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Production of biomass and lipids by the oleaginous microalgae Monoraphidium sp. QLY-1 through heterotrophic cultivation and photo-chemical modulator induction.
- Source :
-
Bioresource Technology . Jul2016, Vol. 211, p669-676. 8p. - Publication Year :
- 2016
-
Abstract
- A two-step strategy comprising heterotrophic cultivation and photo-chemical modulator induction was developed to enhance biomass and lipid accumulation in the oleaginous Monoraphidium sp. QLY-1, which was isolated from Qilu Lake in Yunnan Plateau. The algae were first cultivated heterotrophically to achieve high biomass concentration (5.54 g L −1 ) with a lipid content of 22.47%. The cultivated algae were diluted, transferred to light environment, and treated with different chemical elicitors. Results showed that the lipid content increased to 36.68% after 3-day of photoinduction. The lipid content was further enhanced by 1.21, 1.32, and 1.29 folds in algal cells treated with nitrogen deficiency, 20 g L −1 NaCl, and 5 mM glycine betaine, respectively. The maximum lipid content (48.54%) and lipid productivity (121.27 mg L −1 d −1 ) were obtained in treatments with 20 g L −1 NaCl and 5 mM GB, respectively. This study proposes a strategy to efficiently produce lipids by using microalgae. [ABSTRACT FROM AUTHOR]
- Subjects :
- *BIOMASS production
*MICROALGAE
*LIPIDS
*NITROGEN deficiency
*BETAINE
Subjects
Details
- Language :
- English
- ISSN :
- 09608524
- Volume :
- 211
- Database :
- Academic Search Index
- Journal :
- Bioresource Technology
- Publication Type :
- Academic Journal
- Accession number :
- 114804375
- Full Text :
- https://doi.org/10.1016/j.biortech.2016.03.160