Environmental Engineering Reference
In-Depth Information
species possesses antiviral, anticancer, and hypocholesterolemic activi-
ties besides serving as a potent inhibitor of human leukemia K562 cells
and herpes simplex virus type 2 (HSV-2). Further, its extract has also been
reported to possess antibacterial properties. The values of inhibition zone
diameter (mm) for bacterial species,
S. epidermidis
,
S. aureus
,
S. haemo-
lyticus
,
P. vulgaris
,
and
S. sonnei
, were found to be 16, 17, 14, 15, and 16,
respectively. The values for fungal species,
C. krusei
,
C. albicans
,
A. niger
,
A. fumigatus
,
and
C. neoformans
, were 8, 7, 7, 6, and 9 mm, respectively
(Ramamurthy et al., 2012).
NOSTOC ELLIPSOSPORUM
RABENHORST
EX BORNET & FLAHAULT, 1888
Phylum: Cyanobacteria
Class: Cyanophyceae
Order: Nostocales
Family: Nostocaceae
Distribution: Europe
Habitat: Freshwater habitats
Description: This species forms spherical colonies in which the ilaments are
embedded in a gelatinous substance.
Compounds and activities: The bioactive compound cyanoviridin-N (101 amino
acid long, 11 kDa protein) isolated from this species has been reported to
be virucidal and inactivate the strains of human immunodeiciency virus
type 1 (HIV-1) (by interacting with mannose groups of envelope glyco-
proteins, gp 120, and blocking their interaction with target cell receptors),
HIV-2, HSV-6, measles virus, simian immunodeiciency virus (SIV), and
feline immunodeiciency virus (FIV) (Singh et al., 2005).
