云南烤烟主产烟区烟叶化学成分比较分析

Comparative Analysis on Chemical Components in Flue-cured Tobacco Leaf from the Main Tobacco Growing Areas of Yunnan Province

对云南6个主产烟区、3个等级共计164个烤烟样本的主要化学成分进行了分析和评价,并与津巴布韦烤烟品质相比较。结果表明:云南6个主产烟区烟叶的水溶性总糖、还原糖含量明显偏高,总氮、烟碱和氯离子含量适宜,蛋白质、挥发酸、石油醚提取物总量、钾离子偏低;云南6个主产烟区烟叶的经验指标两糖差值、钾氯比值大小适宜,糖碱比值偏高,氮碱比值偏低;云南6个主产烟区烟叶中总烟碱、蛋白质、挥发碱、石油醚提取物总量和两糖差值与津巴布韦烟叶接近,水溶性总糖、还原糖含量和糖碱比值、钾氯比值均高于津巴布韦烟叶,总氮、挥发酸和钾离子、氯离子含量以及氮碱比值均小于津巴布韦烟叶。

The main components of 164 samples of flue-cured tobacco with three grates in 6 chief tobacco-growing areas of Yunan Province were analyzed and evaluated. Compared with chemical components of flue-cured tobacco from Zimbabwe, the content of water-soluble total sugar and reduced sugar were higher obviously, the content of total nitrogen, nicotine and Cl-1 were moderated and the content of protein, volatile acid, total extraction of petroleum ether were lower. The difference values between the content of total sugar and reduced sugar and the ratio of K/CI were moderated, the ratio of sugar/alkali was higher, and the ratio of N/alkali was lower. The content of total nicotine, protein, volatile alkali, total extraction of petroleum ether and the difference value between the content of total sugar and reduced sugar in flue-cured tobacco from the 6 tobacco-growing areas of Yunnan Province were nearer to that of flue-cured tobacco from Zimbabwe, the content of water-soluble total sugar, reduced sugar, and the ratio of sugar/alkali and K/Cl were higher than that from Zimbabwe and the content of total N, volatile acid, K1, Cl-1 and the ratio of N/alkali were lower than that from Zimbabwe.