Use of rubber solvent-resin solvent and miscella mixtures for extraction-expression of rubber and resins from guayule shrub

A process for extracting resin and rubber from guayule plants, comprising the steps of:

• adding a portion of a recycled miscella monophase solvent system to prepared guayule plants containing resin and rubber therein, said miscella monophase solvent system containing from about 50% to about 95% by weight of a hydrocarbon solvent and from about 5% to about 50% by weight of a polar solvent, wherein said hydrocarbon solvent is selected from the group consisting of an alkane having from 4 to 9 carbon atoms, a cycloalkane having from 5 to 10 carbon atoms, an aromatic or an alkyl substituted aromatic having from 6 to 12 carbon atoms, and combinations thereof, wherein said polar solvent is selected from the group consisting of an alcohol having from 1 to 8 carbon atoms, an ester having from 3 to 8 carbon atoms, a ketone having from 2 to 8 carbon atoms, an ether having from 2 to 8 carbon atoms, and combinations thereof, and wherein the amount of recycled miscella is at least 70% by weight,
• simultaneously and continuously extracting resin and rubber from said guayuale plants, and
• conducting at least one expression on said guayule plants.