| Express
Yourself With Expression
The best method for most citrus oil
extraction is expression, or cold-pressing. It is used to obtain
oil from bergamot fruit, a citrus fruit with a lemony flavor, native
to the Calabria area of southern Italy. (Bergamot oil is the key
ingredient in Earl Grey tea.) This method is very similar to the
pressing method used in extracting the fatty oils of olives, sesame
seeds and peanuts. Citrus oils lie in glands in the outer peel of
the fruit (the flavedo); below this outer layer is the spongy inner
layer, the albedo. When the peel is squeezed under a spray of water,
the oil becomes trapped in an emulsion of albedo, water, cellulose
and pectin. This mixture is screened, centrifuged and chilled to
remove the wax. The oil is given a final filtering and then is stored.
Hey, did you know that the orange
was originally introduced to the west by China? Actually, so were
peaches, apricots, camphor and cassia (the source for cinnamon and
an ingredient in cola drinks). Arabs brought the orange from China
and introduced it to Spain and Sicily during their occupation of
those areas in the 8th through the 11th centuries. Spain and Sicily
were the first areas to develop citrus plantations and were also
the first to use citrus oil. Sicilian oil produces one of the most
fragrant oils because of its dry climate, which creates a thicker
peel on the oranges to help retain moisture.
Until modern presses were available,
the most popular method of citrus oil extraction in Sicily was the
sponge method. It's pretty grueling stuff. First, the fruit would
be cut in half and then the fruit scooped out. Then the fruit peels
were placed in water and pressed between a convex-shaped piston
on one side, and a sponge on the other. The sponge was then periodically
wrung out by the worker. Although this method produces a fine-grade
oil, the technique has died out because machine extraction is cheaper,
and no doubt, less exhausting.
So, would you ever have thought perfume
to be so complicated? Jolique just figured you took a little of
this, a little of that and voilą! (Of course, if that were
the case, Jolique would be a master-perfumer by now, instead of
just writing about it.)
Bibliography:
-Guenther, Ernest, The Essential
Oils, Vol. 1, D. Van Nostrand Company, Inc., New York, 1949.
-Morris, Edwin, Fragrance: The Story of Perfume from Cleopatra
to Chanel, Charles Scribner's Sons, New York, 1984.
- Newman, Cathy, Perfume: The Art and Science of Scent, National
Geographic Society, Washington, D.C. 1998.
-Snively, John H., A Treatise on the Manufacture of Perfumes
and Kindred Toilet Articles, The Druggists Circular, New York,
1890.
Photo Credits:
(1): Poucher, William A., Perfumes
and Cosmetics, with Especial Reference to Synthetics, D. Van
Nostrand company, New York, 1923.
(2): Snively, John H., A Treatise on the Manufacture of Perfumes
and Kindred Toilet Articles, The Druggists Circular, New York,
1890.
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