Objective: The present study was aimed to find out antioxidant property of methanolic and aqueous extracts of Aegle tamilnadensis Abdul Kader (Rutaceae) leaf. Methods: The phenolic and flavanoid contents of methanolic and aqueous extract were determined. The antioxidant potential of the leaf samples was evaluated by using five in vitro assays such as 2, 2-diphenyl-1-picrylhydrazyl (DPPH), hydro...

Maillard reaction (MR) was carried out in L-lysine-D-glucose (Lys-Glu) model system heated at 120°C for 0 to 10 h without pH control. Optical property (UV-Vis absorbance and fluorescence) development of MR was monitored. Antioxidant activity of maillard reaction products (MRPs) was investigated by a series of in vitro tests. The UV-Vis absorbance zero and first-order derivative spectrophotometr...

Aim of study is to get a further insight on the contribution of the structural features to the radical scavenging potential of shikonin and its ester derivatives. The radical scavenging activity of shikonin and its ester derivatives have been studied by using density functional theory. The hydrogen bond property of the studied structures has been investigated by using the Atoms in Molecules (AI...

Aims: To evaluate the anti-inflammatory and antioxidant activity of methanolic root extract of onosma hispidum (Ratanjot) by in-vitro methods. Methods: DPPH free radical and ABTS radical scavenging activity estimation with total phenolic and flavonoid content methods were used to evaluate antioxidant activity while egg albumin denaturation method and HRBC membrane stabilization methods were use...

Chemical modification of chitosan is increasingly studied for its potential of providing new applications of chitosan. Here, a group of novel chitosan quaternary ammonium derivatives containing pyridine or amino-pyridine were designed and successfully synthesized through chemical modification of chitosan. Pyridine and amino-pyridine were used as functional groups to improve the antifungal activ...

A free radical scavenging activity is an important property of natural dietary compounds, caffeine and caffeic acid compound widely present in many fruits, vegetables and coffee. The present study focused on determining the antioxidant activity of caffeine, caffeic acid and (caffeine + caffeic acid) through invitro antioxidant experiments. Invitro lipid peroxidtion, 1,1diphenyl-2-picryl-hydrazy...

Promethazine is known to have protective activity in relation to CCl4-induced liver necrosis. This hepatoprotective property has been investigated with regard to the free radical scavenging and antioxidant properties of promethazine using isolated hepatocytes and microsomal suspensions. CCl4 is activated in both systems to free radical metabolites that bind covalently to lipid and protein, and ...

Lucigenin and paraquat are similar in that each can be taken into Escherichia coli and can then mediate O2.- production by cycles of univalent reduction, to the corresponding monocation radical, followed by autoxidation. Thus, both compounds caused induction of enzymes that are regulated by the soxRS regulon. The lucigenin cation radical has the added property of reacting with O2.-, in a radica...