Kinetics of peptide hydrolysis and amino acid decomposition at high temperature

Details Kinetics of peptide hydrolysis and amino acid decomposition at high temperature Kinetics of peptide hydrolysis and amino acid decomposition at high temperature

Jul 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993gecoa..57.3281q&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 57, Issue 14, pp.3281-3293

Computer Science

15

Scientific paper

Dipeptide hydrolysis and amino acid decomposition appear to follow a first-order rate law. The hydrolysis rate increases exponentially with increasing temperature in aqueous solution at both 265 atm and water steam pressures over the temperature range of 100 to 220°C. Dipeptide hydrolysis has a lower apparent activation energy at 265 atm (44.1 KJ/mol) than at water steam pressure (98.9 KJ/ mol). At lower temperatures (<200-220°C), the rate of peptide bond hydrolysis is faster at 265 atm than at water steam pressure. At higher temperatures (>200-220°C), however, peptide bond hydrolysis is slower at 265 atm than at water steam pressure. In aqueous solution, amino acid decomposition rates also increase exponentially with increasing temperature. Amino acid decomposition rates are much higher at 265 atm than at water steam pressure over the entire temperature range investigated.

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