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A one-stage cultivation process for lipid- and carbohydrate-rich biomass of Scenedesmus obtusiusculus based on artificial and natural water sources.
- Source :
-
Bioresource Technology . Oct2016, Vol. 218, p498-504. 7p. - Publication Year :
- 2016
-
Abstract
- A one-stage cultivation process of the microalgae Scenedesmus obtusiusculus with medium based on natural water sources was developed to enhance lipids and carbohydrates. A medium based on artificial sea water, Baltic Sea water and river water with optimized nutrient concentrations compared to the standard BG-11 for nitrate (−75%), phosphate and iron (−90%) was used for cultivation. Although nitrate exhaustion over cultivation resulted in nitrate limitation, growth of the microalgae was not reduced. The lipid content increased from 6.0% to 19.9%, an increase in oleic and stearic acid was observed. The unsaponifiable matter of the lipid fraction was reduced from 19.5% to 11.4%. The carbohydrate yield rose from 45% to 50% and the protein content decreased from 32.4% to 15.9%. Using natural water sources with optimized nutrient concentrations could open the opportunity to modulate biomass composition and to reduce the cultivation costs. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SCENEDESMACEAE
*LIPIDS
*CARBOHYDRATES
*BIOMASS energy
*WATER supply
Subjects
Details
- Language :
- English
- ISSN :
- 09608524
- Volume :
- 218
- Database :
- Academic Search Index
- Journal :
- Bioresource Technology
- Publication Type :
- Academic Journal
- Accession number :
- 117475704
- Full Text :
- https://doi.org/10.1016/j.biortech.2016.06.109