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Abiotic Synthesis of Guanine with High-Temperature Plasma
Authors:Miyakawa  Shin  Murasawa  Ken-Ichi  Kobayashi   Kensei  Sawaoka   Akira B.
Affiliation:(1) Department of Chemistry and Biotechnology, Faculty of Engineering, Yokohama National University, Yokohama, 240-8501, Japan;(2) Materials and Structures Laboratory, Tokyo Institute of Technology, Yokohama, 226-8503, Japan;(3) Department of Chemistry and Biotechnology, Faculty of Engineering, Yokohama National University, Yokohama, 240-8501, Japan;(4) Present address: Daido Institute of Technology, Minami, Nagoya, 457-8530, Japan
Abstract:The origin of guanine has been unknown, thoughthere are some reports concerning its abiotic synthesis. Weshow here that guanine, as well as uracil and cytosine, aresynthesized from a 90%N2–10%CO–H2O gas mixture via a complex organic product produced with the high-temperature and rapidquenching technique. This result implies that a large amountof complex organic matter including precursors of bioorganiccompounds might have been produced on the primitive earthafter cometary impacts.
Keywords:abiotic synthesis  cometary impact  cytosine  guanine  high-temperature plasma  magneto-plasma dynamic arc-jet  origin of life  uracil
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