scholarly journals Increased lipids production of Nannochloropsis oculata and Chlorella vulgaris for biodiesel synthesis through the optimization of growth medium composition arrangement by using bicarbonate addition

2018 ◽  
Vol 154 ◽  
pp. 01009
Author(s):  
Dianursanti ◽  
Zenitha Lintang Agustin ◽  
Dwini Normayulisa Putri
Keyword(s):  
Growth Medium ◽  
Chlorella Vulgaris ◽  
Inorganic Carbon ◽  
Pilot Scale ◽  
Nannochloropsis Oculata ◽  
Medium Composition ◽  
Biodiesel Synthesis ◽  
Key Factor ◽  
Inorganic Carbon Source ◽  
Lipids Production

Chlorella vulgaris and Nannochloropsis oculata are a highly potential microalgae to be used in pilot-scale of biodiesel synthesis. The essential content from these microalgae is the fatty acid of lipid which is the main target for the feed and biodiesel industries. One of the key factor in improving lipid microalgae are the arrangemment of nutrients in the growth medium. Research on the regulation of nutrients using bicarbonate (HCO3-) as an additional inorganic carbon source has been done by many studies, but the yield of lipids obtained has not been much. The aim of the study was to improve the lipid yield of Chlorella vulgaris and Nannochloropsis oculata. Variation of [HCO3-] which added to Walne medium were 25 ppm and 75 ppm, while the Walne medium without the addition of bicarbonate acts as control. The results showed that [HCO3-] 75 ppm could increase Chlorella vulgaris biomass by 0.9162 g/l with 17.0% wt, while Nannochloropsis oculata produced the greatest lipid content in [HCO3-] 25 ppm of 20.3% wt and the largest biomass on [HCO3-] 75 ppm of 1.7233 g/l.

scholarly journals Metabolomics and Biological activities of Chlorella vulgaris grown under modified growth medium (BG11) composition

2020 ◽  
Vol 19 (1) ◽  
pp. 91-123
Author(s):  
Eman A. El-fayoumy ◽  
◽  
Sanaa M. M. Shanab ◽  
Emad A. Shalaby ◽  
◽  
...  
Keyword(s):  
Growth Medium ◽  
Chlorella Vulgaris ◽  
Biological Activities

scholarly journals Influence of growth medium composition on synthesis of bioactive compounds and antioxidant properties of selected strains of Arthrospira cyanobacteria

2012 ◽  
Vol 30 (No. 3) ◽  
pp. 258-267 ◽  
Author(s):  
T. Tarko ◽  
A. Duda-Chodak ◽  
M. Kobus
Keyword(s):  
Growth Medium ◽  
Bioactive Compounds ◽  
Antioxidant Properties ◽  
Beta Carotene ◽  
Medium Composition ◽  
The Other ◽  
Qualitative Composition ◽  
Efficient Synthesis ◽  
Selection Of ◽  
Carotene Synthesis

We studied how the selection of the growth medium influences the antioxidant properties and synthesis of bioactive compounds (β-carotene, C-phycocyanin, allophycocyanin, and phycoerythrin) in six selected species of cyanobacteria of Arthrospira genus. For this purpose, cyanobacteria cultures were cultivated on a typical Zarrouk medium and on a cheaper substitute – RM6 medium. Significant differences were observed in the efficiency of synthesis of the studied compounds depending on the strain of cyanobacteria. The quantitative and qualitative composition of Zarrouk medium was more beneficial for β-carotene synthesis in the cells of all strains of cyanobacteria studied. This medium also allowed for the antioxidant potential of the studied strains to be increased. On the other hand, the RM6 medium, deprived of some mineral ingredients, enabled more efficient synthesis of phycobiliproteins in all studied strains except A. platensis SAG 85.79.  

Pilot-scale production of lutein using Chlorella vulgaris

2019 ◽  
Vol 44 ◽  
pp. 101707 ◽  
Author(s):  
Dale D. McClure ◽  
Jonathan K. Nightingale ◽  
Audrey Luiz ◽  
Sachin Black ◽  
Jingyuan Zhu ◽  
...  
Keyword(s):  
Chlorella Vulgaris ◽  
Pilot Scale ◽  
Scale Production ◽  
Pilot Scale Production

scholarly journals Effect of bicarbonate on growth of the oleaginous microalga Botryococcus braunii

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Giovanna Salbitani ◽  
Carmela M.A. Barone ◽  
Simona Carfagna
Keyword(s):  
Inorganic Carbon ◽  
Algal Growth ◽  
Botryococcus Braunii ◽  
Final Concentration ◽  
Time Intervals ◽  
Experimental Conditions ◽  
Co2 Gas ◽  
Inorganic Carbon Source ◽  
Doubling Times

The effect of bicarbonate, produced by the enzymatic hydration of CO2 from postcombustion fumes, was investigated on Botryococcus braunii growth. The NaHCO3, supplied to cultures in the role of inorganic carbon source is proposed as a more eco-sustainable alternative to gaseous CO2. The salt was provided to the cultures at the final concentration of 0.5-1.5-2.5 g L- 1. The growth rate was considered for specific time intervals (T0-T5, T5-T10 and T0- T10) showing values significantly higher in the culture supplemented with 2.5 g L-1 bicarbonate. The doubling times were also considered in all experimental cultures showing a faster doubling for the period T0÷T5. The increase in pH drives the increase in growth in the experimental conditions in which the salt was added. The results suggest that bicarbonate is able to promote the algal growth, therefore it can be considered a valid alternative to CO2 gas.

Sign in / Sign up

Export Citation Format

Share Document