These compounds exert antioxidant activity by one electron reduction of the phenolic group
in the chromanol moiety.
Further change was found in the region of hydrogen-bounded phenolic group at 12.
Peaks of free phenolic group of L2 and both T units are located at 10.
We used PCBs with 4, 5, and 6 chlorine substitutions and the phenolic group
in the ortho, meta, and para positions.
The content of the carboxylic groups was much lower than of the phenolic group in the biochars, and the contents of both groups varied with the type of crop residue.
The contribution of organic anions to the alkalinity of non-legume biochars was overestimated due to the greater proportion of the phenolic group in total functional groups.
In the case of the human estrogen receptor site, a ligand with a phenolic group seems to be a common feature of most, but not all, molecules that display a substantial binding activity (8,9).
The importance of the para position of the phenolic group is consistent with findings from a study of estrogenic activity of alkylphenolic compounds (4).
In fact, the lignin available from cellulose production through the pulping process is a rather inert material, and the active phenolic groups
are unfavorably changed for use as an adhesive after the pulping processes.
The second is that the efficiency with which these compounds interact with P in the soil environment is primarily determined by the arrangement of their carboxylic and phenolic groups
(Fox et al.
Our work shows that the four major phenolic groups
- anthocyanins, clorogenic acids, quercetin derivatives and catechins - work on different cells - fat cells, macrophages and vascular endothelial cells," he explained.
A combination of structural features, two phenolic groups
as cathecolic system, forms an oxygenated system arrangement that may reflect the potentially antimicrobial properties of paepalantine.