publication . Article . Other literature type . 2011

Effect of nitrogen, salt, and iron content in the growth medium and light intensity on lipid production by microalgae isolated from freshwater sources in Thailand

Yeesang, Chittra; Cheirsilp, Benjamas;
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  • Published: 01 Feb 2011 Journal: Bioresource Technology, volume 102, pages 3,034-3,040 (issn: 0960-8524, Copyright policy)
  • Publisher: Elsevier BV
Abstract
Abstract Four green microalgae (TRG, KB, SK, and PSU) identified as Botryococcus spp. by morphological criteria were isolated from lakes and freshwater ponds in southern Thailand. In nitrogen-rich medium the strains achieved a lipid content of 25.8%, 17.8%, 15.8% and 5.7%, respectively. A combination of nitrogen deficiency, moderately high light intensity (82.5 μE m−2 s−1) and high level of iron (0.74 mM) improved lipid accumulation in TRG, KB, SK, and PSU strains up to 35.9%, 30.2%, 28.4% and 14.7%, respectively. The lipid contents and plant oil-like fatty acid composition of the microalgae suggested their potential as biodiesel feedstock.
Subjects
free text keywords: Food science, Composition (visual arts), Microorganism, Aquatic plant, Botryococcus, biology.organism_classification, biology, Botany, Nitrogen deficiency, Biochemistry, Salinity, Chemistry, Growth medium, chemistry.chemical_compound, Nitrogen, chemistry.chemical_element
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