INHIBITORY EFFECT OF OXYGEN ACCUMULATION ON THE GROWTH OF SPIRULINA-PLATENSIS

Citation
Fj. Marquez et al., INHIBITORY EFFECT OF OXYGEN ACCUMULATION ON THE GROWTH OF SPIRULINA-PLATENSIS, Biotechnology letters, 17(2), 1995, pp. 225-228
Citations number
12
Categorie Soggetti
Biothechnology & Applied Migrobiology
Journal title
ISSN journal
01415492
Volume
17
Issue
2
Year of publication
1995
Pages
225 - 228
Database
ISI
SICI code
0141-5492(1995)17:2<225:IEOOAO>2.0.ZU;2-P
Abstract
The growth of Spirulina platensis was studied in a light-limited cultu re under various dissolved oxygen (DO) concentrations. At high DO conc entration, e.g. at 1.25 mM DO, the growth rate was decreased up to 36 % compared with that of 0.063 mM DO. The retarded growth rate at high DO concentrations seemed to be coupled with the degeneration of photos ynthetic activity in terms of O-2 evolution. Under higher DO concentra tions, superoxide dismutase and ascorbate peroxidase activities tended to increase, Chile the contents of photosynthetic pigment, such phyco cyanin, carotenoid and chlorophyll-a decreased distinctly,