Comparison of flavonoid profiles of Agauria salicifolia (Ericaceae) by liquid chromatography-UV diode array detection–electrospray ionisation mass spectrometry

Comparative analysis of total phenolic content, antioxidant activity, and flavonoids profile of fruits from two varieties of Brazilian cherry (Eugenia uniflora L.) throughout the fruit developmental stages

“…Peaks 5 and 6 were respectively designated quercetin hexoside (MW = 464), comprising quercetin (302) and hexose (162), and quercetin pentoside (MW = 434), comprising quercetin (302) and pentose (132). Both quercetin glycosides have been identified in a wide range of plants, including blackcurrant pomace (Sójka et al, 2009), mango peels (Schieber, Berardini, & Carle, 2003), Agauria salicifolia leaves (Lhuillier et al, 2007), rosa hip flesh (Hvattum, 2002), Q. ilex L. leaves (Brossa et al, 2009), cranberry fruit , pear skins (Lin & Harnly, 2008), cashew apple skin and flesh (Brito et al, 2007;MichodjehounMestres et al, 2009), and strawberry fruit (Simirgiotis et al, 2009). Peak 7 was designated quercetin deoxyhexoside (MW = 448), comprising quercetin (302) and deoxyhexose (146), and the most probable flavonoid glycoside corresponding to peak 7 is quercetin 3-O-rhamnoside (or quercitrin), as previously reported by SchmedaHirschmann et al (1987) for leaves of Brazilian cherry.…”

A RP‐HPLC‐DAD‐APCI/MSD method for the characterisation of medicinal Ericaceae used by the Eeyou Istchee Cree First Nations

“…Nazemiyeh et al (2008) analysed fi ve fl avonoids in the leaves of Erica arborea by RP-HPLC-DAD and determined their antioxidant capacity while Komarova et al (2009) performed quantitative HPLC-DAD analysis of myricetin, quercetin and dihydroquercetin and rutin in 70% ethanol extracts of leaves and stems of Rhododendron adamsii. Along with a study by Lhuillier et al (2007) on Agauria salicifolia, our previous work with V. angustifolium (Harris et al, 2007) is among few phytoanalytical studies on leaf phenolics in Ericaceae.…”

“…In addition, due to the therapeutic, edible and ornamental potentials of a large number of Ericaceae species, most of the phytoanalytical work has been on the phenolics, anthocyanins and tannins present in the fruits while the leaves have been poorly studied (Gu et al, 2002;Wu and Prior, 2005;Lätti et al, 2009). Among a few studies on Ericaceae leaves, Lhuillier et al (2007) attempted the analysis of phenolics among two populations of Agauria salicifolia collected in Madagascar using HPLC-DAD-ESI/MS/MS. Authors achieved the characterisation of 14 fl avonoids in 50 min in the leaves of two populations.…”

Comparison of the constituents of Apocynum venetum and acidified Apocynum venetum by liquid chromatography–UV diode array detection–electrospray ionisation mass spectrometry

“…NMR measurements (Table 3) were mainly used to confirm the aglycone unit and the glycosylation site on the aglycone. Analyses of the chemical shifts, signal multiplicities, absolute values of the coupling constants and their magnitudes in the 1 H NMR spectrum as well as 13 C NMR data (Table 3) indicate the presence of one arabinosyl residue, and confirmed by comparison with existing literature data (Lhuillier et al, 2007). Peak 8 was identified as avicularin.…”