Lipids of Haloferax alexandrinus Strain TM^T : an Extremely Halophilic Canthaxanthin-Producing Archaeon

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概要

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• The core lipids, polar and non polar lipids, of the novel canthaxanthin-producing archaeon, Haloferax alexandrinus strain TM^T, were investigated using thin-layer chromatography (TLC), spectrophotometry, electron ionization-mass spectroscopy (EI-MS), fast atom bombardment mass spectrometry (FAB-MS), nuclear magnetic response spectrometry (^<13>C-NMR) and high performance liquid chromatography (HPLC). This archaeon appeared to contain diphytanyl diether lipids (C_<20>-C_<20>) as core lipids. The major phospholipids were found to be phosphatidylglycero-phosphate-methyl ester (PGP-Me) and phosphatidylglycerol (PG), but no phosphatidylglycero-sulfate was detected. The strain contained two glycolipides, sulfated diglycosyl diether (S-DGD-1) and unsulfated diglycosyl diether (DGD). Analysis of the non polar lipids revealed the presence of β-carotene, 3-hydroxyechinenone, γ-carotene, cis-astaxanthin, lycopene, trisanhydro-bacterioru-berin, monanhydro-bacterioruberin, bacterioruberin isomer, bacterioruberin and canthaxanthin. Although the polar lipids profile of Hfx. alexandrinus strain TM^T was similar to those of other species of the genus Haloferax, the non polar lipid (carotenoids) profile was markedly different. Further experiments on the influence of NaCl concentration on the lipids composition of Hfx. alexandrinus strain TM^T demonstrated the dependence of the proportion of each of bacterioru-berin, β-carotene and canthaxanthin on the NaCl concentration in the growth media.

• 公益社団法人日本生物工学会の論文
• 2002-01-25

著者

• Ohta Y

  Faculty Of Applied Biological Science Hiroshima University

• Ohta Yoshiyuki

  Faculty Of Engineering Muroran Institute Of Technology:mobile Radio Terminals Development Section Fu

• Tarek Awad

  Faculty Of Applied Biological Science Hiroshima University

• DALAL ASKER

  Department of Food Science and Technology, Faculty of Agriculture, Alexandria University

• Ohta Yoshiyuki

  Faculty Of Applied Biological Science Hiroshima University

• Dalal Asker

  Department Of Food Science And Technology Faculty Of Agriculture Alexandria University : Faculty Of

• Asker Dalal

  Department of Food Science and Technology, Faculty of Agriculture, Alexandria University : Faculty of Applied Biological Science, Hiroshima University

• Awad Tarek

  Faculty of Applied Biological Science, Hiroshima University

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