Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7079112 | Bioresource Technology | 2014 | 9 Pages |
Abstract
Nitzschia sp. (Bacillariophyceae) was grown under temperature and photoperiods mimicking those, typical during summer, spring/fall and winter conditions in the southern United States, and using five silicate (Si) concentrations. In general, higher Si concentrations resulted in higher growth rates in summer and spring/fall conditions and lower organic content. Si-deficient Nitzschia sp. had higher levels of neutral lipid compared to those growing in Si replete media. Under summer conditions, the proportion of saturated fatty acids (SFA) and monounsaturated fatty acids (MUFA) was relatively stable compared with spring/fall and winter conditions, and the proportion of polyunsaturated fatty acids (PUFA) was low. In the winter condition, SFA and MUFA showed a gradient of decreasing abundance while PUFA gradients increased with increasing Si concentrations in the medium. Cumulative productivity (optimization of growth and lipid content) would be best in the spring/fall but less so in the other conditions for this strain of Nitzschia sp.
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Physical Sciences and Engineering
Chemical Engineering
Process Chemistry and Technology
Authors
Yuelu Jiang, Katherine Starks Laverty, Jola Brown, Marcella Nunez, Lou Brown, Jennifer Chagoya, Mark Burow, Antonietta Quigg,