Investigation of performic acid oxidation in case of thiol-containing amino acid enantiomers
Kulcsszavak:
performic acid oxidation, cysteine and methionine enantiomers, racemizationAbsztrakt
Performic acid oxidation of cysteine and methionine resulting in the formation of cysteic acid and methionine-sulphon has been applied in order to avoid the loss of these two sulphur containing amino acids during the acidic hydrolysis of proteins that is necessary prior to amino acid analysis. The aim of the research was assigned by the increasing demand for the determination of the amount amino acid enantiomers: the applicability of performic acid oxidation was evaluated in this point of view. Racemization of L-cysteine and L-methionine was found not significant during oxidation with performic acid, therefore this process can be applied before hydrolysis during quantification of cysteine and methionine enantiomers. Additionally, the quantification of cysteic acid and methionine-sulphon enantiomers was accomplished in the form of their diastereoisomer derivatives via the development of a reversed phase high performance liquid chromatography method.
Hivatkozások
Csapó, J. (1982). Gyors módszer élelmiszerek és takarmányok cisztein-tartalmának meghatározására ioncserés oszlopkromatográfiával. Élelmiszervizsgálati közlemények. 4. 163–172.
Einarsson, S., Folestad S., Josefsson, B. (1987). Separation of amino acid enantiomers using precolumn derivatization with o-phtalaldehyde and 2,3,4,6,-tetra-O-acetil-1-thio-β-glucopyranoside. J. Liquid Chrom., 10(8–9), 1589–1601. https://doi.org/10.1080/01483918708066789
Hirs, C. H. W. (1956). The oxidation of ribonuclease with performic acid. J. Biol. Chem., 219(2), 611–621. https://doi.org/10.1016/S0021-9258(18)65721-7
Martin, A. J. P., Synge, R. L. M. (1945). Analytical chemistry of the proteins. In: Advances in Protein Chemistry. Vol. 2. (Eds. Anson, M. L., Edsall, J. T.) Academic Press, New York. 1–83. https://doi.org/10.1016/S0065-3233(08)60620-8
Schram, E., Moore, S., Bigwood, E. J. (1954). Chromatographic determination of cystine as cysteic acid. Biochem. J., 57(1), 33–37. https://doi.org/10.1042/bj0570033
Varga-Visi. É., Terlaky-Balla, É., Pohn, G., Kametler, L., Csapó, J. (2000). RPHPLC determination of L- and D-Cystine and cysteine as cysteic acid. Chromatographia, 51. 325–327. https://doi.org/10.1007/BF02492828
Letöltések
Megjelent
Folyóirat szám
Rovat
License
Copyright (c) 2006 Albert Csilla, Sára Péter, Lóki Katalin, Vargáné Visi Éva, Salamon Sz., Csapó János

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
