Evaluation of indigenous fresh water microalga Scenedesmus obtusus for feed and fuel applications: Effect of Carbon dioxide, light and nutrient sources on growth and biochemical characteristics.

Sarat Chandra, T. and Deepak, R. S. and Maneesh Kumar, M. and Mukherji, S. and Chauhan, V. S. and Sarada, R. and Mudliar, S. N. (2016) Evaluation of indigenous fresh water microalga Scenedesmus obtusus for feed and fuel applications: Effect of Carbon dioxide, light and nutrient sources on growth and biochemical characteristics. Bioresource Technology, 207. pp. 430-439.

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Abstract

Scenedesmus obtusus, a freshwater microalga, was evaluated for its growth and biochemical characteristics under various culture conditions. S. obtusus was tolerant at all tested CO2 concentrations up to 20%. Among the different nitrogen sources, urea showed enhanced biomass productivities up to 2-fold compared to control, where the nitrogen source was sodium nitrate. Light intensity and photoperiod had a significant effect on growth rate and biomass productivity. The growth rate was observed maximum under continuous light exposure at the light intensities, 30μmolm(-2)sec(-1) and 60μmolm(-2)sec(-1) The species was able to tolerate the salinity levels up to 25mM NaCl, where, the increase in the concentration of NaCl suppressed the growth. Ammonium acetate and glycine showed better growth rate and biomass productivity indicating mixotrophic ability of S. obtusus. Supplementation of acetate and bicarbonate significantly enhanced the biomass productivity. Biodiesel properties of S. obtusus cultivated at various culture conditions were estimated.

Item Type:	Article
Uncontrolled Keywords:	Biodiesel; CO(2) concentration; Nitrogen source; Photoperiod; Scenedesmus obtusus
Subjects:	500 Natural Sciences and Mathematics > 08 Botanical sciences > 01 Botany > 01 Algae
Divisions:	Plant Cell Biotechnology
Depositing User:	Food Sci. & Technol. Information Services
Date Deposited:	19 Jan 2018 08:35
Last Modified:	19 Jan 2018 08:35
URI:	http://ir.cftri.res.in/id/eprint/13342

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