Table 3 Detailed overview of the experimental conditions and observations of studies presenting quantitative kinetic information on the stability of amino acids.
From: Thermal degradation of 18 amino acids during pyrolytic processes
References | Condition | Amino acids | Kinetic reaction | E (KJ mol−1) |
|---|---|---|---|---|
Kinetics of AA decomposition in high temperature and high pressure water | ||||
Li and Brill 34 | pH = 1.5–8.5, T = 270–340 °C, P = 275 bar | Phe, Ser, Thr, Pro, His, Met | First order rate law | 110.0–190.55 (320 °C) |
Cox and Seward 32 | T = 120–165 °C 20 bar | Ala cyclization | First order rate law | 114 |
Qian et al. 35 | 100–220 °C Water steam pressure | Ala,Gly,Glu,Gly-Gly | First order rate law | 98.9(dipeptide Gly-Gly) |
Sato et al. 31 | 200–340 °C, 20 MPa | Ala, Gly,Phe, Ser and Asp | First order rate law | 154 (Ala) |
Changi et al. 33 | 220–350 °C | Phe | First order rate law | 144 |
Kinetics of AA decomposition under nitrogen or in an evacuated system | ||||
Yablokov et al. 38 | Evacuated system, T = 190–240 °C heating rate 10 °C/min | Met, Ser | First order rate law | 184–195 |
Rodante 37 | N2-filled dry box, T = 77–600 °C,heating rate 10 °C/min | 19 Amiono acids | First order rate law | 2.1–38.8 |
Kinetics of protein decomposition under nitrogen protection | ||||
Ali et al. 50 | From ambient to 900 °C | Protein of Botryococcus braunii | Follow Šesták and Berggren (SB) models | 49.5–109 |
Aniza et al. 51 | From room temperature to 600 °C | Protein of microalgae | Follow independent parallel reaction (IPR) and particle swarm optimization (PSO) model | 126.69–304.61 |
Viju et al. 52 | From room temperature to 1000 °C | Protein of Nannochloropsis oculata | Follow distributed activation energy model | 106 |
Kinetics of AA decomposition under natural condition (ambient oxygen) | ||||
This study | 160–240 °C | 18 Amino acids | First-order | 88.50–137.44 |
