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- Title
Effects of Nitrogen and Phosphorus on the Growth, Total Fatty Acids and Arachidonic Acid Production of Parietochloris incisa.
- Authors
LUO Meng-liu; SANG Min; ZHANG Cheng-wu; LI Ai-fen
- Abstract
The green freshwater microalga Parietochloris incisa is known as the richest plant source of AA. The effects of nitrogen and phosphorus concentrations on the growth, total lipids(TL) and arachidonic acid (AA) content in P. incisa were studied. The results showed that nitrogen concentrations has no obvious influence on the growth of P. incisa and the final biomass stable at 2.1 g ⋅ L-1 under different nitrogen concentrations when phosphorus concentration fixed. The TL reached maximum to 33.37% of dry weight, and the proportion of AA comprising 36.63% of total fatty acids (TFA) and 11.56% of dry weight under low nitrogen concentration. When nitrogen concentration is fixed, phosphorus concentration has significant influence on the growth of P. incisa. The final biomass ranged from 0.90 to 2.07 g ⋅ L-1. TL achieved about 28%, when the phosphorus concentrations increased from 8 to 20 mg ⋅ L-1. It is demonstrated by the statistical analysis that the TL contents negatively correlated to nitrogen and phosphorus concentration.
- Subjects
NITROGEN; PHOSPHORUS; MICROALGAE; FATTY acids; ARACHIDONIC acid; PLANTS
- Publication
Natural Product Research & Development, 2010, Vol 22, Issue 3, p378
- ISSN
1001-6880
- Publication type
Article