Literature DB >> 168532

Shock synthesis of amino acids II.

A Bar-nun.   

Abstract

The synthesis of amino acids behind shock waves in methane, ethane, ammonia, and water vapor was further investigated. Aldehydes and HCN are formed separately in the non-homogeneous gas during the high temperature period and recombine with ammonia during the thermal quench period, to form chi-amino nitriles. The chi-amino nitriles are either hydrolyzed by excess water vapor during the quench period or emerge as such after the reaction is completed. A combined gas chromatograph-mass spectrometer analysis of the reaction product showed identical amounts of D and L amino acids, thus confirming the absence of contaminants. Thunder shock waves were shown to be a suitable source of energy for the production of amino acids.

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Year:  1975        PMID: 168532     DOI: 10.1007/bf01372395

Source DB:  PubMed          Journal:  Orig Life        ISSN: 0302-1688


  4 in total

1.  Long-wavelength ultraviolet photoproduction of amino acids on the primitive Earth.

Authors:  C Sagan; B N Khare
Journal:  Science       Date:  1971-07-30       Impact factor: 47.728

2.  'Thunder': shock waves in pre-biological organic synthesis.

Authors:  A Bar-Nun; M E Tauber
Journal:  Space Life Sci       Date:  1972-06

3.  A practical quantitative gas chromatographic analysis of amino acids using the n-propyl n-acetyl esters.

Authors:  J R Coulter; C S Hann
Journal:  J Chromatogr       Date:  1968-07-23

4.  Shock synthesis of amino acids in simulated primitive environments.

Authors:  A Bar-Nun; N Bar-Nun; S H Bauer; C Sagan
Journal:  Science       Date:  1970-04-24       Impact factor: 47.728

  4 in total
  1 in total

Review 1.  A possible energetic role of mineral surfaces in chemical evolution.

Authors:  L M Coyne
Journal:  Orig Life Evol Biosph       Date:  1985       Impact factor: 1.950

  1 in total

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