Details

Autor(en) / Beteiligte

• Renaud, S. M.
• Parry, D. L.
• Thinh, Luong-Van
• Kuo, C.
• Padovan, A.
• Sammy, N.

Titel

Effect of light intensity on the proximate biochemical and fatty acid composition of Isochrysis sp. and Nannochloropsis oculata for use in tropical aquaculture

Ist Teil von

• Journal of applied phycology, 1991-03, Vol.3 (1), p.43-53

Erscheinungsjahr

1991

Quelle

SpringerLINK Contemporary (Konsortium Baden-Württemberg)

Beschreibungen/Notizen

• The total protein, carbohydrate, lipid and ash compositions, and fatty acid contents of two species of marine microalgae, the eustigmatophyte Nannochloropsis oculata (formerly "Chlorella sp., Japan") and the chrysophyte Isochrysis sp. used in tropical Australian mariculture, were studied. The micro-algae were grown under a range of culture conditions (4 l and 60 l laboratory culture, 300 l bag culture, and 8000 l outdoor culture) and four light regimes (100 to 107 mu E/m super(2)/s, 240 to 390 mu E/m super(2)/s, 340 to 620 mu E/m super(2)/s, and 1100 to 1200 mu E/m super(2)/s respectively) to determine the effect of light intensity on the chemical composition of large scale outdoor cultures. Isochrysis) sp. showed significant concentrations of the essential polyunsaturated fatty acid 22:6(n-3) (docosahexaenoic acid) from 5.3 to 10.3% of total fatty acid, and 20:5(n-3) (eicosapentaenoic acid) ranged from 0.6 to 4.1%. In contrast, N. oculata had high concentrations of 20:5(n-3) (17.8 to 39.9%) and only traces of 22:6(n-3).