Environmental Engineering Reference
In-Depth Information
Compounds and activities: The bioactive compounds isolated from this species
include -α - dimorphecolic acid (9- hydroxy- IOE), 12 Z- octadecadienoic acid
(9-HODE), and coriolic acid, a 13-hydroxy-9Z,11E-octadecadienoic acid
(13-HODE). In agar plate tests, these unsaturated hydroxyl fatty acids
inhibit the growth of Gram-positive bacteria,
Bacillus subtilis
SBUG 14,
Micrococcus lavus
SBUG, and
Staphylococcus aureus
SBUG 11 and
ATCC 25923 (Mundt et al., 2003).
OSCILLATORIA HAMELII
FREMY, 1930
Phylum: Cyanobacteria
Class: Cyanophyceae
Order: Oscillatoriales
Family: Oscillatoriaceae
Distribution: Europe
Habitat: Freshwater habitats
Description: The trichome (8 × 5 µm) of this species is not attenuated toward
the ends and is slightly constricted. The granules are absent and the termi-
nal cells are rounded.
Compounds and activities: The diethyl ether extracts of this species have
both saturated and unsaturated fatty acids at 83 and 10%, respectively.
The other bioactive compounds present in this species include tetramine,
spermine, and piperazine derivatives. This species has shown antimicrobial
activities against
Escherichia coli
,
Bacillus subtilis
,
Staphylococcus albus
,
Streptococcus faecalis
, and
Candida albicans,
and the values of inhibition
zone diameter (mm) were found to be 15, 14, 14, 12, and 12, respectively
(Shanab, 2007).
N
NH
2
H
H
2
N
tetramine
N
NH
2
H
2
N
H
spermine
