Analysis and stability of the constituents of Curcuma longa and Harpagophytum procumbens tinctures by HPLC-DAD and HPLC-ESI-MS

Phenolic Distribution in Liquid Preparations of Vaccinium myrtillus L. and Vaccinium vitis idaea L.

“…To control these markers over time, several histograms were prepared both with single constituents and with the sum of each chemical class. Recent findings from analogous studies carried out on two tinctures applying an accelerated ageing protocol pointed out a rapid degradation of the curcuminoids, but on the other hand high stability of the iridoid derivatives, in the tincture of Harpagophytum procumbens (Karioti et al ., ).…”

Devil's Claw—A review of the ethnobotany, phytochemistry and biological activity of Harpagophytum procumbens

“…After testing for anti-inflammatory activity it was noted that hydroxylation at C-24 may increase activity and that the exo-double bond may be a prerequisite for good activity (Qi et al, 2010). HPLC-DAD coupled to ESI-MS was used by Karioti et al (2011) to analyse constituents in H. procumbens tinctures. A novel natural compound named methoxypagoside was isolated and decaffeoylverbascoside was reported for the first time from H. procumbens.…”

Therapeutic potential of phenylethanoid glycosides: A systematic review

“…187 PhGs were reported to be stable in tincture with 80% left after 6 months, probably because of the weak acid medium in tincture. 188…”