Influence of carbon-dioxide on the growth of Spirulina sp. (MCRC-A0003) isolated from Muttukadu backwaters, South India
| Autor: | R. Ranjith Kumar, V. Shashirekha, Shekhar P. Seshadri, M. Sivakumar |
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| Rok vydání: | 2013 |
| Předmět: |
Spirulina (genus)
Spirulina sp Physiology Photobioreactor Biomass Primary metabolite India General Medicine Carbohydrate Biology Carbon Dioxide biology.organism_classification Applied Microbiology and Biotechnology chemistry.chemical_compound Photobioreactors Productivity (ecology) chemistry Botany Carbon dioxide Spirulina Food science Basal Metabolism Water Microbiology Biotechnology |
| Zdroj: | World journal of microbiologybiotechnology. 30(10) |
| ISSN: | 1573-0972 |
| Popis: | Growth of Spirulina sp. (MCRC-A0003), a cyanobacterium, was evaluated under different concentrations of carbon-dioxide (CO2) (4-50 %) in a closed glass photobioreactor. Although significant CO2 utilization by the cyanobacterial strain was observed up to 50 % concentration, complete utilization was observed only at 4, 10 and 20 % concentrations on 3rd, 6th and 8th day respectively. However, considerable reduction was witnessed in reactors containing 30-50 % CO2 only between 6th and 9th day. A corresponding increase in the biomass and primary metabolites like chlorophyll-a, carbohydrate and protein were observed. Biomass productivity of Spirulina in reactors sparged with 4, 10 and 20 % CO2 were 13.7, 43 and 44 % more than that in control reactor without CO2. While CO2 increased the levels of primary metabolites in the cyanobacterial cells, it was quite prominent in 10 % CO2 concentration with the chlorophyll-a, carbohydrate and protein contents were 64, 183 and 626 mg g(-1) respectively. While 10 and 6.6 % increase were noticed in chlorophyll-a and protein, 17 % increase in carbohydrate levels was observed in Spirulina cells, which could be attributed to the conversion of CO2 to carbohydrate by the cyanobacterium. |
| Databáze: | OpenAIRE |
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