Leaching solvent suitable for solanesol and nicotine and separation and recovery method

The invention provides a leaching solvent and a separation and recovery method suitable for solanesol and nicotine, the leaching solvent comprises one or two of tetrafluoroethane and tetrafluoropropene, and the leaching solvent is suitable for simultaneously leaching solanesol and nicotine from pretreated tobacco raw materials. The leaching solution can be used for leaching polar and non-polar components in the tobacco raw materials at the same time, due to the fact that the boiling point of the leaching solvent is low, the solvent can be vaporized, separated and recycled from the mixed leaching solution and material residues under the conditions of mild heating and vacuum suction, and the utilization rate of the solvent is increased. Therefore, the low boiling point characteristic of the leaching solvent is used for separating, recycling and reusing the leaching solvent in the material slag and the leaching product of the solvent, and the method has the advantages of being mild in leaching condition, good in