Fuente: WIPO "essential oil or extracts" The present invention provides a solar distillation apparatus for distilling the volatile fractions comprising a solar panel [10] connected to a steam generation tank [1] for circulating the solar energy current through resistive heating element [12] for water heating to generate steam vapor, a plant holding tank [3] with a mesh possessing openings [3i] for steam injection and holding small, medium or large volume of raw material for extraction, a condenser assembly [5] embedded with oil collection cum reflux line assembly [4] for providing desired condensation to the essential oil vapor, while providing complete visibility of collecting the essential oil; a purge gas assembly [9] for the removal of unwanted gases; wherein; the steam generated through solar energy is injected through small openings of mesh in the plant holding tank [3] by which the temperature is achieved to extract the volatile high purity essential oil; wherein the volatile essential oil vapor stream is directed to the condenser [5] embedded with oil collector cum reflux line [4]; wherein the high purity essential oil being immiscible in water easily separates out as an upper layer and the essential oil gets easily collected in the collection assembly [4].