Abstract: In order to understand the influence of different maturities on the quality of cigar tobacco leaves, with cigar variety ‘H382’ as material,  a field experiment was conducted to study the differences of carbohydrate content and its related enzymes activities among different maturities cigar leaves, as well the quality of flue-cured cigar leaves with different maturities treatments, including Unripe, Ripe and Overripe. The results showed that water loss rate and moisture content of cigar leaves during air drying in Ripe treatment were suitable for ripening and harvesting, thus promoting the transformation of internal substances. The starch content in Ripen leaves was the lowest among three maturities leaves, thus suggested their starch degradation was relative fast and thorough. Meanwhile the contents of total sugar and reducing sugar were relatively higher, and the activities of amylase and starch phosphatase were all the highest in Ripe leaves. The main chemical components of the air-cured cigar leaves scored the highest  in Ripe treatment. The present research provided theoretical basis for cigar tobacco leaf harvesting in Wuzhishan, Hainan province.

Key words: cigar, maturity, moisture content, carbohydrate, amylase, starch phosphorylase, chemical composition

摘要： 为了解不同成熟度晾制对雪茄烟叶品质的影响，以雪茄烟品种‘H382’为研究对象，采用大田试验方法，研究不同成熟度雪茄烟在晾制过程中碳水化合物含量及相关酶活性的变化，并对不同成熟度雪茄烟进行品质分析。结果表明，在晾制过程中适熟采收的烟叶失水速度和含水率适中，能促进内在物质的转化；雪茄烟适熟时采收，淀粉含量最低，淀粉降解速率快、降解较彻底，总糖、还原糖含量相对较高；淀粉酶和淀粉磷酸化酶活性均以适熟采收的烟叶最高；晾制后烟叶化学成分的主成分综合得分也以适熟采收的烟叶最高，化学品质较好。研究可为五指山雪茄烟叶采收提供理论基础。

关键词: 雪茄, 成熟度, 含水率, 碳水化合物, 淀粉酶, 淀粉磷酸化酶, 化学成分