Flavone C-Glucosides Responsible for Yellow Pigmentation Induced by Low Temperature in Bracts of Zantedeschia aethiopica

Abstract

We aimed to identify the main compounds responsible for low temperature-induced yellow pigmentation of the bracts of Zantedeschia aethiopica 'Wedding March'. On the basis of the area ratios estimated from absorbance at 400 nm in HPLC analyses, we identified two flavonoids, isoorientin and swertiajaponin, as such compounds. We also identified two additional flavonoids, isovitexin and swertisin, which do not contribute considerably to the yellow pigmentation. Flavonoids of Zantedeschia bracts seem to belong to the class of flavone C-glycosides.

Chemical Constituents From the Fruits of Xanthium strumarium and Their Antitumor Effects

“…Moreover, 5 known compounds 2-6 were obtained from the fruits of X. strumarium and identified as rel-(2α,3β)-7-Omethylcedrusin (2), 14 erythroguaiacylglycerol-β-coniferyl aldehyde ether (3), 2 erythroguaiacylglycerol-8-O-4′-(coniferyl alcohol) ether (4), 2 cirsilineol (5), 15 and isoorientin (6) 16 based on NMR data and literature (Figure 2).…”

Flavonoids in the Species of the Family Araceae: A Review

“…The fraction containing their Cglycosylflavones showed a significant antioxidant/ free-radical scavenging activity (Picerno et al 2003). Six C-glycosylflavones were isolated from Zantedeschia aethiopica, together with other flavonoids, apigenin, luteolin, kaempferol and quercetin, and identified as isoorientin, isovitexin, orientin, swertiajaponin (Figure 48), swertisin (Figure 49) and vitexin (Martens et al 2003, Luzzatto et al 2007, Nakayama et al 2015. Of their C-glycosylflavones, isoorientin and swertiajaponin responded to low temperature-induced yellow pigmentation of the bracts of this species (Nakayama et al 2015).…”

“…Six C-glycosylflavones were isolated from Zantedeschia aethiopica, together with other flavonoids, apigenin, luteolin, kaempferol and quercetin, and identified as isoorientin, isovitexin, orientin, swertiajaponin (Figure 48), swertisin (Figure 49) and vitexin (Martens et al 2003, Luzzatto et al 2007, Nakayama et al 2015. Of their C-glycosylflavones, isoorientin and swertiajaponin responded to low temperature-induced yellow pigmentation of the bracts of this species (Nakayama et al 2015). Moreover, swertisin and isovitexin showed the antimicrobial activity against Pectobacterium carotovorum (Luzzatto et al 2007).…”

“…Schott Anthocyanin: cyanidin 3-rutinoside, pelargonidin 3-rutinoside (st) (Williams et al 1981) Xanthosoma sagittifolium (L.) Schott Flavan and Proanthocyanidin: procyanidin (lf) (Williams et al 1981) Xanthosoma sagittifolium (as Xanthosoma violaceum Schott) (Williams et al 1981, Picerno et al 2003 Anthocyanin: cyanidin 3-rutinoside (lf) (Williams et al 1981), C-Glycosylflavone: apigenin 6-C-glucoside-8-Capiofuranoside, isovitexin, isovitexin 6´´glucoside, isovitexin 4´-rhamnoside, vitexin, vicenin-2 (lf) (Picerno et al 2003) Zantedeschia aethiopica (L.) Spreng. Flavan and Proanthocyanidin: procyanidin (fl), Flavone: apigenin, luteolin (fl), Flavonol: kaempferol, quercetin (fl) (Martens et al, 2003), C-Glycosylflavone: isoorientin, isovitexin, orientin, swertiajaponin, swertisin, vitexin (fl, lf, sp) (Martens et al 2003, Luzzatto et al 2007, Nakayama et al 2015)…”