Determination of polyphenol components of Korean Scutellaria baicalensis Georgi using liquid chromatography–tandem mass spectrometry: Contribution to overall antioxidant activity

The LC/ESI-MSMS Profiles and Biological Potentials of Vitex agnus castus Extracts

“…Peak 15 gave a pseudo molecular ion, [M-H]ˉ, at m/z 582, which yielded ions at m/z 462, 436, 342, 299, 316, 145, and 119. This fragmentation pattern was fully matched by the previously identified N1,N5,N10-tri-p-(E,E,E)-coumaroyl spermidine [28][29][30][31]. Peak 16 at t R 37.12 min was confirmed as apigenin (m/z 269, 149, 117 and commercial apigenin standard).…”

Comprehensive identification of 125 multifarious constituents in Shuang–huang–lian powder injection by HPLC-DAD-ESI-IT-TOF-MS

“…These aglycones were identical to [M-H] − ions of peaks 101, 118, 120, 120, 124, 125, 120 and 123, respectively [20,21]. Moreover, they had similar MS n fragmentation behaviors.…”

Determination of lignans and phenolic components of Schisandra chinensis (Turcz.) Baill. using HPLC-ESI-ToF-MS and HPLC-online TEAC: Contribution of individual components to overall antioxidant activity and comparison with traditional antioxidant assays

“…A general practice to assess the antioxidant capacity of single components is to separate and purify them, which is very laborious. Therefore, more elaborate techniques are required to determine individual antioxidant capacities for individual compounds in a mixture (Seo et al, 2013).…”