The influence of phenol and its derivatives on the kinetics of oxidation of aryldiamines (indicator-substrates) catalyzed by novel plant peroxidase-cationic peanut peroxidase-was studied. The character of influence of phenols on the kinetics of enzymatic oxidation of benzidine, o-dianisidine, and 3,3',5,5'-tetramethylbenzidine (TMB) with hydrogen peroxide was found to depend on a correlation be...

1H- and 19F-NMR measurements of spin-lattice (T1) and spin-spin (T2) relaxationtimes and diffusion ordered spectroscopy (DOSY) were applied to investigate the association of nonsubstituted (phenol (P)) and halogen-substituted (2,4-dichlorophenol (DCP); 2,4,6-trichlorophenol (TCP), and 2,4,6-trifluorophenol (TFP) phenols with a dissolved humic acid (HA). T1 and T2 values for both 1H and 19F in p...

The genus Glycyrrhiza consists of about 30 species in which G. glabra, G. uralensis, G. inflata, G. aspera, G. korshinskyi, and G. eurycarpa are generally recognized as licorice because of their sweet taste. Except G. korshinskyi, we examined isoprenoid-substituted phenols of these licorices. Each plant could be characterized by some isoprenoid phenols. We also investigated the biological activ...

Human studies indicate that consumption of olive oil is associated with decreased mortality, reduced cardiovascular risk and improved cognitive function in the elderly. Many of these benefits are thought to be due to the phenolic content of olive oil. In support of this, intervention studies in humans indicate that olive oil phenols protect blood lipids from oxidation and improve blood paramete...

Background and objectives: Cardiospermum halicacabum L. is a climber plant of Sapindaceae family with certain medicinal properties that have made it to be used traditionally in different systems of medicine such as Ayurveda, Homeopathy and Unani medicine. Literature survey has revealed the reports about some investigations but references were not available about the seeds of C. hal...

In the present work, a two-step sequential method employing copper sulfate (CuSO4) and Pseudomonas putida as treatment materials was investigated to remove color and phenols from paper industry wastewater. The wastewater was first subjected to precipitation treatment using CuSO4, which removed 96% and 52% of initial color and phenols, respectively. However, this treatment induced 65 mgL of resi...

In 1915, Folin and Denisb described a method for the determination of free and conjugated phenols in the urine, using a phosphotungstic-phosphomolybdic reagent, which, in the presence of sodium carbonate, gives a color reaction with phenols. The formula for the color reagent was published in 1912,2 at the same time as the uric acid reagent. Later, Folin and Denis applied the method to phenols i...

A glassy carbon electrode (GCE) coated with a graphene/polymer film was fabricated for rapid determination of phenols in aqueous solutions. The electrochemical behavior of different phenols at the graphene/polymer-coated GCE was also investigated. In PBS buffer solution with a pH of 6.5, hydroquinone exhibits a well-defined reduction peak at the modified GCE. Based on this, an electrochemical m...

In this work, volatile organic compounds (VOCs) in the ambient air of a secondary fiber paper mill were analyzed. For the sake of studying pollution comprehensively, four sites in the paper mill were analyzed and active sampling methods were used. Desorption was carried out with two solvents, carbon disulfide and dichloromethane. The compositions of VOCs were determined by gas chromatography-ma...

this study was designed to examine the in vitro antioxidant activities and total phenolic contents of the methanolic extracts from male inflorescence of salix aegyptiaca l. grown in iran. the methanolic extract (me) and its three fractions including water (wf), butanol (bf) and chloroform (cf) were prepared and then their antioxidant activities, as well as total phenolic contents, were evaluate...