摘要

Burley tobacco (Nicotiana tabacum L.) is an important raw material in the production of Chinese-style blended cigarettes. However, the high levels of tobacco-specific nitrosamines (TSNA) have devalued the industrial use of burley tobacco and limited its sustainable use. The objective of this paper was to investigate the effects of acetylsalicylic acid (ASA) application on accumulation of TSNA, its precursors and quality of air-cured burley tobacco (Nicotiana tabacum L. cv. DaBai 1). Field experiments were conducted to determine the contents of TSNA and the precursors and the sensory quality of burley tobacco under 0, 0.1, 0.3 mM of ASA in 2014 and 2015 at Dazhou, Sichuan Province, China. The results showed that TSNA, nitrate, nitrite and alkaloids levels were significantly reduced by the application of ASA, of which the total TSNA were significantly lower by 10.40-24.75%, and two of the strong animal carcinogens in tobacco products, i.e. N-nitrosonornicotine (NNN) and 4-(methylnitrosamino) -1- (3- pyridyl) -1- butanone (NNK) were reduced by 9.01-24.23% and 11.43-26.86%, respectively. Year had significant effects on TSNA and the TSNA contents in 2014 were higher than in 2015. Interestingly, the sensory quality of burley tobacco remained or was even better after application of ASA. In conclusion, this study revealed that ASA application was able to reduce the levels of TSNA and its precursors in sustaining burley tobacco industry potentially.

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