Method for extracting rhodamine toner oil and line products from brackish water rose

The invention discloses a method for extracting rose essential oil from a bitter rose and series products thereof, which comprises the steps as follows: a. extracting a rose extract: a1. the rose is put into a stainless steel pressure container; a2. environment protective Freon (R134a, R23) is injected into an extraction tank and the ratio of the material to a solvent is 1.0:1.3 to 1.5; a3. the extraction time is 2 to 5 and each time takes 1.0 to 1.5 hours; the temperature is 15 to 35 DEG C and the pressure is 0.15 to 0.75 MPa for obtaining the rose extraction liquid; and a4. the rose extraction liquid is added into a vaporizing tank, and decompress-vaporized for 80 to 110min under the pressure of 0.15 to 10Pa and the temperature of 30 to 50 DEG C, thus obtaining the rose extract; and b. extracting the rose essential oil and the rose neat oil; b1. the rose extract is dissolved into 1 to 4 times of 95 percent ethanol, arranged into the large tube of a tubular centrifuger, and then arranged in a high speed freezing centrifuger for obtaining rose wax and a rose centrifugal liquid; b2. the rose centrifugal liquid is condensed in vacuum for recycling the ethanol and obtaining the rose coarse oil; and b3. the rose coarse oil is finely stern by a rotary vaporizing/depressurizing fractionating instrument; and the rose net oil is left in a round flask.