辐照对卷烟中烟草特有亚硝胺含量的影响  

EFFECT OF IRRADIATION ON TSNAs IN CIGARETTE

作　　者：冯敏[1] 朱佳廷[1] 杨萍[1] 王德宁[1] 顾贵强[1] 

机构地区：[1]江苏省农业科学院原子能农业利用研究所,江苏南京210014

出　　处：《核农学报》2012年第8期1137-1141,共5页Journal of Nuclear Agricultural Sciences

基　　金：江苏省农业科技自主创新资金项目(cx(09)107)

摘　　要：以3种市售卷烟为材料,采用0、5、10、20和30kGy 5个剂量对其进行辐照处理,研究了辐照对卷烟中TSNAs含量的影响,主要采用液相色谱/质谱联用的方法,检测了N'-亚硝基降烟碱(NNN)、N'-亚硝基新烟碱(NAT)、N'-亚硝基假木贼碱(NAB)和4-(N-甲基亚硝胺基)-1-(3-吡啶基)-1-丁酮(NNK)4项指标的含量。研究发现:辐照可以降低卷烟主流烟气和烟丝中TSNAs的含量,但降解率高低与辐照剂量大小没有明显的线性相关性;4种TSNAs分析物NNN、NNK、NAT和NAB经相同剂量辐照后的降解幅度不同,不同卷烟中的同一种分析物辐照后的降解幅度也不完全相同;卷烟2的降解效果最好,主流烟气和烟丝中的降解率最高都达88%;烤烟型卷烟(2和3)主流烟气中和烟丝中的最高降解率接近,混合型卷烟主流烟气中的最高降解率和烟丝中相差较大。辐照对卷烟主流烟气和烟丝中TSNAs的降解效果与对TSNAs纯品的降解效果有差异。Three brands of cigarette were used as experimental materials to investigate effect of irradiation on TSNAs by detecting their contents of NNN,NNK,NAT and NAB by method of LC-MS/MS after irradiated by different doses from 0 to 30kGy.Results showed that TSNAs detected from tobacco and mainstream smoke of three brands of cigarette irradiated by γ-rays were less than those in control,but there was no significant linear relationship between TSNAs and irradiation dose.Degradations of NNN,NNK,NAT and NAB caused by irradiation were different even treated with the same irradiation dose.In addition,for NNN,NNK,NAT or NAB,variations of their contents were also different according to different irradiation dosages.Degeneration rates of TSNAs in tobacco and mainstream smoke of cigarette2 reached more than 88%,the highest degradation rates of TSNAs were found similar in tobacco and mainstream smoke of virginia type,however those in blended type were greatly different.The effects of irradiation on TSNAs in cigarettes and TSNAs standards were so different from TSNAs single product.

关 键 词：卷烟 辐照 烟草特有亚硝胺 液相色谱 质谱联用 

分 类 号：TS412[农业科学—烟草工业]