Your shopping cart is empty!
Solvent Extraction Method
This method is best
suited for plant materials that yield low amounts of essential oil, that are
largely resinous, or that are delicate aromatics unable to withstand the pressure
and distress of steam distillation. This method also produces a finer fragrance
than any type of distillation method.
Extraction is a most commonly process which involves extracting oil from oil-bearing
materials by treating it with a low boiler solvent as opposed to extracting the oils
by mechanical pressing methods (such as expellers, hydraulic presses, etc.). Direct extraction of
rice bran, sal seed and soybean is also used.
properties of a good solvent extraction are very much like those of a
recrystallization solvent (favorable temperature coefficient; BP low
enough to be easily evaporated and less than MP of solute; does not react with
the solute). That means that other species are insoluble in the extraction
used solvents like ethyl acetate (8.1 %), diethyl ether (6.9 %),
dichloromethane (1.3 %) and chloroform (0.8 %) dissolved up to 10 % in water.
Water also dissolves in organic solvents: ethyl acetate (3 %), diethyl
ether (1.4 %), dichloromethane (0.25 %) and chloroform (0.056 %).
is very capable of dissolving a variety of different substances, it is such a
good solvent. And, water is called the "universal solvent"
because it dissolves more substances than any other liquid.
Extraction with different solvents like acetone, chloroform, distilled water, ethyl acetate, hexane and methanol were done using soxhlet apparatus. Briefly, for every 200 mL of the each solvent, 25 g of the crushed plant leaves powder was used for soxhlet extraction.