Interference by nitrous acid decomposition in the kinetic study of nitrosation reactions

Jorge Arenas-Valgañõn, Rafael Gõmez-Bombarelli, Marina González-Pérez, Mario González-Jiménez, Emilio Calle, Julio Casado

Research output: Contribution to journalArticle

Abstract

Under the acidic conditions of the stomach lumen, nitrosation reactions can occur in the human body between nitrite (added to meat because of its antibotulinic properties) and many compounds such as amino acids. From the results obtained, two conclusions can be drawn: (i) In the quantitative study of nitrosation reactions, it is necessary to take into account the competing reaction of HNO2 decomposition, which in some conditions is the dominant reaction; (ii) two alternative approaches based on the initial rate method are necessary to assess the weight of nitrous acid decomposition using taurine and homotaurine as nitrosatable substrates. In strongly acidic media, the decomposition reaction is dominant: In the case of taurine, the decomposition rate is negligible at pH ≥ 3.2. In the pH 3.2-2.5 range, decomposition is lower than nitrosation but not negligible, and at pH ≤ 2.5 decomposition is faster than nitrosation. With homotaurine, HNO2 decomposition is negligible at pH higher than 4.1. In the pH 4.1-2.8 range, nitrosation is faster but decomposition should be considered, and at pH ≤ 2.8 decomposition is the dominant reaction.

Original languageEnglish
Pages (from-to)321-327
Number of pages7
JournalInternational Journal of Chemical Kinetics
Volume46
Issue number6
DOIs
Publication statusPublished - 1 Jan 2014

Fingerprint

Nitrous Acid
nitrous acid
Nitrosation
Decomposition
interference
decomposition
Kinetics
kinetics
Taurine
Nitrites
Human Body
Meat
stomach
Stomach
lumens
Meats
nitrites
human body
Amino Acids
Weights and Measures

ASJC Scopus subject areas

  • Inorganic Chemistry
  • Organic Chemistry
  • Physical and Theoretical Chemistry
  • Biochemistry

Cite this

Arenas-Valgañõn, J., Gõmez-Bombarelli, R., González-Pérez, M., González-Jiménez, M., Calle, E., & Casado, J. (2014). Interference by nitrous acid decomposition in the kinetic study of nitrosation reactions. International Journal of Chemical Kinetics, 46(6), 321-327. https://doi.org/10.1002/kin.20843
Arenas-Valgañõn, Jorge ; Gõmez-Bombarelli, Rafael ; González-Pérez, Marina ; González-Jiménez, Mario ; Calle, Emilio ; Casado, Julio. / Interference by nitrous acid decomposition in the kinetic study of nitrosation reactions. In: International Journal of Chemical Kinetics. 2014 ; Vol. 46, No. 6. pp. 321-327.
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Arenas-Valgañõn, J, Gõmez-Bombarelli, R, González-Pérez, M, González-Jiménez, M, Calle, E & Casado, J 2014, 'Interference by nitrous acid decomposition in the kinetic study of nitrosation reactions', International Journal of Chemical Kinetics, vol. 46, no. 6, pp. 321-327. https://doi.org/10.1002/kin.20843

Interference by nitrous acid decomposition in the kinetic study of nitrosation reactions. / Arenas-Valgañõn, Jorge; Gõmez-Bombarelli, Rafael; González-Pérez, Marina; González-Jiménez, Mario; Calle, Emilio; Casado, Julio.

In: International Journal of Chemical Kinetics, Vol. 46, No. 6, 01.01.2014, p. 321-327.

Research output: Contribution to journalArticle

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AU - Arenas-Valgañõn, Jorge

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Arenas-Valgañõn J, Gõmez-Bombarelli R, González-Pérez M, González-Jiménez M, Calle E, Casado J. Interference by nitrous acid decomposition in the kinetic study of nitrosation reactions. International Journal of Chemical Kinetics. 2014 Jan 1;46(6):321-327. https://doi.org/10.1002/kin.20843