烟草贮藏过程中包装方式对TSNAs形成的影响

贮藏阶段是烟叶和烟梗内烟草特有亚硝胺(TSNAs)形成的重要时期,为探索有效抑制贮藏期间TSNAs形成的方法,以白肋烟、烤烟、雪茄茄芯和茄衣烟叶叶片和烟梗为材料,研究了不同包装方式对常温贮藏烟叶和高温贮藏烟叶TSNAs含量的影响.结果表明,白肋烟烟叶采用不同包装方式常温条件下贮藏一年后TSNAs增加幅度差异显著,真空包...

Effects of packaging methods on the formation of TSNAs in tobacco during storage

The storage stage of tobacco leaves and stems is an important period for the formation of tobacco specific nitrosamines (TSNAs). In order to explore the effective methods to inhibit the formation of TSNAs during storage, the effects of different conventional packaging methods and vacuum packaging on TSNAs content in tobacco leaves stored at room temperature and high temperature were studied using burley tobacco, flue-cured tobacco, cigar core leaves and stems as the material. The results showed that the TSNAs content in f burley tobacco leaves after natural storage with different packaging methods was significantly different. The content of TSNAs in tobacco leaves after vacuum packaging was the lowest, which was 45.45% and 46.02% lower than that of carton packaging and plastic packaging, respectively, and the content of neutral aroma components in vacuum-packaged tobacco leaves was higher. After different types of tobacco leaves and stems were stored at high temperature, the content of TSNAs in leaves and stems after conventional packaging increased significantly, but the increase range of TSNAs in different types of tobacco leaves under vacuum packaging was significantly reduced. Compared with tobacco leaves stored at high temperature under conventional packaging, the total TSNAs content in cigar core leaves and stems decreased by 38.52% and 44.80%, respectively that of cigar jacket leaves and stems decreased by 28.57% and 35.86%, respectively, and that of burley tobacco leaves and stems decreased by 40.65% and 20.84%, respectively. The TSNAs content in stems of the above three types of tobacco was significantly higher than that in leaves. The total TSNAs contents in leaves and stems of flue-cured tobacco under vaccum packaging were 21.52% and 38.29% lower than those in leaves and stems under conventional packaging, and the TSNAs content in leaves was significantly higher than that in stems. Vacuum packaging can effectively isolate oxygen and inhibit the formation and accumulation of TSNAs during storage.