Characterization of water-extractable amino acids in the sub-surface of semi-permafrost environments
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概要
- 論文の詳細を見る
Terrestrial core samples of semi-permafrost sediment were analyzed for total free amino acids (TFAA). The TFAA content ranged from 12.0 to 462.0 nmol/g of sediment, and generally consisted of protein amino acids as the most abundant component of TFAA. The depth profiles in terms of the content drastically decreased with the depth, followed by the vertical distribution patterns of total hydrolyzed amino acids (THAA) within the same sediment. The abundance of THAA was 14 to 327 times larger than that of TFAA. Plots of TFAA versus THAA values yielded a straight line, as defined by the equation THAA = 10.1 x TFAA^1.4 (R^2 = 0.86) based on the least-squares method. The molar ratio of β-alanine and γ-aminobutyric acid did not increase with the depth via diagenesis, as was the case in the THAA fraction. On the other hand, the molar ratio of basic amino acids such as histidine and ornithine gradually decreased with increasing depth. The present study determined that the major organic matter content in the sediment consisted not of free, but bound amino acid analogs.
- The Chemical Society of Japanの論文
- 2005-11-15
著者
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KOBAYASHI Kensei
Department of Chemistry and Biotechnology, Yokohama National University
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Gupta Lallan
Kochi Inst. Core Sample Res. (jamstec) Kochi Jpn
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MARUMO Katsumi
Institute for Marine Resources and Environment (MRE), National Institute for Advanced Industrial Sci
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TAKANO Yoshinori
21st Century COE Program on "Neo-Science of Natural History," Division of Earth and Planetary Scienc
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GUPTA Lallan
Institute of Geology and Geoinformation (IGG), National Institute for Advanced Industrial Science an
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KAWAHATA Hodaka
Institute of Geology and Geoinformation (IGG), National Institute for Advanced Industrial Science an
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GUPTA Lallan
National Institute of Advanced Industrial Science and Technology
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KAWAHATA Hodaka
National Institute of Advanced Industrial Science and Technology
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KAWAHATA HODAKA
Geological Survey of Japan
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Kobayashi Kensei
Faculty Of Engineering Yokohama National University
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Kobayashi Kensei
Department Of Chemistry And Biotechnology Faculty Of Engineering Yokohama National University
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Kawahata Hodaka
Institute For Marine Resources And Environment National Institute Of Advanced Industrial Science And
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Marumo Katsumi
Institute Of Geology And Geoinformation Aist
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Takano Yoshinori
Institute Of Geology And Geoinformation Aist
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Kawahata Hodaka
Osaka City Univ. Osaka Jpn
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Marumo Katsumi
Institute of Geology and Geoinformation, AIST
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