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Title: Effect of salinity of medium on cellular fatty acid composition of marine alga Porphyridium cruentum (Rhodophyceae)
Authors: Lee, Y.-K. 
Tan, H.-M.
Low, C.-S.
Keywords: fatty acids
Porphyridium cruentum
Issue Date: Apr-1989
Citation: Lee, Y.-K.,Tan, H.-M.,Low, C.-S. (1989-04). Effect of salinity of medium on cellular fatty acid composition of marine alga Porphyridium cruentum (Rhodophyceae). Journal of Applied Phycology 1 (1) : 19-23. ScholarBank@NUS Repository.
Abstract: Porphyridium cruentum Näg. (clone 161) was found to grow best in medium containing between 0.45 M and 0.8 M NaCl. From studies done on growing cultures, the palmitic acid content of the cells decreased with increasing NaCl concentration of the medium. Conversely, when the culture was transferred from a 0.8 M NaCl medium to 0.2 M NaCl, the amount of palmitic acid in the Porphyridium cells increased with time of incubation and it contributed up to 64.5% of the total fatty acid content. There appears to be a negative correlation between the cellular content of palmitic acid and the growth lag. The oleic acid content varied only marginally with increasing NaCl concentration. The poly-unsaturated acid content (linolenic and arachidonic acids) decreased initially and then increased with NaCl concentration up to and beyond ca. 0.8 M NaCl respectively. At 1.5 M NaCl, the poly-unsaturated fatty acids amounted to 78.2% of the total fatty acids in the cell. For stationary phase P. cruentum cultures, a similar relationship existed between fatty acids and NaCl concentration. However, palmitic acid was accumulated up to three-fold more when compared to the exponential culture grown in low salinity. In addition stearic acid was also found in significant quantities. © 1989 Kluwer Academic Publishers.
Source Title: Journal of Applied Phycology
ISSN: 09218971
DOI: 10.1007/BF00003531
Appears in Collections:Staff Publications

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