First characterisation of flavonoid- and diarylheptanoid-type antioxidant phenolics in Corylus maxima by HPLC-DAD-ESI-MS

Characterization of antioxidant phenolics in Syringa vulgaris L. flowers and fruits by HPLC‐DAD‐ESI‐MS

“…It was also observed that all the extracts and the investigated phenolics acted more strongly against ABTS free radicals. These results are in accordance with previous literature data claiming that hydrophilic antioxidants, such as phenolics, were better reflected by ABTS than DPPH assay (Prior et al ., ; Riethmüller et al ., ).…”

Quali-quantitative analysis of the phenolic fraction of the flowers of Corylus avellana, source of the Italian PGI product “Nocciola di Giffoni”: Isolation of antioxidant diarylheptanoids

“…Other studies on Corylus spp. focused on the antioxidant activity and chemical composition of the leaves, bark, catkins and involucre of Corylus colurna, led to the isolation of hydroxycinnamic acid derivatives, flavonoids and diarylheptanoids (Riethmuller et al, 2014); from the leaves of Corylus maxima antioxidant flavonoids and diarylheptanoids have been isolated (Riethmuller et al, 2015).…”

Indirect identification of antioxidants in Polygalae Radix through their reaction with 2,2-diphenyl-1-picrylhydrazyl and subsequent HPLC–ESI-Q-TOF-MS/MS

“…Additionally, the activities of some natural antioxidants are often decreased during the isolation and purification processes due to their decomposition. LC-MS coupled with DPPH [8][9][10][11][12][13] or ABTS [14][15][16] assay methods have been used for the identification of antioxidants in Chinese medicinal herbs. For DPPH assay, the hypothesis is that upon reaction with DPPH.…”