烟叶主脉不同位置烟梗挥发性香味物质的变化

Variation of volatile aroma compounds content in different sections of tobacco stem

研究烟叶主脉不同位置烟梗挥发性香味物质的变化情况,为烟梗的差异化加工和分类使用提供参考依据。将每一片初烤烟叶中的烟梗主脉完全剥离出来,并从梗基到梗尖平均分成6段(YG1~YG6),分别测定每一段烟梗的挥发性有机酸和挥发性致香物质。利用单因素方差分析研究不同位置烟梗各单项化学物质含量的差异性。利用回归分析研究不同位置烟梗挥发性有机酸和挥发性致香物质总量的变化趋势。结果表明:对于同一烟叶中的烟梗,从梗基到梗尖,各单项挥发性化学物质含量均存在显著性差异和规律性变化趋势;挥发性有机酸和挥发性致香物质总量均呈先降低后升高的抛物线型变化趋势。

Data references were provided for tobacco stem differential processing and use. Main veins of tobacco leaves were stripped and divided into six segments on average from leaf base to tip（YG1~YG6）. Volatile aroma compounds content of each segment were investigated. Single factor variance analysis and regression analysis were conducted. Results showed that, from leaf base to tip of tobacco stem, total contents of volatile organic acids and volatile aroma compounds presented an inverse parabolic trend.