Kinetics studies on thermal isomerization of β-N-oxalyl-L-α,β-diaminopropionic acid by capillary zone electrophoresis

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出版日

DOI 10.1039/A902229E

インパクトファクター 3.676

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要旨

The reciprocal thermal isomerization in aqueous solution between neurotoxic nonprotein amino acid β-N-oxalyl-L-α,β-diaminopropionic acid (β-ODAP) in seeds of Lathyrussativus (LS; grass pea) and its nontoxic isomer α-N-oxalyl-L-α,β-diaminopropionic acid (α-ODAP) was studied using capillary zone electrophoresis (CZE) in the range from pH=2.5 to pH=13 at T=75°C, and a decrease of the equilibrium concentration ratio of α-ODAP with the increase of pH of the solution was found. In the range of temperatures 55–95°C, The rate constants have been measured and thermodynamic parameters such as activation energy (Ea) and the pre-exponential factor (A) have been calculated.

掲載誌

Physical Chemistry Chemical Physics

CiteScore: 5.5

自己引用率: 10.3%

年間論文数: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.