Storax is a balsam obtained from the trunk of Liquidambar orientalis Miller, commercially known as Levant Storax, or of Liquidambar styraciflua Linn, known as American Storax, belonging to family Hamamelidaceae.
STOREX
Synonyms
Styrax; Sweet oriental gum; Prepared Storax; Liquid Storax;
Styrax preparatus.
Biological Source
Storax is a balsam obtained from the trunk of Liquidambar orientalis Miller, commercially known as Levant Storax, or of Liquidambar
styraciflua Linn, known as American Storax, belonging to family
Hamamelidaceae.
Geographical Source
Levant Storax is a native to Asia Minor and Southwest of
Turkey. American Storax is produced chiefly in Honduras; found along the
Atlantic coast from Connecticut to Central America.
Collection
Levant Storax and American Storax are medium-sized trees
attaining the height of 15 m to 40 m, respectively. Levant Storax is a
pathological resin. In the early summer the bark of three to four years old
tree is injured by bruising. Cambium is activated to produce new wood with
balsam secreting ducts. The bark is gradually saturated with balsam which is
peeled off. The pieces of bark are pressed to get the product. The bark is
boiled in hot water and repressed. The crude balsam is poured into casks or
cans and exported.
American Storax exudes into natural spaces present in
between the bark and the wood. The presence of balsam in spaces may be detected
by excrescences on the outside of the bark. From these pockets the balsam is
tapped with gutters into containers which are exported in tin cans.
Storax is purified by dissolving the crude balsam in alcohol,
filtering, and evaporating the solvent under low temperature not to lose
volatile compounds. The alcohol insoluble part consists of vegetable debris and
a resin.
Characteristics
Levent Storax is a viscous, semiliquid, greyish, sticky,
opaque mass which deposits as a dark-brown, heavier, oleoresin-ous product on
standing. American Storax is a semisolid, sometimes solid mass softened by warming,
becoming hard, opaque, and darker coloured. Storax is transparent in thin
layers, has characteristic taste and odour, and is denser than water. It is
insoluble in water; almost completely soluble in warm alcohol, ether, acetone,
and carbon disulphide. Odour is agreeable and taste is balsamic.
Chemical Constituents
Storax is rich in two resin alcohol (50%): α-storesin and β-storesin and balsamic acids
(30–47%). The alcohols occur partly free and partly as esters of
cinnamic acid (10–20%). Storax also contains cinnamyl cinnamate or styracin
(5–10%), phenyl-propyl cinnamate (10%); ethyl cinnamate, benzyl cin-namate,
free cinnamic acid (5–15%), styrene, traces of vanillin, and volatile oil
(0.5–1%). Steam distillation of Storax yields a pale yellow or dark brown oil
(0.5–1.0%) known as oil of Storax. It has a pleasant but peculiar odour.
Uses
Storax is used as a stimulant, expectorant, parasiticide,
topical protectant, and an antiseptic. Pharmaceutical preparations like
Compound Benzoin Tincture, Friars’ Balsam, and Benzoin Inhalation are also
prepared from the Storax.
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