The following compounds of different phenolic groups were identified in the investigated ethanol extracts: procyanidin B1, (+)-catechin, chlorogenic acid, procyanidin B2, (-)-epicatechin, rutin, hyperoside, isoquercitrin, avicularin,
quercitrin, and phloridzin.
The three standard solutions of
quercitrin, 3-hydroxyphloridzin, and phloridzin were prepared in methanol at the concentrations of 486, 466, and 4500 [micro]g x m[L.sup.-1] and stored at 4[degrees]C, respectively.
The authors of that study demonstrated that rutin along with
quercitrin was one of the major compounds in apple leaves [49].
Two marker compounds, hyperoside and
quercitrin, were purchased from Sigma-Aldrich (St.
Quercitrin: an antileishmanial flavonoid glycoside from Kalanchoe pinnata.
Hyperoside, isoquercitrin and
quercitrin and tiliroside were purchased from Roth (Karlsruhe, Germany).
To our knowledge, other phenolic compounds such as Gossypol,
Quercitrin occurring in fruits and vegetables have been found to induce pathological changes in testicular cells [17-19].
Additionally, 6 "-O-Acetyl Quercetin 3-O-[beta]-D-alloside,
Quercitrin, Quercetin compounds have been reported to be effective against Plasmodium falsiparum (2).
In vivo
quercitrin anti-inflammatory effect involves release of quercetin, which inhibits inflammation through down-regulation of the NF-kappaB pathway.
(9) The leaves contain triterpene ixorene, (10) ixorapeptide I, ixorapeptide II, (11) and
quercitrin, (12) and have cardioprotective, (13) antinociceptive, (14) antioxidant, (15) antidiarrhoeal, (16) antiasthmatic, (17) hypoglycaemic, and hypolipidemic activity, (18) and the roots show antioxidant activity.
In addition, it has different phytochemicals like flavonoides,
quercitrin and isoquercitrin.
These are naphthodianthrones (hypericin, pseudohypercin), phloroglucinols (hyperforin, adipherforin), flavonoids (rutin, hyperoside,
quercitrin) xanthones and tannins.