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Effects and mechanisms of using “clean” smoke particles in the smoking process on the formation of β-carboline heterocyclic amines (β-CHAs) in smoked meat patties

Xing Shen,Yang Chen,Xiuxiu Liu,Xuejiao Qie,Zhongping Chai,Maomao Zeng

β -Carboline heterocyclic amines ( β -CHAs), known for their synergistic neurotoxic and carcinogenic effects, are predominantly produced by humans through cigarette smoke and food and are found particularly in meats cooked at high temperatures. Few studies have explored the differences in the mechanisms of accumulation of β -CHAs in smoked meat and meat processed at high temperatures. In this research, the concentration of β -CHAs in smoked meats prepared using a variety of wood materials was measured using LC MS/MS. Additionally, key volatile organic compound markers associated with β -CHAs accumulation in smoke were identified through GC MS and multivariate statistical analysis and subsequently confirmed in a chemical simulation system. Three types of strainers, each with a distinct aperture size, were used to assess the efficacy of particle filtration in reducing β -CHAs levels in smoked meat. The findings indicated that smoke exposure indeed increases the β -CHAs content of meat. However, only the strainer capable of filtering PM2.5-sized particles reduced the amount of β -CHAs present compared to the control group. In contrast, strainers with larger pore sizes facilitated excessive accumulation of β -CHAs. The presence of aldehydes such as 1 H-pyrrole-2-carboxaldehyde, 5-methylfurfural, benzaldehyde , furfural , and nonanal exhibited a positive correlation with the accumulation of β -CHAs. Conversely, phenolic compounds , including 2-methoxy-4-vinylphenol, 2-methoxy-5-methylphenol, p- cresol, phenol, 2-methoxy-4-(1-propenyl)-, ( Z )-, phenol, 3-ethyl-, and phenol, 4-ethyl-2-methoxy-, showed a negative correlation. Thus, filters made from chelated carbonyl trap materials both chemically and physically disrupt the buildup of β -CHAs in smoked meats. The use of this approach will not only improve the quality of these products but will also contribute to decreasing the amount of inhalation pollutants released into the environment.