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Uses in traditional
medicine and reported
activities. D. kaki
folium is well known
in Korean traditional
medicine for alleviating
coughs and enhancing
blood circulation.
It has been used for
treatment of diabetes
mellitus, asthma and the
common
cold w1x. L. japonica is
known to possess a
hypotensive effect w2x
and U. pinnatifida
to prevent coagulation
of human blood and to
have an antitumor effect
w3x.
Previously isolated
classes of constituents.
D. kaki: catechins w1x;
L. japonica:
polysaccharides; U.
pinnatifida:
polysaccharides w4x.
Tested material.
Methanol extracts of D.
kaki (yield: 20.0%), L.
japonica (24.1%)
and U. pinnatifida
(22.0%), obtained by
48-h maceration at room
temperature w5x.
Studied activity.
Scavenging activity
against DPPH
(1,1-diphenyl-2-picrylhydrazyl)
free radicals w5,6x.
Conclusions. Among the
examined plants, D. kaki
was shown to possess the
most
potent free radical
scavenging activity.
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