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HHaloxylon
salicornicum, Hamamelis
virginiana, Hamiltonnia
suaveolens,
Harpagophytum
Procumbens DC,
Helicteres
isora,
Hintonia
standleyana, Hintonia
latiflora,
Hordeum
vulgare,
Hovenia
thunb,
Humulus
lupulus,
Hydnocarpus
wightiana,
Hydrastis
canadesis, Hygrophila
longoifolia,
Hygrophila
auriculata,
Hylocereus
undatus,
Hypoxis
hemerocallidea,
Hemionitis
arifolia
,
Helichrysum
plicatum
,
Helichrysum
gravelolens,
Hibiscus
rosa,
Heliotropium
zeylanicum,
Harpephyllum
caffrum
Hamamlis
virginiana |
Taxonomy:
Kingdom : Plantae
Division :
Magnoliophyta
Class
: Magnoliopsida
Order
: Saxifragales
Family
: Hamamelidaceae
Genus
:Hamamlis
Species : H. virginiama
Chemical
Composition:
Witch
hazel leaves contain about 7% to 10% of tannins. There is some
dispute as to the actual composition of the tannin with
hamamelitannin, digalloylhamamelose and various gallotannins
having been identified. It
is not clear whether hamamelitannin is found in the leaves.
Recent sources list from 8%
to no hamamelitannin in leaves.
The bark contains from 1% to 7% hamamelitannin and smaller
amounts of condensed tannins.
Other components include flavonoids (eg, kaempferol,
quercetin), gallic acid, saponins, a fixed oil, and a volatile
oil. The volatile oil contains small amounts of safrole and
eugenol and numerous other minor components, such as resin, wax,
and choline. Because witch hazel water is a steam distillate of
the extract, it does not contain any tannins.
The bark contains tannin,
partly amorphous and partly crystal, gallic acid, a physterol,
resin, fat and other bitter and odorous bodies.
Proanthocyanidins
from the bark of witch hazel
Part
used :
Leaves,Fruits,Stem.Bark
Reference:
Chemical Constitutents :
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