Environmental Engineering Reference
In-Depth Information
Compounds and activities: The aqueous extract of this species has been reported
to possess antibacterial and antiviral (inluenza A) activities. The bioactive
compounds of this species include aeruginosin 98 A and B (1) (trypsin inhib-
itors), aeruginosin 298 A (trypsin and thrombin inhibitors), micropeptin 90
A and B (plasmin and trypsin inhibitors), micropeptin 478 A and B (plasmin,
leucin, and aminopeptidase inhibitors), microginin (angiotensin-converting
enzyme inhibitor), microginin 299 A and B (leucin and aminopeptidase
inhibitors), microviridins B and C (elastase and serine protease inhibitors),
microcystilide A (cell differentiation-promoting peptide), kawaguchipeptin
B (bactericide), anabaenopeptin A (C
44
H
57
N
7
O
10
) (protease inhibitor), and
(S)-(+)-1-cyclohexylethylamine (booster of mental functions). A maxi-
mum antibacterial activity of 91.9% was recorded with the last compound.
( Al- Wathanani et al.,
2012). A total of 12 hepatotoxins have also been iso-
lated from this species (Namikoshi et al., 1992).
H
3
C
NH
2
(s)-(+)-1-cyclohexylethylamine
MICROCYSTIS FLOS-AQUAE
(WITTROCK) KIRCHNER, 1900
Phylum: Cyanobacteria Class: Cyanophyceae
Order: Chroococcales Family: Microcystaceae
Distribution: Europe, North America, South America, Southwest Asia, Asia,
Southeast Asia, Australia, New Zealand
Habitat: Freshwater habitats
Description: This is a gas-vacuolated cyanobacterium that normally blooms
in eutrophic lakes. In the free-loating colonies, the spherical cells with gas
vesicles are arranged in mucilage.
Compounds and activities: A variant of known peptides isolated from the
methanol/sonication extract of this species showed antibacterial activities
