烤烟油分与烟叶内在质量的关系的研究

Study on Relationship Between Tobacco Oil and Quality Indicators of Flue-cured Tobacco Leaves

以湖北中烟近2年调拨的采自19个省份73个产区的共112份样品为材料,研究了油分与烤烟烟叶内在指标的关系。通过样品外观评价,对油分进行细分赋值,将样品分组为油分"少、稍有、有、多"4组。实验测定了4组样品的主要化学成分,并同时采用暗评法评价了样品香气质、香气量、杂气、刺激性、余味、灰色、燃烧型等感官评吸指标。研究结果表明:烟叶样品中,油分"稍有"的样品占比最高,比例为42%;其次为油分"有",占比34.8%;油分"少"和"多"占比相对较低。油分与总糖、还原糖、钾含量呈极显著相关。油分与感官质量的香气质、杂气、余味等指标呈极显著相关,即随着油分的增多,感官质量提高。以烤烟油分为自变量,采取因子分析法对不同油分档次烟叶的感官质量、化学成分进行因子分析。结果表明,以油分"多"的烟叶样品内在指标综合质量最好,其次为油分"有"的烟叶样品。

The relationship between the tobacco oil and the quality indicators was studied with 112 flue-cured tobacco samples from 73 areas in 19 provinces in recent years.According to the appearance evaluation of the samples,the oil content was subdivided and assigned.The samples were divided into four groups,that is little oily,less oily,oily,and rich oily.The main chemical constituents of samples were measured,and the aroma,odor,irritant,aftertaste,gray,and combustion were evaluated by dark evaluation.In all the samples,42%tobacco leaves were in the grade of"less oily",34.8% of them were in the grade of"oily",and the rest were in the grade of"little oily"or"rich oily".The oil contents were significantly correlated with the total sugar,reducing sugar,and potassium content.Meanwhile,tobacco oil contents were significantly positive correlated with the aroma quality,the offensive odor,and the aftertaste.It revealed that the smoking quality was better with the increasing oil contents.The factor analysis was carried out on the sensory quality and chemical composition of different oil grades with the flue-cured tobacco oil as the independent variable.It is indicated that tobacco leaves with high oil content is the best in the comprehensive quality,followed by that with high oil content.