TABLE 3.

A summary of metabolomic studies in D. officinale.

Materials	Treatments or conditions	Method	References
Stems	Three different substrates	UPLC-MS/MS	Zuo et al., 2020
Protocorm-like bodies	Precursors and methyl jasmonate	GC-MS, LC-MS	Jiao et al., 2018
Stems	Different growth years of two species	GC-MS	Jin et al., 2016
Stems	UV-B treatment	UPLC-MS/MS	Chen Y. et al., 2020
Caulis	Two Dendrobium plants	LC-MS	Song et al., 2020
Leaves and stems	–	LC-ESI-MS/MS	Cao et al., 2019
Stems	Different regions	GC–MS	Hu et al., 2020