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Effects on Growth patterns of Marine Microalgae and Macroalgae in Different Media to Increase the Omega-3 Fatty Acid Production

Vishwanatha H N, Shivakumar R, Samita Maitra


Eicosa-Pentaenoic Acid, Docosa-Hexaenoic Acid and Alpha- Linolenic Acid are used as dietary supplement. In the present investigation Pavlova lutheri (marine microalgae) and Azolla filiculoides (fresh water macroalgae) are used to study on different stress conditions for the accumulation of lipids using microalgae and macroalgae. The effect of various parameters such as light intensity, natural sea water, artificial sea water and nutrient deprived in HESNW (High Enrichment Salt Nutrient Water) media are studied. Under sodium deprived condition, Pavlova lutheri showed a significant decrease in growth rate and increase in lipid accumulation, when compared to the growth in normal HESNW media. Azolla filiculoides also showed a significant decrease in growth rate and increase in lipid accumulation for magnesium andpotassium deprived media. High lipid accumulation was found in potassium stress compared to magnesium stress conditions.Overall results found that Azolla filiculoidesalgae showed a better lipid production at optimum conditions.

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