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烤烟叶片稳定同位素与致香物质关系的研究
舒俊生,姚忠达,郭东锋
0
(安徽中烟工业有限责任公司技术中心,合肥230088)
摘要:
为了解烤烟叶片中稳定同位素与烟叶致香物质间的相互关系,对烟叶中稳定同位素丰度与致香物质间进行相关分析。结果表明:1)碳稳定同位素丰度在烟叶中变异较小,而氮稳定同位素丰度则存在广泛的变异,碳稳定同位素与氮稳定同位素间存在显著正相关关系,而氮稳定同位素与其他化学成分相关性不强;2)烟叶中碳稳定同位素与酯类及其降解产物、新植二烯呈极显著的负相关关系,且碳同位素与致香物质成分间存在不同程度的相关性,而氮稳定同位素丰度与致香物质间相关关系不显著;3)典型相关分析表明,随着烟叶中氮同位素、碳氮比的增加,酯类及其降解产物呈现降低的趋势,非酶棕色化产物呈现上升的变化趋势,表明氮同位素、碳氮比与酯类及其降解产物和非酶棕色化产物之间有着密切的关系。说明烟叶中稳定同位素与致香物质间存在密切的关系,烟叶中不同丰度同位素对致香物质的含量有一定的影响。
关键词:  叶片  稳定同位素  致香物质
DOI:
投稿时间:2012-12-17
基金项目:安徽省高等学校省级自然科学研究项目(KJ2011Z306)资助。
Relationship between stable isotope and flavor components in flue-cured tobacco leaf
SHU Jun-sheng,YAO Zhong-da,GUO Dong-feng
(Technology Center of Anhui Cigarette Industrial Co. Ltd., Hefei 230088)
Abstract:
In this paper, we focused on the relationship between stable isotope and fragrance substance in flue-cured tobacco by math statistic methods, and the conclusions were as follows. 1) There is low variation of δ13C stable isotope, on the contrary,δ15N stable isotope indicates high variation from the samples. The correlation denotes significant level at 0.05 betweenδ13C and δ15N stable isotope, at 0.01 betweenδ13C stable isotope and total nitrogen. 2) The results denote significant negative correlation level at 0.01 between abundance ofδ13C stable isotope and esters and its degradation products, negative correlation level at 0.01 betweenδ13C stable isotope and neophytadiene; meanwhile, there are different degrees of correlation relationships between abundance ofδ13C stable isotope and fragrance substance, but the correlation between abundance of δ15N stable isotope and fragrance substance is not significant. 3) The results from canonical correlation analysis show that the content of esters and its degradation products would decrease along with the abundance of δ15N stable isotope and C/N. The conclusion could be confirmed that there should be certain relationship between stable isotope and fragrance substance, so the fragrance substance may be influenced by the abundance of stable isotopes.
Key words:  tobacco leaf  stable isotope  flavor component

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