Chlorella vulgaris cultivation in airlift photobioreactor with transparent draft tube: effect of hydrodynamics, light and carbon dioxide on biochemical profile particularly ω-6/ω-3 fatty acid ratio.
作者： C. K. Madhubalaji , T Sarat Chandra , V. S. Chauhan , R. Sarada , Sandeep N. Mudliar
DOI: 10.1007/S13197-019-04118-5
关键词: Nitrate 、 Photobioreactor 、 Chlorophyll 、 Light intensity 、 Carbon dioxide 、 Food science 、 Chlorella vulgaris 、 Bacterial growth 、 Fatty acid 、 Chemistry
摘要: Chlorella vulgaris is used for food and feed applications due to its nutraceutical, antioxidant anticancer properties. An airlift photobioreactor comprising transparent draft tube was C. cultivation. The effect of reactor parameters like hydrodynamics (0.3-1.5 vvm), light intensity (85-400 μmol m-2 s-1), photoperiod (12-24 h) gas-phase carbon dioxide (CO2) concentration (5-15% v/v) were evaluated on microalgae associated bacterial growth, biochemical profile; with special emphasis ω-3, ω-6 fatty acids, vitamin B12. optimal growth without CO2 supplementation observed at 1.2 vvm, which higher algal productivity, chlorophyll, B12 content, load along 72% nitrate removal. (400 s-1) (24:0) increased biomass productivity ω-3 acid content (in lipid) up 2-3 fold. elevated levels (15% enhanced EPA 7% 171 mg L-1 day-1. However, the increase in lowered (up 30%) (2-3 log). Also, all cultivation conditions favoured desirable ω-6/ω-3 ratio(in range 1-2).
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