Growth and biochemical composition with emphasis on the fatty acids ofTetraselmissp.

✍ Scribed by E. Molina; M. E. Martínez; S. Sánchez; F. García; A. Contreras

• Book ID: 104650932
• Publisher: Springer
• Year: 1991
• Tongue: English
• Weight: 452 KB
• Volume: 36
• Category: Article
• ISSN: 1432-0614
• DOI: 10.1007/bf00164692

✦ Synopsis

The influence of temperature (15-32 ° C) and the ratio of nitrogen to phosphorus (N/P) in the culture medium (0.5-80) on the growth kinetics and protein, chlorophyll, lipid and fatty acid content of the marine microalga Tetraselrnis sp. have been studied. Below an N / P of 20, growth was determined by N limitation and above 20 by P limitation. Protein increased with a rise in N content at any test temperature. The chlorophyll content increased with temperature, with maximum values at 25 ° C. The lipid content decreased with increasing N / P ratio above 20 ° C. The polyunsaturated fatty acid content tends to be inversely proportional to the growth rate within the N / P range 20-80. The quotient of the rt3 and n6 polyunsaturated-fatty-acid fractions, an indicator of the nutritive value of microalgae, was found to be within the range 2-3. These values were obtained either between 25 and 28°C independent of the N / P ratio used or at 20°C for N / P ratios higher than 40.0.