The bioactive compounds and antioxidant activity of aronia leaves at different stages of maturity were identified and evaluated. Young and old leaves were approximately 2 months of age and 4 months of age, respectively. The young leaves contained more polyphenols and flavonoids than the old leaves. Three phenolic compounds (i.e., chlorogenic acid, p-coumaric acid, and rutin) were detected by HP...

Moringa oleifera, Lam. (Moringaceae) is grown world-wide in the tropics and sub-tropics of Asia and Africa and contains abundant various nutrients. This study describes the effect of different parts (leaf, stem and stalk) and seasons (summer and winter) on the chemical compositions and antioxidant activity of M. oleifera grown in Taiwan. The results showed that the winter samples of Moringa had...

Organophosphorous compounds are widely used as biologically active agents. Two well-known pesticides belong to this group: dibutyl 1-butylamino-1cyclohexanephosphonate (DBBC) and 2,4-dichlorophenoxyacetic acid (2,4-D) [1, 2]. Their oxidative properties were studied and compared with those of diethyl 9-butylamino-9-fluorenephosphonate (DEBF). All these compounds also interact with biological and...

Phenolic compounds are a large group of phytochemicals widespread in the plant kingdom. Depending on their structure they can be classified into simple phenols, phenolic acids, hydroxycinnamic acid derivatives and flavonoids. Phenolic compounds have received considerable attention for being potentially protective factors against cancer and heart diseases, in part because of their potent antioxi...

One new iridoid glycoside and five known flavonol glycosides have been isolated from the leaves of Morinda citrifolia. The new iridoid exists as an epimeric mixture in solution. Complete assignments of the proton and carbon chemical shifts for the individual epimers were accomplished on the basis of high-resolution 1D and 2D NMR data. Their antioxidative activities were measured. All of these c...

Seven phenolic compounds, including a new phenylethanoid glycoside, were isolated from the ethyl acetate fraction of an aqueous ethanol extract of Plantago Herb (whole part of Plantago asiatica L.), which showed significant antioxidative activity. The new compound was characterized as 2-(3,4-dihydroxyphenyl)ethyl 3-O-β-D-allopyranosyl-6-O-caffeoyl-β-D-glucopyranoside on the basis of spectral an...

tobacco smoke contains numerous compounds, many ‎of which are oxidants and capable of producing free radical and enhancing ‎the oxidative stress. the aim of this study was to investigate the effect of cigarette smoking on the erythrocyte antioxidative enzyme activities and the plasma ‎concentration of their cofactors. ‎sixty eight healthy men were enrolled, 32 of whom had never smoked and 36 ha...

Abstract: Background: Ajos sacha is a shrubby herb and has attracted scientists’ attention due to its antioxidative, antineoplastic, larvicidal, antibacterial properties. Hence, assessed in vitro vivo diabetes protective Materials Methods: The methodology started with the quantitative phytochemical estimation of ethanolic extract Adenocalymma alliaceum (EEAA). Then, was studied for cytotoxicity...

Glucosinolates (GLS), antioxidative compounds, total radical scavenging activities (TRSAs) and proteins of white cabbage samples derived from different regions of Europe, collected in the spring and autumn, were studied. Glucobrassicin and sinigrin were the dominating GLS in all analyzed cabbage samples. Depending on origin, these two GLS accounted for 30% to 70% of the total. The total GLS con...

O xidation processes are essential in normal cell metabolism. Free radicals, i.e. reactive oxygen and nitrogen compounds, are formed continuously. They participate in metabolic and cell signalling pathways, in spite of their potentially deleterious effects. A system of endogenous anti-oxidative compounds and systems operates to control strictly the concentrations and actions of free radicals. D...