Production of lipids in 10 strains of Chlorella and Parachlorella, and enhanced lipid productivity in Chlorella vulgaris |
| |
Authors: | P?ibyl Pavel Cepák Vladislav Zachleder Vilém |
| |
Institution: | (1) Algological Centre and Centre for Bioindication and Revitalization, Institute of Botany, v.v.i., Academy of Sciences of the Czech Republic, Dukelsk? 135, Třeboň, 379 82, Czech Republic;(2) Laboratory of the Cell Cycles of Algae, Institute of Microbiology, Academy of Sciences of the Czech Republic, Opatovick? ml?n, Třeboň, 379 81, Czech Republic |
| |
Abstract: | We tested 10 different Chlorella and Parachlorella strains under lipid induction growth conditions in autotrophic laboratory cultures. Between tested strains, substantial differences
in both biomass and lipid productivity as well as in the final content of lipids were found. The most productive strain (Chlorella vulgaris CCALA 256) was subsequently studied in detail. The availability of nitrates and/or phosphates strongly influenced growth
and accumulation of lipids in cells by affecting cell division. Nutrient limitation substantially enhanced lipid productivity
up to a maximal value of 1.5 g l−1 day−1. We also demonstrated the production of lipids through large-scale cultivation of C. vulgaris in a thin layer photobioreactor, even under suboptimal conditions. After 8 days of cultivation, maximal lipid productivity
was 0.33 g l−1 day−1, biomass density was 5.7 g l−1 dry weight and total lipid content was more than 30% dry weight. C. vulgaris lipids comprise fatty acids with a relatively high degree of saturation compared with canola oil offering a possible alternative
to the use of higher plant oils. |
| |
Keywords: | |
本文献已被 PubMed SpringerLink 等数据库收录! |
|