不同香型烤烟类胡萝卜素及其降解产物含量与感官质量的关系

Relationship of Carotenoid and its Degradation Products with Sensory Quality of Flue-cured Tobacco of Different Flavor Styles

运用相关、回归和聚类分析等方法，研究了不同香型典型产区烤烟类胡萝卜素及其降解产物含量与感官质量的关系。结果表明：①两个清香型产区烤烟的类胡萝卜素含量、叶黄素所占比例和降解产物总量显著或极显著高于豫中浓香型产区，降解产物中届一大马酮在两类香型产区之间差异较大。②豫中产区烤烟感官质量随类胡萝卜素含量呈抛物线变化趋势，含量在91．7-126．8μg／g之间样品组的感官质量显著较好，滇东产区烤烟感官质量与类胡萝卜素含量呈显著负相关；闽西产区烤烟感官质量与叶黄素比例呈显著正相关，比例在47．6％～51．3％样品组的感官质量相对较好。③降解产物含量与感官质量的相关性较弱，个别产区呈现负相关关系。

The relationship of carotenoid and its degradation product contents with the sensory quality of flue-cured tobacco of different flavor styles from typical growing areas were studied with correlation, regression and cluster analysis methods. The results showed that： 1）The carotenoids content, proportion of lutein in carotenoids and total content of degradation products in samples from two growing areas of fresh flavor style flue-cured tobacco were significantly or extremely significantly higher than those in robust flavor style flue-cured tobacco from central Henan. Among carotenoid degradation products, /3-damascenone exhibited bigger difference between samples of different style tobacco from different growing areas. 2）The change of sensory quality of tobacco samples from central Henan against carotenoid contents could be represented by a parabolic curve, the samples with carotenoid contents ranged from 91.7 to 126.8 μg/g offered better sensory quality. The sensory quality of samples from eastern Yunnan was significantly negatively correlated to carotenoid content. The sensory quality of samples from western Fujian significantly positively correlated to lutein proportion, which was relatively better in the samples with the lutein proportion ranged from 47.6% to 51.3%. 3） The correlation between degradation products of carotenoids and sensory quality was relatively weaker, though there existed a negative correlation in samples from western Fujian.