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Belousov–Zhabotinskii type oscillations with amino acids or peptides as organic substrates in the presence of Mn 2+ and Fe(phen) 3 2+ as coupled catalysts
Author(s) -
Li Hexing,
Jin Ronghua
Publication year - 1998
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/(sici)1097-4601(1998)30:4<243::aid-kin1>3.0.co;2-s
Subject(s) - chemistry , glycine , amino acid , alanine , cystine , serine , catalysis , peptide , aspartic acid , phenylalanine , tyrosine , glutamic acid , threonine , stereochemistry , organic chemistry , biochemistry , cysteine , enzyme
Nine amino acids, aspartic acid, glycine, serine, tyrosine, alanine, glutamic acid, threonine, cystine, phenylalanine, and two peptides, and two peptides, glycine‐glycine peptide, glutamic acid‐cystine‐glycine peptide, give rise to damped oscillations of the Belousov–Zhabotinskii(BZ) type in a batch reactor. Both Mn 2+ and Fe(phen) 3 2 are essential for most of those oscillations; and the oscillations in [Mn 3+ ] and [Fe(phen) 3 3+ ] are also observed. The role of two metallic ions played in the oscillations are analyzed, showing that Mn 2+ catalyzes the oxidation of the amino acids or peptides by BrO 3 − to produce some intermediates which effectively reduce Br 2 to Br − catalyzed by Fe(phen) 3 2+ . © 1998 John Wiley & Sons, Inc. Int. J. Chem Kinet 30: 243–247, 1998.