Abstract
Summary: Medicinal bark refers to structures outside the vascular cambium of stems, branches and roots of gymnospermous and dicotyledonous plants that are used as medicinal materials; bark is an important type of Chinese herbal medicine. However, identification of the species from which the bark comes can be very difficult, especially when the bark is dried and sliced. In our previous studies, we have found that fluorescence microscopy is a powerful tool for the identification of easily confused Chinese herbal medicines, powdered Chinese herbal medicines and decoction dregs. To establish the fluorescent characteristics by which medicinal barks can be identified, for ensuring their safe and effective use, a systematic microscopic investigation by normal light and fluorescence microscope was carried out on transverse section samples of 11 medicinal barks commonly used in China. Specifically, the fluorescent characteristics of mechanical tissues, including stone cells and fibres as well as secretory tissues, have been observed. The microscopic features of medicinal bark are here systematically and comparatively described and illustrated. Under the fluorescence microscope, various tissues emitted fluorescence of different colours, and we found that both the colours and the intensity can be used to distinguish and identify these barks.
Original language | English |
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Pages (from-to) | 6-22 |
Number of pages | 17 |
Journal | Journal of Microscopy |
Volume | 256 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1 Oct 2014 |
Scopus Subject Areas
- Pathology and Forensic Medicine
- Histology
User-Defined Keywords
- Fibres
- Fluorescence microscopy
- Medicinal bark
- Normal light microscopy
- Secretory tissues
- Stone cells