کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2085972 1545495 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fatty Acid Synthesis by Indonesian Marine Diatom, Chaetoceros gracilis
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
Fatty Acid Synthesis by Indonesian Marine Diatom, Chaetoceros gracilis
چکیده انگلیسی

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).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: HAYATI Journal of Biosciences - Volume 16, Issue 4, December 2009, Pages 151–156
نویسندگان
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