木立芦荟不同叶龄叶的解剖结构和芦荟素含量的测定

Structural analysis and aloin determination in leaves of Aloe arborescens at different leaf age

目的 旨在揭示芦荟素在不同叶龄芦荟叶中的含量及其差异的原因。方法 用高效液相色谱法测定芦荟素的含量。用半薄切片法研究叶的解剖结构。结果 在同一株植物内 ,从上到下随着叶龄的增大 ,叶片维管束中的大型薄壁细胞逐渐萎缩 ,芦荟素的含量逐渐降低。

Object To explore the content of aloin in the leaves of Aloe arborescens Mill at different leaf age and its difference reason Methods The aloin content was determined by HPLC and anatomical structure of the leaves was studied with semi thin section Results The aloin content declines and the volume of large parenchymatous cell in vascular bundle atrophies from top to bottom with leaf growth in the same plant Conclusion The above results may provide references of the best time for collecting the leaves of A arborescens