Environmental Engineering Reference
In-Depth Information
OH
HO
O
OR
1
O
R
4
OH
O
O
R
5
1
"
O
R
3
1
"
O
OH
HO
OR
2
HO
HO
R
1
= Me, R
2
= Ac, R
3
= OH, R
4
= H, R
5
= CH
2
OH
7-O-β-D-glucopyranosyl-dihydroquercetin-3-O-α-D-glucopyranoside
POLYGONUM MINUS
HUDSON, 1762
Phylum: Magnoliophyta
Class: Magnolopsida
Order: Polygonales
Family: Polygonaceae
Common name: Knotweed, knotgrass
Distribution: Europe, Scandinavia, Spain, temperate Asia
Habitat: Wet marshy places and beside lakes and ponds
Description: This annual herb grows to a maximum height of 0.3 m. The stem
is very slender, stout, or glabrous. Leaves (12 cm long) are shortly petiolate,
lanceolated, or linear. Inlorescence (6 cm long) is with six lowers. Flowers
are hermaphroditic.
Compounds and activities: The ether extracts of this species contain a lavone,
viz., 6,7-methylenedioxy-5,3′,4′,5′-tetramethoxylavone, and a methyl lavo-
nol, viz., 6,7,4′5′-dimethylene dioxy-3,5,3′-trimethoxy lavone. The cytotox-
icity of this species against HeLa cells has been demonstrated with a CD
50
value of 0.1 mg/ml (Qadar et al., 2012). The extracts of this plant have also
shown antioxidant, antimicrobial, and antiulcer activities.
