English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The stems of  Dendrobium officinale  Kimura et Migo (Dendrobii Officinalis Caulis) have a high medicinal value as a traditional Chinese medicine (TCM). Because of the limited supply,  D. officinale  is a high priced TCM, and therefore adulterants are commonly found in the herbal market. The dried stems of a closely related  Dendrobium  species,  Dendrobium devonianum  Paxt., are commonly used as the substitute; however, there is no effective method to distinguish the two  Dendrobium  species. Here, a high performance liquid chromatography (HPLC) method was successfully developed and applied to differentiate  D. officinale  and  D. devonianum  by comparing the chromatograms according to the characteristic peaks. A HPLC coupled with electrospray ionization multistage mass spectrometry (HPLC-ESI-MS) method was further applied for structural elucidation of 15 flavonoids, 5 phenolic acids, and 1 lignan in  D. officinale . Among these flavonoids, 4 flavonoid C-glycosides were firstly reported in  D. officinale , and violanthin and isoviolanthin were identified to be specific for  D. officinale  compared with  D. devonianum . Then, two representative components were used as chemical markers. A rapid and reliable high performance thin layer chromatography (HPTLC) method was applied in distinguishing  D. officinale  from  D. devonianum . The results of this work have demonstrated that these developed analytical methods can be used to discriminate  D. officinale  and  D. devonianum  effectively and conveniently.

Chemical Differentiation of Dendrobium officinale and Dendrobium devonianum by Using HPLC Fingerprints, HPLC-ESI-MS, and HPTLC Analyses