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https://hdl.handle.net/2440/61105
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Type: | Journal article |
Title: | Heterotrophic growth and nutritional aspects of the diatom Cyclotella cryptica (Bacillariophyceae): Effect of some environmental factors |
Author: | Pahl, S. Lewis, D. Chen, F. King, K. |
Citation: | Journal of Bioscience and Bioengineering, 2010; 109(3):235-239 |
Publisher: | Soc Bioscience Bioengineering Japan |
Issue Date: | 2010 |
ISSN: | 1389-1723 1347-4421 |
Statement of Responsibility: | Stephen L. Pahl, David M. Lewis, Feng Chen and Keith D. King |
Abstract: | To investigate the nutritional value of the diatom Cyclotella cryptica (Reimann, Lewin, and Guillard) as an alternative feed for use in the aquaculture industry, the heterotrophic growth characteristics and resultant fatty acid profile of the microalga were studied when cultivated under a variety of controlled salinity and temperature conditions. In addition, the effects of pH on the growth characteristics were also studied. The maximum specific growth rate was affected by initial pH and cultivation temperature, but not by salinity. The optimal pH and temperature ranges for growth were 7.2 to 8.1 and 22.5 to 25.0 degrees C, respectively. Lipid accumulation and the fatty acid composition were also affected by cultivation temperature and salinity. The optimal temperature range and salinity level for lipid accumulation were 18.0 to 25.0 degrees C and 11.2 psu, respectively. In all cases the fatty acid distribution was similar, with the most abundant fatty acids being palmitic acid (16:0), palmitoleic acid (16:1 n-7), stearidonic acid (18:4 n-3, SDA), eicosapentaenoic acid (20:5 n-3, EPA), and decosahexaenoic acid (22:6 n-3, DHA). |
Keywords: | Cyclotella cryptica Heterotrophic Salinity Temperature pH PUFAs |
Rights: | Copyright © 2009 Published by Elsevier B.V. |
DOI: | 10.1016/j.jbiosc.2009.08.480 |
Published version: | http://dx.doi.org/10.1016/j.jbiosc.2009.08.480 |
Appears in Collections: | Aurora harvest 5 Chemical Engineering publications Environment Institute publications |
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