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贵州烤烟部分化学成分与平衡含水率的关系
牛亚军,叶江平,陈晓明,张长华,梁永江,李章海,周裔彬,杨俊
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(安徽农业大学茶与食品科技学院,合肥 230036;贵州省烟草公司遵义市公司,遵义 563000;中国科学技术大学烟草与健康研究中心,合肥 230052)
摘要:
在温度22℃,相对湿度分别为50%、55%、60%、65%和70%的环境下,测定32种贵州烤烟样品的平衡含水率以及样品中7种常规化学成分(包括烟碱、总糖、还原糖、总氮、氯、钾、蛋白质)和9种糖苷结合态物质的含量(包括糖苷结合态的糠醛、2-乙基己醛、氧代异佛尔酮、3-甲基-1-丁醇、苯乙醇、苯乙酮、4-甲氧基-2-乙烯苯酚、大马酮、十八碳二烯酸)。采用简单相关分析和主成分回归分析等统计方法,研究了测得的16种化学成分与各相对湿度点平衡含水率之间的相关关系。结果表明,烤烟烟叶中总糖、还原糖,糖苷结合态的糠醛、2-乙基己醛等化学成分对平衡含水率有显著影响。通过检测烤烟烟叶部分化学成分含量可以实现其一定温湿度下平衡含水率的预测。
关键词:  烤烟烟叶  平衡含水率  化学成分  相关性分析
DOI:10.13610/j.cnki.1672-352x.20140620.014
基金项目:国家自然科学基金(31271960)和贵州省烟草公司科技项目(201105)共同资助。
Correlation between chemical components and equilibrium moisture content in Guizhou flue-cured tobacco
NIU Yajun,YE Jiangping,CHEN Xiaoming,ZHANG Changhua,LIANG Yongjiang,LI Zhanghai,ZHOU Yibin,YANG Jun
(School of Tea and Food Science, Anhui Agricultural University, Hefei 230036;Zhunyi Tobacco Company of Guizhou Province, Zunyi 563000;Research Center of Tobacco and Health, University of Science and Technology of China, Hefei 230052)
Abstract:
In this paper, we determined the contents of equilibrium moisture, seven conventional chemical components (including nicotine, total sugar, reducing sugar, total nitrogen, chlorine, potassium and protein) and nine conjugated glycosides (including conjugated glycosides of furfural, 2-ethyl hexanal, oxo-isophorone, 3-methyl-1- butanol, benzyl alcohol, acetophenone, 4-methoxy-2-vinylphenol, damascenone and octadecadienoic acid) in 32 flue-cured tobacco samples from Guizhou Province. These leaf samples were oven-dried at 22℃ 50%, 55%, 60%, 65% and 70% of relative humidities, respectively. Relationships between of 16 chemical components and equilibrium moisture under different relative humidity conditions were studied using simple correlation analysis and principal component regression analysis. The results showed that total sugar, reducing sugar and conjugated glycosides of furfural and 2-ethyl hexanal in flue-cured tobacco leaves significantly affect the equilibrium moisture contents in Guizhou flue-cured tobacco.
Key words:  flue-cured tobacco leaf  equilibrium moisture content  chemical component  correlation analysis

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