Abstract
The ripe edible fruits of jujube,
Zizyphus jujuba Miller (syn.
Z. sativa Gaertner,
Z. vulgaris Lam.) and Christ’s thorn jujube
Zizyphus spina-christi (L.) Willd (Rhamnaceae family) were phytochemically investigated, comparing their quali-quantitative flavonoids profile. Twelve compounds from both methanol extracts have been recognized as quercetin, kaempferol, and phloretin derivatives by means of HPLC/ESI-MS analyses. Six major compounds have been purified by Sephadex LH-20 column chromatography followed by HPLC and were characterized using NMR spectroscopy. One
C-glycoside, 3′,5′-di-
C-
β-
d-glucosylphloretin, was detected in
Z. spina-christi. The quantitative analysis of all compounds was also reported showing a higher content of flavonoids in
Z. jujuba.