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Manipulating nutrient composition of microalgal growth media to improve biomass yield and lipid content of Micractinium pusillum

Title
Manipulating nutrient composition of microalgal growth media to improve biomass yield and lipid content of Micractinium pusillum
Author
전병훈
Keywords
Micractinium pusillum; biomass; lipid production; media composition; fatty acids; trace metals
Issue Date
2012-11
Publisher
Academic Journals
Citation
African Journal of Biotechnology Vol. 11,NO.96, p.16270-16276
Abstract
Biodiesel production from microalgae depends on the algal biomass and lipid content. Both biomass production and lipid accumulation are limited by several factors in which nutrients play a key role. We investigated the influences of micronutrients on biomass, and lipid content of Micractinium pusillum GU732425 cultivated in bold basal media (BBM). The average dry biomass of microalgal strain in control medium reached 0.34 ± 0.01 g /L, while doubling (2X) the levels of Mn and Cu concentration increased the dry biomass to 0.38 ± 0.01 and 0.37 ± 0.02 g /L, respectively. M. pusillum cultivated in control medium had a biomass of 0.82 ± 0.05 g/L and a lipid productivity of 0.33 ± 0.02 g/L after 17 day cultivation. The alga cultivated in BBM with 4X Mn or 4X Cu produced more biomass (1.25 ± 0.01 or 1.28 ± 0.04 g dw/L) and lipid productivity (0.45±0.04 or 0.47±0.05 g/L), respectively. M. pusillum cultivated in different growth media had fatty acid compositions mainly comprising linoleic (49-54%), palmitic (24-29%), linolenic (16-22%), and oleic acids (2-5%). These results can be used to maximize the production of microalgal biomass and lipids in optimally designed photobioreactors.
URI
https://www.ajol.info/index.php/ajb/article/view/129811/119374http://hdl.handle.net/20.500.11754/42956
ISSN
1684?5315
DOI
10.5897/AJB12.2628
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > EARTH RESOURCES AND ENVIRONMENTAL ENGINEERING(자원환경공학과) > Articles
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