Light intensity and nitrogen effectively control exopolysaccharide production by the green microalga Botryococcus braunii (Trebouxiophyceae)

0493067 - BÚ 2019 RIV BG eng J - Journal Article
Cepák, Vladislav - Přibyl, Pavel
Light intensity and nitrogen effectively control exopolysaccharide production by the green microalga Botryococcus braunii (Trebouxiophyceae).
Genetics and Plant Physiology. Roč. 8, 1-2 (2018), s. 24-37. ISSN 1314-6394
R&D Projects: GA TA ČR TE01020080; GA TA ČR TA03011027
Institutional support: RVO:67985939
Keywords : Botryococcus braunii * exopolysaccharides * nitrate
OECD category: Plant sciences, botany

The production of exopolysaccharides (EPS) in the green microalga Botryococcus braunii was strongly dependent not only on the nitrogen concentration in the cultivation medium, but also on the intensity of light. At higher light intensities (650-950 μmol m-2 s-1), EPS production was dependent on the nitrogen concentration in the cultivation medium. The optimal conditions of light and nitrogen for EPS production were 950 μmol m-2 s-1 and 6 mM nitrate, respectively, under which EPS approached 2 mg mL-1. These conditions were accompanied by significant ultrastructural changes.
Permanent Link: http://hdl.handle.net/11104/0287332