Environmental Engineering Reference
In-Depth Information
APONOGETON UNDULATUS
ROXB.
Phylum: Magnoliophyta
Class: Liliopsida
Order: Alismatales
Family: Apogetanaceae
Common name: Undulate aponogeton
Distribution: Bangladesh, India, Sri Lanka, Burma, Thailand, Malaysia, Indonesia
Habitat: Still and slow-lowing shallow water bodies, looded rice ields
Description: The rhizome of this submerged and rooted species is ovoid and
measures 5 cm in length and 3 cm in breadth. The stem is single and erect,
and its leaves (10-15 cm long), which have undulating margins, are very
pale green. The lowers are white.
Compounds and activities: The crude extracts of this species showed anti-
oxidant (free radical scavenging) and thrombolytic activities, besides pos-
sessing broad-spectrum antibacterial activities against
Bacillus cereus
and
Escherichia coli
. In a DPPH free radical scavenging assay, the extract
exhibited potent antioxidant activity with an IC
50
value 2.43 ± 1.06 µg/ml,
while in ascorbic acid, the value was 2.14 ± 0.11 µg/ml. In thrombolytic
activity (using the
in vitro
clot lysis assay method), the crude methanol
extract was found to have signiicant (
p
< 0.001) thrombolytic activity at
a dose of 10 mg/ml with a minimum effect of 20.23 ± 1.56%. The highest
antibacterial effect was shown against
B. cereus
(zone of inhibition 12 ±
0.65 mm) followed by
E. coli
(zone of inhibition 10 ± 0.71 mm) (Chowdhury
et al., 2011).
