Sorbate-nitrite interactions: acetonitrile oxide as an alkylating agent
M Teresa Pérez-Prior1, Rafael Gómez-Bombarelli, Marina González-Pérez
1Departamento de Quimica Fisica, Universidad de Salamanca, E-37008 Salamanca, Spain.
Chemical Research in Toxicology
|July 8, 2009
Summary
Acetonitrile oxide (ACNO) from sorbate-nitrite mixtures has alkylating potential but is less significant due to its instability. This finding aligns with ACNO
Area of Science:
- Food Chemistry
- Chemical Toxicology
- Organic Chemistry
Background:
- Sorbic acid and nitrite are common in food.
- Sorbate-nitrite mixtures can form DNA-damaging compounds.
- Investigating these interactions is crucial for food safety.
Purpose of the Study:
- To investigate the alkylating potential of products from sorbate-nitrite interactions.
- To identify the specific compound responsible for alkylating activity.
- To assess the significance of this alkylating capacity.
Main Methods:
- Reaction of sorbate-nitrite mixtures.
- Use of 4-(p-nitrobenzyl)pyridine (NBP) as an alkylating agent trap.
- Spectrophotometric analysis of adduct formation.
- Kinetic analysis of the alkylation and hydrolysis reactions.
Main Results:
- Acetonitrile oxide (ACNO) was identified as the alkylating agent.
- ACNO formed an adduct with NBP, indicating alkylating capacity.
- Kinetic analysis revealed a low alkylating efficiency and high adduct instability.
- The alkylating capacity of ACNO was found to be less significant compared to other agents.
Conclusions:
- Acetonitrile oxide (ACNO) is the primary alkylating species in sorbate-nitrite mixtures.
- The instability of the ACNO-NBP adduct suggests low overall alkylating significance.
- These findings are consistent with the low carcinogenicity observed for ACNO.
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