湖南烟区中部烤烟总糖含量状况及与评吸质量的关系

采集湖南烟区C3F等级烟叶样本253份,采用连续流动法测定烟叶总糖含量以及对评吸质量的量化评定,研究了湖南烤烟总糖含量的生态区域差异及烟叶总糖含量与评吸质量评价指标间的量化关系。结果表明,湖南主产烟区C3F等级烤烟总糖含量范围为18.55%～31.04%,均值为25.02%,其中含量大于25%的样本占49.80%;在区域差异方面,湘南烟区和湘西北烟区的烟叶总糖含量比湘中烟区高,在空间分布上有分别从湘南、湘西北2个高值区向中部地区,再向东北方向逐渐递减的趋势。随着烟叶总糖含量增加,烤烟的香气量、杂气和刺激性减少,浓度降低,余味变好;当烟叶总糖含量大约在25.5%时,香气质、香味、劲头、吃味分值和评吸总分最高。

Total sugar content of cutter leaf in flue-cured tobacco from Hunan province and its correlation with smoke quality

253 flue-cured tobacco samples of C3F grade were collected from main tobacco-growing areas in Hunan Province, and total sugar content was determined by continuous flow method and smoke quality was quantitatively assessed to study eco-regional difference of total sugar content and their quantitative correlations with evaluation indices of smoke quality. Results show that total sugar content in flue-cured tobacco leaf of C3F grade was 18.55%?31.04% , with a mean of 25.02% . Samples with total sugar content above 25% accounted for 49.8 % of the total. Total sugar content of flue-cured tobacco leaf in south Hunan and northwest Hunan were higher than that in central Hunan. Total sugar content decreased gradually from south Hunan and west Hunan to central Hunan along northeast orientation. With increasing total sugar content in tobacco leaf, aroma quantity, offensive taste, and irritancy decreased, less smoke concentration and improved after-taste. Aroma quality, physiological strength, total flavor, general taste, and total smoke quality value were best when total sugar content was about 25.5%.