Improved water solubility of quercetin by preparing complexation with cyclodextrins in binary solvent

Aqueous Solubility Enhancement of Some Flavones by Complexation with Cyclodextrins

The inclusion complexes of cyclodextrins (CDs) with flavones in aqueous solution were investigated by phase solubility measurements. The effect of β-cyclodextrin (β-CD), heptakis (2,6-di-O-methyl) β-cyclodextrin (DM-β-CD) and 2-hydroxypropyl-β-cyclodextrin (HP-β-CD) on the aqueous solubility of three flavones, namely, chrysin, apigenin and luteolin was investigated, respectively. Solubility enh...

Complexation of quercetin with three kinds of cyclodextrins: an antioxidant study.

The slightly water-soluble flavonoid quercetin (QUE) and its inclusion with either beta-cyclodextrin (betaCD), hydroxypropyl-beta-cyclodextrin (HP-betaCD) or sulfobutyl ether-beta-cyclodextrin (SBE-betaCD) were investigated. The stoichiometric ratios and stability constants describing the extent of formation of the complexes have been determined by phase-solubility measurements; in all cases ty...

Solvent Effects on Complexation of Dioxovanadium (V) with Glycine in Methanol-Water Mixtures

The formation constants of the species formed in the systems fr + glycine + dioxovanadium(V) + and H+ + glycine have been determined in aqueous solutions of methanol at 25 °C and constant ionicstrength, using spectrophotometric and potentiometric techniques. It was shown thatdioxovanadium(V) forms two mononuclear 1 : land 1:2 complexes with glycine. The formationconstants in various media were ...

performance of solubility models for prediction of acetaminophen solubility in binary and ternary solvent mixtures of ethanol, water and glycerin

Complexation of olive oil antioxidant with cyclodextrins

Oleuropein (OLE) is a major constituent of the olive leaf and green olives (Olea europaea). It has antioxidant and therapeutic properties and is valued as a medicinal component. The molecule is a complex phenolic compound constituted by a heterosidic ester of the elenolic acid and dihydroxy ethanol. This work concerns the determination of the inclusion complex constants between OLE and cyclodex...