Results 261 to 270 of about 1,038,706 (318)

Metal Ion-Directed Functional Metal-Phenolic Materials.

Chemical Reviews, 2022
Metal ions are ubiquitous in nature and play significant roles in assembling functional materials in fields spanning chemistry, biology, and materials science.
Huimin Geng, Qi-Zhi Zhong, Jianhua Li, Zhixing Lin, Jiwei Cui, F. Caruso, J. Hao   +6 more
semanticscholar   +1 more source

Antioxidant activity of plant extracts containing phenolic compounds.

Journal of Agricultural and Food Chemistry, 1999
The antioxidative activity of a total of 92 phenolic extracts from edible and nonedible plant materials (berries, fruits, vegetables, herbs, cereals, tree materials, plant sprouts, and seeds) was examined by autoxidation of methyl linoleate.
Marja P. Kähkönen, A. Hopia, H. Vuorela, J. Rauha, K. Pihlaja, Tytti S. Kujala, M. Heinonen   +6 more
semanticscholar   +1 more source

Phenolic compounds: current industrial applications, limitations and future challenges.

Food & Function, 2020
Phenolic compounds are natural bioactive molecules found mainly in plant tissues that have shown interesting bioactivities, such as antioxidant, antimicrobial, anti-inflammatory, and antiproliferative activities, among others, which has led to great ...
B. Albuquerque, S. Heleno, M. B. P. Oliveira, L. Barros, Isabel C. F. R. Ferreira   +4 more
semanticscholar   +1 more source

Dissociation of phenols and phenolate salts and homocomplexation in the corresponding phenol–phenolate systems in benzonitrile

Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, 1985
The acidities of 12 substituted phenols (pKBNa relative to the pKBNa of HClO4) and the formation constants of the corresponding homocomplexes, KAHA, in benzonitrile have been determined from e.m.f. measurements. Comparison with previous results reveals that the stability of homocomplexes increases in aprotic solvents in the order acetonitrile ...
Józef Magoński, Zenon Pawlak, Frank Strohbusch   +2 more
openaire   +2 more sources

Phenol and substituted phenols AOPs remediation

Journal of Hazardous Materials, 2005
The oxidation of phenol and two substituted species (4-nitrophenol and 4-chlorophenol) has been carried out by means of the O3, UV-vis, O3+UV-vis, TiO2+UV-vis, O(3)+UV-vis+TiO2 and O3+TiO2 systems. From UV-vis experiments, the quantum yield of these organics has been calculated (0.018, 0.005 and 0.017 mol per Einstein for phenol, 4-nitrophenol and 4 ...
Fernando J. Beltrán, F. Javier Rivas, Maria Carbajo, Olga Gimeno   +3 more
openaire   +3 more sources

Kinetics of thermal degradation of char-forming plastics from thermogravimetry. Application to a phenolic plastic

, 2007
A technique was devised for obtaining rate laws and kinetic parameters which describe the thermal degradation of plastics from TGA data. The method is based on the inter-comparison of experiments which were performed at different linear rates of heating.
H. Friedman
semanticscholar   +1 more source

Phenol Peeling and the History of Phenol Peeling

Clinics in Plastic Surgery, 1998
Historically, phenol peeling has been embraced by plastic surgeons as the method of choice for improving the appearance of coarse facial rhytides. The principal advantage of phenol peeling is its predictability: it requires no pretreatment regime. This article details the technical aspects of phenol peeling, its uses and limitations, as well as methods
openaire   +5 more sources

Antioxidant activity and phenolic compounds in selected herbs.

Journal of Agricultural and Food Chemistry, 2001
The antioxidant capacities (oxygen radical absorbance capacity, ORAC) and total phenolic contents in extracts of 27 culinary herbs and 12 medicinal herbs were determined.
Wei-wei Zheng, Shiow Y. Wang
semanticscholar   +1 more source

Action of phenolic derivatives (acetaminophen, salicylate, and 5-aminosalicylate) as inhibitors of membrane lipid peroxidation and as peroxyl radical scavengers.

Archives of Biochemistry and Biophysics, 1994
The action of the phenolic compounds acetaminophen, salicylate, and 5-aminosalicylate (5-ASA) as inhibitors of lipid peroxidation was studied under conditions suitable for establishing their antioxidant potencies.
T. Dinis, V. Madeira, L. Almeida
semanticscholar   +1 more source

The phenolic constituents of Prunus domestica. I.—The quantitative analysis of phenolic constituents

, 1959
Methods for the quantitative analysis of anthocyanins, leuco-anthocyanins, flavanols and total phenols in plant tissue extracts are critically examined and suitable modifications of existing methods are described.
T. Swain, W. Hillis
semanticscholar   +1 more source