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Indian Journal of Geo-Marine Sciences (IJMS) >
IJMS Vol.39 [2010] >
IJMS Vol.39(2) [June 2010] >
| Title: | Isolation, optimization and characterization of selected Cyanophycean members |
| Authors: | Nagle, V L
Mhalsekar, N M
Jagtap, T G |
| Keywords: | Cyanobacteria
Isolation
Optimization
Characterization
Marine habitats |
| Issue Date: | Jun-2010 |
| Publisher: | CSIR |
| Abstract: | Ten spp. of Cyanobacteria (non-heterocytous)
were isolated from various marine habitats. Three bioactive potential forms,
were observed for their optimization of growth, subjecting them to various
concentrations of NaCl, pH, light and nutrients. Proteins, lipids, and
carbohydrates were also evaluated from some of the forms. Exponential growth
rates of (0.062 and 0.01 g day-1) were exihibited by Phormidium
tenue and S. cedrorum, respectively, in the first two weeks.
Wide range (0-100%) of salinity tolerance was noticed in Phormidium tenue,
S. cedrorum and S. pevalekii. Optimum growth and maximum
biomass were obtained in media with NaCl concentrations of 5-25%. All three
species exhibited maximum growth in media with pH 7.5, and responded
well with increasing concentrations of NO3-N. The quantum of nitrate
required for maximum growth varied with species. Synechococcus cedrorum
produced higher biomass in the artificial light, compared to the same in direct
sunlight, and diffused light. Spirulina major showed maximum (66.72%)
proteins, while Oscillatoria sp. was rich (28.82%) in carbohydrate
contents. Phormidium showed relatively higher (11.3%) lipid contents. |
| Page(s): | 212-218 |
| ISSN: | 0975-1033 (Online); 0379-5136 (Print) |
| Source: | IJMS Vol.39(2) [June 2010]
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