贵州农业科学2025，Vol.53Issue(3)：17-24,8.DOI:10.3969/j.issn.1001-3601.2025.03.003
不同形态烟梗常规化学成分及硝酸根和氨基酸含量的差异
Differences in Conventional Chemical Component,Nitrate and Amino Acid Content of Different Shapes of Tobacco Stems
摘要
Abstract
[Objective]The differences in conventional chemical component,nitrate and amino acid contents of different shapes of tobacco stems(stem head,thick stem and fine stem)were explored to provide the references for the classification and utilization of different tobacco stems.[Method]The main vein tobacco stems of middle and upper primary flue-cured tobacco from Fujian Province were cut into 8 sections from base to tip.The long tobacco stems(≥20 mm)of redried middle leaves from Sichuan,Liaoning and Jiangxi were divided into three types of stem head leaf stalk,thick stem(stem diameter≥3 mm)and fine stem(stem diameter＜3 mm)according to their shapes.The conventional chemical component,nitrate and free amino acid contents of all shapes of tobacco stems were determined.The differences of chemical component content in different shapes of tobacco stems were analyzed.[Result]The nicotine,total nitrogen,chlorine and free amino acid contents of main vein tobacco stems in the middle leaves were lower than those in tobacco stems of upper leaves in the same growing area(Fujian),the total sugar,reducing sugar and nitrate were higher than those in tobacco stems of upper leaves.The variation rules of chemical component in different shapes of stems from middle and upper leaves were basically consistent.The nicotine,total nitrogen and free amino acid contents from the base to the tip of stems decreased first and then slightly increased,the potassium contents increased first and then decreased,and the chlorine and nitrate contents decreased.The chemical composition of stem head in middle leaves from different flue-cured tobacco-growing areas(Sichuan,Liaoning,Jiangxi)was significantly different from that of thick stems and fine stems.The nicotine,total nitrogen,total sugar,reducing sugar,chlorine,nitrate,free amino acid content of stem head were relatively higher,and potassium content was lower.The nicotine,total nitrogen,chlorine,free amino acid and potassium contents in stem head were significantly different from those in thick stems and fine stems.[Conclusion]The nicotine,total nitrogen,chlorine and free amino acid contents of main vein tobacco stem in the middle leaves from the same growing area are lower than those of tobacco stems in upper leaves,the total sugar,reducing sugar and nitrate are higher than those of tobacco stems of upper leaves.The nicotine,total nitrogen and free amino acid contents in middle and upper leaves from the base to the tip of the stem decrease first and then slightly increase,the potassium contents increase first and then decrease,and the chlorine and nitrate contents decrease.The chemical component of tobacco stems from different growing areas shows the nicotine,total nitrogen,total sugar,chlorine and free amino acid contents in stem head are higher than those in thick stems and fine stems,while potassium content in stem head is lower than that in thick stems and fine stems.关键词
烟梗/形态/化学成分/硝酸根/游离氨基酸Key words
tobacco stem/shape/chemical component/nitrate/free amino acids分类
轻工纺织引用本文复制引用
沈晗,徐玮杰,弯润其,王先颖,孙凯健,戴泽元,张鑫,陈斌,汤朝起..不同形态烟梗常规化学成分及硝酸根和氨基酸含量的差异[J].贵州农业科学,2025,53(3):17-24,8.基金项目
上海烟草集团有限责任公司科技项目"梗丝综合性能提升技术研究"(K2023-1-004P) （K2023-1-004P）
