烟叶pH值和烟碱蒸出率的相关性研究.pdf

烟叶pH值和烟碱蒸出率的相关性研究 贺继涛1段焰青2周瑾1李敏1李姗姗1李军1杨涛1 (1．瑞升科技有限公司，昆明市高新区科医路41_号650106； 2．昆明卷烟厂，昆明市北郊上庄6502022) 摘要：用水蒸气蒸馏装置对49种不同等级烟叶的水浸液进行烟碱蒸馏试验，分析了烟叶水浸液的 自然态pH值、250mL馏出液中的烟碱含量和烟碱得率之间的关系。试验表明：烟叶的等级、产地、 烟末水浸液pH同烟碱的馏出量无明显的相关性，但烟叶水浸液的pH值同烟碱蒸出百分率在散点图 86．33％～92．79％之间，二者的关系曲线趋于平缓。 关键词：烟叶；烟碱；pH值；水蒸气蒸馏 on between LeavesandtheDistillableNicotine Tobacco StudyRelationship pH 7IA01 HE JUNl，YANG JI．TA01，DUAN JB、J1。LlMⅡN1，LiSHAN．SHANl，U YAN—QtNG2，ZHOU 1 1．YunnanReascend 65006，China ScienceTechnologyCo．Ltd．．Kunming 2．KunmingCigaretteFactory,Kunming650202，China solutionsof49kindsoftobaccoleavesweredistilled．The of total Abstract：Aqueous relationshipspH，the and naturewere nicotinethecontentofnicotineinthefirst250mLcollectedsolutions by pH analyzed results thattherewasno betweenthenicotinecontent showed (naturenicotine)．The regularrelationship andthetobacco of valueofthesolution．The of and pH qualitygrade，theplaceorigin，thepH relationship ofthe thenaturenicotinewas determinationcoefficientwas0．874．Further血an．the positivelinear,the pH was NaOHandHCl．Allthes