黔南烤烟化学成分与感官质量的典型相关分析

目的]探寻提升黔南烟区烤烟品质途径,找出影响感官质量的关键化学指标,为黔南烟区烤烟品质提升提供参考。方法]以黔南烤烟样本为材料,通过对烟叶化学成分和感官质量指标的量化测定,采用简单相关分析、多重差异分析和典型相关分析等方法分析了烟叶化学成分和感官质量的相关关系。结果]黔南烟区不同等级和不同产地烤烟化学成分和感官质量存在显著差异,总植物碱、两糖和总氮与感官评吸质量相关性较强,总植物碱、总氮含量和糖碱比、氮碱比是影响烤烟感官评吸质量的重要因素。在一定范围内,随着糖碱比增加和总植物碱、总氮的减少,感官评吸质量中的香气量、浓度和劲头的得分呈现降低的趋势;随着氮碱比增加,感官评吸质量中的香气质、香气量、杂气和刺激性的得分呈现降低的趋势。结论]适度降低总植物碱和总氮含量,提高糖碱比和氮碱比有利于提升黔南烟区烤烟的感官评吸质量。

Canonical Correlation Analysis between Chemical Components and Smoking Quality of Flue-cured Tobacco in Qiannan

Objective] To explore the way to improve the quality of flue-cured tobacco in Qiannan tobacco-growing areas, to find out the key chemical indicators that affect the sensory quality, and to provide reference for the quality improvement of flue-cured tobacco in Qiannan tobac-co-growing areas. Method] With Qiannan flue-cured tobaccos as the research materials, the correlation between chemical composition and sensory quality of tobacco leaves was analyzed by simple correlation analysis, multiple difference analysis and typical correlation analysis. Result] There were significant differences in the chemical composition and sensory quality of flue-cured tobacco from different grades and dif-ferent producing areas in Qiannan tobacco-growing areas.The total plant alkaloids, two sugars and total nitrogen had a strong correlation with the sensory evaluation quality.Total plant alkali, total nitrogen content,sugar-alkali ratio and nitrogen-alkali ratio were important factors affect-ing the sensory evaluation of flue-cured tobacco.In a certain range, with the increase of the sugar-nicotine ratio and the decrease of total plant alkali and total nitrogen, the aroma volume, concentration and momentum of sensory evaluation showed a decreasing trend.With the increase of nitrogen-alkali ratio, the aroma quality, aroma quantity, miscellaneous and irritating scores in sensory evaluation showed a decreasing trend.Conclusion] It is helpful to improve the sensory evaluation quality of flue-cured tobacco in Qiannan tobacco-growing areas by reducing total plant alkali,enhancing sugar-alkali ratio and nitrogen-alkali ratio.