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musashino

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Substantially higher amounts of oxygenated compounds and
lower amounts of monoterpenes hydrocarbons are present in
the essential oil of orange peels extracted by MAD in comparison
with HD. The oxygenated fraction in essential oil samples
from MAD (11.7%) was higher than HD (7.9%). Monoterpenes
hydrocarbons are less valuable than oxygenated compounds in
terms of their contribution to the fragrance of the essential oil.
Conversely, the oxygenated compounds are highly odoriferous
and, hence, the most valuable. The greater proportion of oxygenated
compounds in the MAD essential oils is probably due
to the diminution of thermal and hydrolytic effects, compared
with hydro-distillation, which uses a large quantity of water and
is time and energy consuming. Water is a polar solvent, which
accelerates many reactions, especially reactions via carbocation
as intermediates.

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musashino(½ð±Ò+10, ·­ÒëEPI+1): 2011-02-11 10:34:40
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