Interaction of flavonoids, the naturally occurring antioxidants with different media: A UV–visible spectroscopic study

Effects of surfactant micelles on solubilization and DPPH radical scavenging activity of Rutin

“…Although it is widely recognized that micellar media could influence the reducing action of flavonoids, only a few studies have been devoted towards understanding surfactant-flavonoid interactions [25][26][27][28][29][30][31][32][33]. In the present work, an attempt has been made to explore a correlation between the extent of solubilization of Rutin in single/mixed binary surfactant systems and its antioxidant activity against DPPH in such micro-heterogeneous media, which has been neglected so far.…”

“…The literature reveals [8,9,[25][26][27][28][29][30][31][32][33] that most of the studies undertaken to understand the influence of micellar media on the antioxidant activity of flavonoids and other antioxidants have focussed on a limited number of surfactants without taking into account the effects arising due to changes in nature and size of the head groups and hydrophobicity of surfactant. Moreover, no attempt has been made so far to study antioxidant activity of flavonoids in mixed micellar media.…”

Interactions of short chain phenylalkanoic acids within ionic surfactant micelles in aqueous media

“…[8][9][10][11][12][13][14]18 The ΔA values of solutions of phenylalkanoic acids in the presence of various concentrations of SDS at 25.0 °C are shown in Fig. [8][9][10][11][12][13][14]18 The ΔA values of solutions of phenylalkanoic acids in the presence of various concentrations of SDS at 25.0 °C are shown in Fig.…”

“…This experimental model is useful for studying the interaction of biolo-gical surfaces with the additive molecule. [13][14][15] In the current study, short chain phenylalkanoic acids in aqueous solution of anionic sodium dodecyl sulfate (SDS) and cationic cetyltrimethylammonium bromide (CTAB) surfactants were investigated. These compounds act as agonists for hPPARs (human peroxisome proliferator activated receptors), in particular the human PPARα isoform, and are effective in the treatment of abnormal lipid metabolism, diabetes and other disorders.…”

Spectrophotometric Study of the Stability the Quercetin and Rutin Solutions at Different Acidity of the Medium

“…Двум хромофорным центрам в спектре поглощения флавоноидов соответствуют две полосы поглощения: одна на границе УФ и видимой области в интервале 300-380 нм, которая связана с поглощением света частью молекулы под номером I, другая в УФ-области в интервале 340-280 нм, соответствующая поглощению света кольцом под номером II [14]. Наиболее чувствительной к условиям среды и химическому взаимодействию является полоса, отвечающая части I, изменение спектров которой использовалось для интерпретации процессов, протекающих в растворах.…”