Environmental Engineering Reference
In-Depth Information
OSCILLATORIA AMOENA
(KUTZING) GOMONT, 1892
Phylum: Cyanobacteria Class: Cyanophyceae
Order: Oscillatoriales Family: Oscillatoriaceae
Distribution: Australia, New Zealand, Paciic Islands, Asia
Habitat: Freshwater habitats
Description: Each ilament of this species consists of trichomes that are made
of rows of cells. This ilamentous species reproduces by fragmentation.
Compounds and activities: The bioactive compounds, viz., oleic acid and lin-
oleic acid, isolated from this species have antidiabetic properties. Further,
the extracts of this species possess antioxidant properties, besides serving
as food additives and industrial chemicals (Smith et al., 2008).
OSCILLATORIA CALCUTTENSIS
BISWAS, 1925
Phylum: Cyanobacteria
Class: Cyanophyceae
Order: Oscillatoriales
Family: Oscillatoriaceae
Distribution: India
Habitat: Freshwater habitats
Description: The thallus of this species is leathery brown and its trichomes
(2 × 14 µm) are straight and parallel. The end cells are conical and pointed.
Compounds and activities: The bioactive compounds isolated from this spe-
cies include palmitoleic acid, heptadecanoic acid, linoleic acid, and oleic
acid. Among them, palmitoleic acid is known to improve the parameters of
β cell formation and increase islet insulin content, as well as chronic and
glucose-stimulated insulin secretions.
LYNGBYA LIMNETICA
LEMMERMANN, 1898
Phylum: Cyanobacteria Class: Cyanophyceae
Order: Oscillatoriales Family: Oscillatoriaceae
Distribution: Europe, Southwest Asia, Australia, New Zealand
Habitat: Freshwater habitats
Description: This rock-mountain lake species is ilamentous, and the ilaments
are singly, occasionally intertwined, irregularly coiled, or straight. The
cells measure 8 µm in length and 2.5 µm width. The end cell is characteris-
tically rounded and not tapering.
Compounds and activities: The bioactive compounds isolated from this species
include oleic and linoleic acids. Of these, oleic acid is known to prevent high
