The
oil
is
obtained
by
cold
expression
of
the
peel
in
yields
of
approximately
4%,
based
on
the
weight
of
the
fruit.
The
oil
is
obtained
from
the
fresh
peel
with
or
without
previous
separation
of
the
pulp
and
the
peel.
It
has
a
characteristic
odor
and
taste
of
the
outer
part
of
fresh
lemon
peel.
A
less
valuable
quality
of
oil
is
obtained
by
steam
distillation
of
the
peel.
Product Name
Lemon oil
Appearance
slight yellow
liquid
Odor
with a
characteristic
fresh cool
aroma
CAS
8008-56-8
Relative
density
0.888 g/mL at
25 °C(lit.)
Refractive
index
1.472 ~ 1.475
Optical
rotation
+57°~+70°
Main
ingredients
d-Limonene80%
Storage
Store in cool
and dry place,
3 years' shelf
life when
properly
stored.
Lycopene,
a carotenoid found in plant foods, is
also a red pigment. Dark red acicular
crystal, soluble in chloroform, benzene
and grease but insoluble in water.
Unstable to light and oxygen, turning
brown when met with iron. lycopene is
widely found in tomatoes, tomato
products, watermelon, grapefruit and
other fruits. It is the main pigment in
ripe tomatoes and one of the common
carotenoids.