Fatty Acid Synthesis by Indonesian Marine Diatom, Chaetoceros gracilis

Pratiwi, Alberta Rika and Syah, Dahrul and Hardjito, Linawati and Panggabean, Lily Maria Goretti and SUHARTONO, MAGGY THENAWIDJAJA (2009) Fatty Acid Synthesis by Indonesian Marine Diatom, Chaetoceros gracilis. Fatty Acid Synthesis by Indonesian Marine Diatom, Chaetoceros gracilis, 16 (4). pp. 151-156. ISSN 2086-4094

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Abstract

Since the primary storage nutrients in diatoms consist of lipid, they are potential for the industrial fatty acid production. High value fatty acids include arachidonic acid, eicosapentaenoic acid and docosahexaenoic acid. This study aimed to analyze fatty acid synthesis by Chaetoceros gracilis diatom during growth. There was a large increase in lipid yield from 4pg cell−1 mass of lipid per cell at the exponential phase to 283pg cell−1 at stationary phase. The lipid concentrations also increased significantly from the stationary phase to the death phase, but not significantly from the end exponential phase to the stationary phase. The relative percentage of saturated fatty acid (SAFA) of the total fatty acid was higher than that of monounsaturated fatty acid (MUFA) and polyunsaturated fatty acid (PUFA) at all of growth phase. The highest PUFA was found at stationary phase at the same time when SAFA was being the lowest. The majority of SAFA was palmitic acid (24.03–40.35%). MUFA contained significant proportion of oleic acid (19.6–20.9%). Oleic acid, linoleic acid and á-linolenic acid were found at every stage growth. These fatty acids are considered as precursor for production of long chain PUFA-Docosahexaenoic acid (DHA/22:6ù3) through series of desaturation and elongation step with all of desaturase enzyme (Ä8-D, Ä9-D, Ä12-D, Ä15-D, Ä17-D, Ä6-D, Ä5-D, and Ä4-D) and elongase enzyme (E).

Item Type:	Article
Subjects:	500 Science
Divisions:	Faculty of Agricultural Technology > Department of Food Technology
Depositing User:	Ms Rika Pratiwi
Date Deposited:	18 Mar 2021 07:01
Last Modified:	07 Dec 2022 07:29
URI:	http://repository.unika.ac.id/id/eprint/23884

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