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4 papers
LC/ESI-MS analysis of underivatized amino acids and mass spectrum
Yoshinori Takano, Yoshito Chikaraishi, Naohiko Ohkouchi
We report the method of LC/ESI-MS analysis of underivatized amino acids with corresponding mass spectrum and fragmentation patterns. Diagnostic product ions determined by mass spec…
In situ ore formation experiment: Amino acids and amino sugars trapped in artificial chimneys on deep-sea hydrothermal systems at Suiyo Seamount, Izu-Bonin Arc, Pacific Ocean
Takano, Y., Marumo +12
The present study reports on the bio-organic composition of a deep-sea venting hydrothermal system originating from arc volcanism; the origin of the particulates in hydrothermal fl…
Enantiomer-specific isotope analysis of D- and L-alanine: Nitrogen isotopic hetero- and homogeneity in microbial and chemical processes
Yoshinori Takano, Yoshito Chikaraishi, Naohiko Ohkouchi
Nitrogen isotopic hetero- and homogeneity of D-α-alanine and L-α-alanine were investigated in microbial processes in the domain Bacteria and in chemical processes in symmetric orga…
Amino acid precursors from a simulated lower atmosphere of Titan: Experiments of cosmic ray energy source with 13 C- and 18 O-stable isotope probing mass spectrometry
Toshinori Taniuchi, Yoshinori Takano, Kensei Kobayashi
The organic haze of aerosols that shrouds the Saturnian moon Titan has previously been studied by both observations and laboratory simulation experiments. Here we report the abioti…