Fatty acid and pigment production from spirulina
1988
Marasri Reungjitchachawaly | Sopit Vetayasuporn | Morakot Tanticharoen (King Mongkut's Inst. of Technology Thonburi, Bangkok (Thailand). Dept. of Biotechnology, School of Energy and Materials)
Optimum conditions for fatty acids and pigments production in Spirulina BP (strain isolated from Tapioca starch factory in Ban Pong, Rajchaburi) were determined. Various dilution rates were determined in semicontinuous cultivation at room temperature (29-30 deg. celsius), under fluorescence light at the intensity of about 2500 luxes. At higher dilution rate cell concentration per volume of medium decreased but did not affect the total fatty acid content (% dry weight basis). At the dilution rate greater than 0.4 per dry, the composition of fatty acids was altered. Palmitoleic acid (C16:1) increased more than 50 % and gamma-linolenic acid (C18:3) decreased more than 10 %. Chlorophyll a and phycocyanin increased approximately 25 and 35 %, respectively. Concentration of sodium chloride less than 3.0 % did not affect growth of cells but affected the fatty acids content. Increasing the salinity of the medium up to 1.5 and 3.0 % (W/V) NaCl at dilution rate 0.25 per day resulted in the decrease in fatty acid and gamma-linolenic acid 20 and 35 %, respectively, Chlorophyll a and phycocyanin content in the presence of 3.0 % NaCl decreased 33 and 13 %, respectively.
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