Evaluation of Chemical Constituents and Important Mechanism of Pharmacological Biology in Dendrobium Plants

Table 2

Polysaccharides DDP1-1, DDP2-1, and DDP3-1 isolated from D.  denneanum and DNP1-1 DNP2-1, DNP3-1, and DNP4-2 isolated from D.  nobile.

	ABTS radicals	Hydroxyl radicals	DPPH radicals
D.  denneanum
DDP1-1	(LW)	(LW)	(LW)
DDP2-1	(LW)	(HH)	(HH)
DDP3-1	(LW)	(LW)	(LW)
D.  nobile
DNP1-1	(LW)	(LW)	(LW)
DNP2-1	(LW)	(LW)	(LW)
DNP3-1	(LW)	(LW)	(LW)
DNP4-2	(HH)	(HH)	(HH)

Notes: Low (LW); High (HH).
Up the table: the antioxidant effect of DNP4-2 on ABTS, hydroxyl, and DPPH free radicals, suggesting the levels of DNP4-2 higher than DNP1-1, DNP2-1, and DNP3-1; however, the antioxidant effects of DDP2-1 on hydroxyl and DPPH free radicals were higher than ABTS free radicals. Moreover, the DDP1-1 and DDP 3-1 on inhibitory effect were low than other compounds. We believe that the focus on antioxidant potential of DNP4-2 and DDP2-1 structures in near future.