Cellular growth and fatty acid content of Arctic chlamydomonadalean

Jung, Woongsic; Kim, Eun Jae; Lim, Suyoun; Sim, Hyunji; Han, Se Jong; Kim, Sanghee; Kang, Sung-Ho; Choi, Han-Gu

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자료유형: 학술저널

저자정보: Jung, Woongsic (Division of Life Sciences, Korea Polar Research Institute, KIOST) Kim, Eun Jae (Division of Life Sciences, Korea Polar Research Institute, KIOST) Lim, Suyoun (Division of Life Sciences, Korea Polar Research Institute, KIOST) Sim, Hyunji (Division of Life Sciences, Korea Polar Research Institute, KIOST) Han, Se Jong (Division of Life Sciences, Korea Polar Research Institute, KIOST) Kim, Sanghee (Division of Life Sciences, Korea Polar Research Institute, KIOST) Kang, Sung-Ho (Division of Ocean Environment, Korea Polar Research Institute, KIOST) Choi, Han-Gu (Division of Life Sciences, Korea Polar Research Institute, KIOST)

저널정보: 한국조류학회(藻類) Algae Algae 제31권 제1호

발행연도: 2016.1

수록면: 61 - 72 (12page)

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Arctic microalgae thrive and support primary production in extremely cold environment. Three Arctic green microalgal strains collected from freshwater near Dasan Station in Ny-Alesund, Svalbard, Arctic, were analyzed to evaluate the optimal growth conditions and contents of fatty acids. The optimal growth temperature for KNF0022, KNF0024, and KNF0032 was between 4 and 8℃. Among the three microalgal strains, KNF0032 showed the maximal cell number of 1.6 × 107 cells mL<sup>-1</sup> at 4℃. The contents of fatty acids in microalgae biomass of KNF0022, KNF0024, and KNF0032 cultured for 75 days were 37.34, 73.25, and 144.35 mg g<sup>-1</sup> dry cell weight, respectively. The common fatty acid methyl esters (FAMEs) analyzed from Arctic green microalgae consisted of palmitic acid methyl ester (C16:0), 5,8,11-heptadecatrienoic acid methyl ester (C17:3), oleic acid methyl ester (C18:1), linoleic acid methyl ester (C18:2), and α-linolenic acid methyl ester (C18:3). KNF0022 had high levels of heptadecanoic acid methyl ester (26.58%) and heptadecatrienoic acid methyl ester (22.17% of the total FAMEs). In KNF0024 and KNF0032, more than 72.09% of the total FAMEs consisted of mono- and polyunsaturated fatty acids. Oleic acid methyl ester from KNF0032 was detected at a high level of 20.13% of the FAMEs. Arctic freshwater microalgae are able to increase the levels of polyunsaturated fatty acids under a wide range of growth temperatures and can also be used to produce valuable industrial materials.

#Arctic #chlamydomonadalean #fatty acid methyl ester #microalgae #psychrophilic

참고문헌 (46)

참고문헌 신청

Abomohra, A. E. -F. / 2013 / Lipid and total fatty acid productivity in photoautotrophic fresh water microalgae: screening studies towards biodiesel production / J. Appl. Phycol 25:931~936

Ahn, J. -W. / 2012 / A new Arctic Chlorella species for biodiesel production / Bioresour. Technol 125:340~343

Buchheim, M. A. / 1997 / Phylogeny of the VLE-14 Chlamydomonas (Chlorophyceae)group: a study of 18S rRNA gene sequences / J. Phycol 33:1024~1030

Buchheim, M. A. / 1996 / Phylogeny of the Chlamydomonadales (Chlorophyceae) a comparison of ribosomal RNA gene sequences from the nucleus and the chloroplast / Mol. Phylogenet. Evol 5:391~402

Buchheim, M. A. / 1990 / Phylogeny of Chlamydomonas (Chlorophyta)based on cladistic analysis of nuclear 18S rRNA sequence data / J. Phycol 26:689~699

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