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musashino

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Microwave Clevenger or microwave accelerated distillation
(MAD) technique has been compared with the conventional
hydro-distillation method, for the extraction of essential oil
from fresh orange peels. This microwave extraction method
offers important advantages over traditional hydro-distillation,
namely; water and solvent free process, shorter extraction times
(30 min against 3 h for hydro-distillation); better yields (0.42%
against 0.39% for HD); higher oxygenated compounds; environmentally
friendly; lower production of by-products (as no water
or solvent is used); lower cost; and the possibility for a better
reproduction of natural aroma of the orange essential oil than
the hydro-distilled essential oil. SEM images of orange peels
untreated or subjected to MAD or HD emphasize the difference
between the two extraction methods used. Microwaves seem to
cause the rupture of the cells and the glands more rapidly than
in conventional hydro-distillation.

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musashino(½ð±Ò+10, ·­ÒëEPI+1): 2011-02-11 15:11:40
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