摘要
为分析不同部位烟叶Brabender水分测定仪检测烟叶水分检测结果与YC/T31检测结果差异的原因,采用差热—热重分析(TG-DTA)技术对不同部位烟叶进行测试,并采用正交优化技术进行不同部位烟叶Brabender水分测定仪检测参数优化,建立参数标定模式。结果表明:在Brabender水分测定仪检测烟叶水分时,较高温度下进行烟叶烘烤,不仅烟叶的自由水、结合水被蒸发出来,部分小分子挥发性物质也被蒸出;Brabender水分检测仪检测参数标定模式:因子水平选择、正交试验以及效果评定,评定周期为3个小时。
The reason of difference result of the moisture content in tobacco leaves from different parts which use Brabender Moisture Meter and YC/T 31 industry standard were analysed by thermogravimetry-differential thermal analysis(TG-DTA).The different parts of the tobacco Brabender moisture analyzer detection parameters obtained by orthogonal optimization techniques,and parameters calibration mode was established.. It was shown that during air curing on Brabender Mositure Meter, when the tobacco leaves were heated to an elevated temperature, except for free moisture and bound moisture, some small molecular volatile substance evaporates as well. Orthogonal optimisation was applied to these parameters on Brabender Mositure meter and then a parameter optimisation mode was established. This mode consisted of factor level selection, orthogonal test and effect assessment the period of which was 3 hours.
引文
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