基于挥发性特征组分的卷烟烟丝质量趋势分析

摘要

为考察卷烟烟丝的质量变化趋势,采用顶空气相色谱质谱联用法(HS-GC/MS)检测不同品牌、不同批次卷烟烟丝中50种挥发性特征组分含量(质量分数),结合主成分分析-马氏距离(PCA-MD)统计方法对检测数据进行处理并进行质量趋势分析.结果表明:①C品牌5个批次卷烟烟丝样品可分成5类,且2015与2016年烟丝特征组分含量波动较大;2016年7—10月份的烟丝中50种挥发性特征组分含量基本一致,仅8月份出现细微波动.该变化趋势与烟丝配方调整的情况一致.②2015年C、D品牌烟丝样品中特征组分含量的差异较大,表明可以用PCA对不同品牌质量特征进行定性描述.③C、D品牌烟丝样品间的马氏距离较大,D品牌的马氏距离是C品牌的5~10倍,表明可以用马氏距离对卷烟烟丝质量波动状况进行定量表征.该研究结果可用于卷烟产品的均质化评价.%To investigate the variations in quality trend of cigarette cut fillers,HS-GC/MS was used to determine the contents of 50 volatile characteristic components in cut fillers of cigarettes of different batches and brands. By combining PCA-MD(Principal component analysis-Mahalanobis distance)statistical methods, the determined data were processed to analyze the variation trend of quality of cut filler. The results showed that: 1)The cut fillers of cigarettes of five batches of brand C could be classified into five groups,the contents of characteristic components differed greatly between the samples produced in 2015 and 2016. From July to October in 2016,the contents of 50 volatile characteristic components in the cut fillers were basically consistent except that there was slight fluctuation in August,which could be attributed to the tobacco blend adjustment. 2)For the samples produced in 2015,there were great differences in the contents of characteristic components in the cut fillers of brands C and D,which indicated that PCA could be used to qualitatively describe the quality characteristics of the different brands. 3)The MD of cut fillers differed greatly between brands C and D,and the MD of cut filler of brand D was 5 to 10 times as that of brand C,which indicated that MD could be used to quantitatively characterize the quality variation of the cut filler. The research results could be applied to the quality consistency evaluation of the final cigarettes.