四川会东初烤烟叶外观质量与主要化学成分关系研究

为了明确四川会东烟叶主要化学成分与外观质量的关系,采集四川会东初烤烟叶样品进行化学成分分析和外观质量鉴定。结果表明,四川会东烟叶的颜色、身份、叶宽、单叶重4项外观质量指标在影响烟叶主要化学成分方面起主要作用。四川会东烟叶的身份、油分与烟碱含量呈显著或极显著正相关,颜色与烟叶总氮含量呈极显著正相关,叶宽与烟叶总氮含量呈极显著或显著负相关;身份、色度与烟叶氧化钾含量呈极显著负相关,颜色与烟叶氯离子含量呈极显著正相关,烟叶身份与糖碱比呈显著负相关。烟叶长度却与主要化学成分相关性没有达到显著水平。四川会东烟叶随颜色加深,烟叶烟碱、总氮、氯离子含量显著升高,钾氯比显著下降;随烟叶身份增加,烟叶烟碱含量显著增加,氧化钾含量显著降低;随烟叶油分增加,烟叶烟碱含量显著增加。

Relationship between Appearance Quality and Main Chemical Composition of Flue-cured Tobacco Leaves in Huidong County of Sichuan Province

The relationship between appearance quality and main chemical composition of flue-cured tobacco was studied with 126 leaf samples taken in Huidong County in Sichuan Province. The results showed that main chemical composition contents were mainly influenced by leaf color, body, leaf width, and leaf weight. There was a positive correlation (1% or 5%) among body, oil and nicotine content; a positive correlation (1%) among color and total nitrogen; a negative correlation (1% or 5%) among leaf width and total nitrogen content; a negative correlation (1%) among leaf body, chroma and K₂O content; a positive correlation (1%) among color and Cl content; a negative correlation (1%) among leaf body and ratio of reduced sugar and nicotine. There was no significant correlation between leaf length and main chemical composition. The content of nicotine, total nitrogen and Cl increased and the ratio of K₂O and Cl decreased remarkably with leaf color; the content of nicotine increased and K₂O content decreased remarkably with leaf body thickening; the content of nicotine increased remarkably with increasing leaf oil content.