil-in-water emulsifier, 10%-20% of a cosurfactant and 10%-40% of water. The water-soluble cannabidiol micro-nano emulsion is prepared from an oil-in-water (O/W) emulsifier, a cosurfactant and water, the physiological activity functions of blocking breast cancer metastasis, treating epilepsy, resisting spasm, resisting anxiety, resisting bacteria, diminishing inflammation, resisting rheumatoid arthritis and the like of