烤烟主要化学成分与烟叶等级和醇化时间的相关性研究  

A Study on Chemical Components in Flue-cured Tobacco and Correlation with Grades and Alcoholization Duration of Tobacco

作　　者：巩效伟[1,2] 段焰青[2] 黄静文[1] 者为[2] 李红娟[1] 杨金奎[1] 

机构地区：[1]云南大学生物资源保护与利用重点实验室,云南昆明650091 [2]红云红河烟草(集团)有限责任公司技术中心,云南昆明650202

出　　处：《江西农业大学学报》2010年第1期31-34,50,共5页Acta Agriculturae Universitatis Jiangxiensis

基　　金：云南省科技攻关及高新技术发展计划项目(2006GG22);云南省应用基础研究计划项目(2006C004Q;2007C170M);云南省中青年学术和技术带头人后备人才项目(2009CI052)

摘　　要：以9种不同醇化时间和不同等级的云南K326烤烟品种为研究对象,用近红外光谱技术对其主要化学成分进行检测,并测定其pH值。结果表明:随着醇化时间的延长,烟叶中总氮、烟碱和挥发碱的含量均有下降趋势;蛋白质含量没有明显变化;还原糖、总糖和纤维素的含量没有规律性变化,三者含量的变化与烟叶等级相关。对于上部烟叶(B3F),还原糖含量先上升后下降,总糖含量逐渐下降,纤维素含量先下降后上升;对于中部烟叶(C3F),还原糖含量逐渐上升,总糖含量先下降后上升,纤维素含量逐渐上升;对于下部烟叶(X3F),还原糖含量先下降后上升,总糖含量先下降后上升,纤维素含量先上升后下降。随着烟叶醇化时间的延长,烟叶pH值逐渐下降,其中中部烟叶(C3F)的pH值变化幅度最小。The main chemical components in nine Yunnan flue-cured tobaccos cv.K326 sampled at dif-ferent alcoholization durations and grades were determined by Near-infrared Spectroscopy technique and the pH of the samples was also detected.The results showed that：1） the contents of total nitrogen,nicotine and alkali decreased with the extension of aging time,and that of protein did not change obviously;2）the contents of reducing sugar,total sugar and cellulose changed irregularly,which were closely related to the tobacco grades.For tobacco leaves B3F,the content of reducing sugar increased and then decreased,the content of total sugar decreased gradually,and the content of cellulose decreased and then increased;for tobacco leaves C3F,the content of reducing sugar increased all the time,the content of total sugar decreased and then increased,and the content of cellulose increased;for tobacco leaves X3F,the content of reducing sugar decreased and then increased,the content of total sugar decreased and then increased,and the content of cellulose increased and then decreased;and 3） the pH of the tobacco leaves decreased with the prolongation of aging time,and the pH of the middle tobacco leaves changed less than that of upper and lower tobacco leaves.

关 键 词：烤烟 化学成分 烟叶等级 醇化时间 

分 类 号：S572.01[农业科学—烟草工业]