B2F

The changes of the physical properties , chemical compositions and smoking quality of Henan redried strips , B2F and C3F , during aging were studied .

研究了陈化过程中河南复烤片烟B2F和C3F物理性状、化学成分和吸味品质的变化。

It was concluded that aging of redried flue-cured Yunnan strips B2F was accelerated by casing , therefore the tobacco should be used timely when it was in its optimum status .

结论是加料加快了云南烤烟复烤烟片B2F的自然陈化速度，致使其感官质量出现下降的时间提前，因此，加料复烤B2F应在最佳陈化时间区间内尽快使用。

This study was conducted for chemical components of four sections ( leaf tip , leaf center , leaf base and leaf margin ) flue-cured tobacco samples with representative grades ( B2F , C3F , X2F ) of 3 stalk positions from 9 ecological tobacco-growing areas .

对9个生态烟区3个部位烤烟样品的4个区位（叶尖、叶中、叶基和叶缘）的主要化学成分进行了分析研究。