烟草叶片中自由水含量测定方法比较分析

Comparison of Free Water Measurement Methods in Tobacco Leaves

摘要: 比较分析了烟草叶片中自由水含量测定的两种方法—阿贝折射仪法和称重法。结果表明，两种方法测定结果差异不显著。其中，称重法测定的变异幅度和相对变异程度较小，其测定结果代表性更好。确定了称重法和阿贝折射仪法适宜的加糖液量和浸泡时间，两种方法均以加入烟草叶片质量6倍以上的蔗糖溶液并浸泡6 h以上处理比较理想。

Abstract: Two methods including Abbe Refractometer method and weighing method for measuring free water in tobacco leaves were compared in this study.. The results showed that no significant difference between the two methods was observed, with less variation of percent free water and more representitive results in weighing method. In addition, the appropriate amount of sucrose solution and soaking time of the two methods were also determined, indicating that adding 6 times more sucrose solution than tobacco leaf weight and soaking over 6 hours were suitable for the measurement of free water in tobacco leaves.