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密集烘烤过程中烤烟电特性和主要化学成分变化

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烟草科技,Tobacco science&TeclllIoIogy 烟草农学,Tobacco Agro肿my 2014年第2期(总第319期) 密集烘烤过程中烤烟电特性和主要化学成分变化 贺 帆1,王 涛2,赵华武3。樊士军1’4。杨彦明1。宫长荣” 1.河南农业大学烟草学院,郑州市文化路95号450002 2.曲靖市烟草公司师宗分公司,云南省师宗县通源大街655700 3.曲靖市烟草公司罗*分公司,云南省罗*县文笔路655800 4.湖南省郴州市烟草公司,湖南省郴州市燕泉北路61号423000 摘要:为探索利用烟叶的电特性实现烘烤过程中烟叶含水率与化学成分的实时无损快速检测,进而科学 调控烘烤温湿度,采用电容仪、电桥仪和常规理化分析方法对烘烤过程中烟叶的电容值、电阻值以及主 要化学成分进行了测定。结果表明,烘烤过程中随着烟叶内大分子物质的降解转化和水分的散失,在干 球温度38℃至48℃结束时,烟叶电容值呈迅速下降的趋势,48℃之后呈极缓慢下降的趋势;电阻值的 变化整体上呈上升趋势,在干球温度36℃至42℃的烟叶变黄期升高趋*衔*缓,且3个温度点烟叶 电阻值间差异不显著(P>0.05),进入定色期(干球温度42℃之后),烟叶电阻值呈急速骤升的趋势。相关 分析表明,烟叶电容值和电阻值与主要化学成分间具有明显的相关性;电容值与含水率间的相关性达到 极显著水*,与总糖、总氮、蛋白质、口一胡萝卜素、叶黄质、新黄质和可溶性果胶间相关性达到显著水*; 电阻值与含水率和化学成分间存在一定相关性,但没有达到显著水*。 关键词:密集烘烤;烤烟;电容值;电阻值;化学成分 中图分类号:s572.062文献标识码:A文章编号:1002—0861(2014)02—0076—06 Changes of Bulk Curing HE Fanl,WANG Ta02,ZHAO Huawu3,FAN Electrical Properties of and Chemical Components in Flue—cured Tobacco During Shijunl”,YANG Yanmin91,and GONG Changrong’1 1.College of Tobacco Science,Henan Agricultural UniVersity,Zhengzhou 450002,China 2.Shizong Branch of Qujing T0bacco Company,Qujing Company,Qujing 655700,Yunnan,China 655800,Yunnan,China 3.Luoping Branch of Qujing Tbbacco 4.Chenzhou Tobacco Company of Hunan ProVince,Chenzhou 423000,Hunan,China Abstract:Tb detemine on nondestructively and real—timely the moisture content and chemical components m tobacco 1eaf dependent in the curin2 bam were on its electrical propeny during curing and further regulate the humidity and temperature a scientific basis,the capacitance and resistance of and chemical conlponents in leaVes resistance bridge,and routine degradation and physical of the measured and analyzed with capacitance meter, The results showed that: with the and chemical analvtic methods. transfomation at macro molecular end of the stage substances and when dry-bulb value water dissipation during curing,the to capacitance value dropped steeply temperature raising from 38 a 48 cc,then decreased very at slowly afterwards.The resistance range presented rising trend,which raised steadily the not dry-bulb temperature f}om 36 to 42 ℃ (vellowing stage).The dif.ferences of resistance value were significant(P>0.05)at the temperatures dry_bulb of 36, 38.and 42℃.The resistance values of 1eaves increased quickly at color nxing stage(after temperature 基金项目:国家烟草专卖局科技项目“浓香型烤烟调制关键技术”(TS?Ol-2叭1006)。 作者简介:贺帆(1975一),博士,副教授,主要从事烟草调制与加工研究。E—mail:hefanyc@163.com;‘通讯作者:宫长荣 gongchr009@126 com E。mail 收稿日期:2013一09—05



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