The derivatives of hydroxybenzoic and hy­ droxycinnamic acids are widespread in the plant kingdom. A considerable number of these deriva­ tives are well known [1], Nevertheless there is only little existing information about the glucosides of these compounds and their distribution. Syringic acid-O-ß-D-glucoside was detected in Anodendron affine. [2], as well as /»-hydroxybenzoic acid-O-ß-D-gluc...

p-b-D-Glucosyloxybenzoic acid, p-Hydroxybenzoic, Caffeic acid and have been isolated from the whole plant of Abutilon indicum. The concerted use of IR, UV, NMR spectroscopy and chemical methods allowed the identification of these compounds.

Soil phenolic acids mainly come from crop residue and root exudates, which are often reported as allelochemicals affecting growth soil microbial community. Here, two acid compounds, p-hydroxyphenylacetic (HPA) p-hydroxybenzoic (HBA) were amended to the soils incubated under room conditions, samples collected soybean corn fields separately. The community was determined by PCR-DGGE (polymerase ch...

calix(6)arene hydroxamic acids (iii) are synthesised for the first time by reactingcalix(6)arene acid chloride(ii) with substituted hydroxylamines at low temperature in the presence ofsodium bicarbonate. the p-carboxycalix(6)arene(i) is obtained by an acid catalysed condensationreaction of p-hydroxybenzoic acid and formaldehyde. these calixarenes are characterised by meltingpoint, uv, ir, 1h nm...

The kinetics of the ozonation of three phenolic acids is investigated from ozone absorption experiments in a semi-continuous reactor. After the evaluation of stoichiometric ratios for the individual reactions between ozone and each phenolic acid, the oxidation of p-hydroxybenzoic acid by ozone is performed in a first stage. The influence of the operating variables on the degradation process is ...

Ruminal bacteria were subjected to a series of phenolic compounds in various concentrations to acquire fundamental information on the influence on growth and the potential limits to forage utilization by phenolic monomers. Ruminococcus albus 7, Ruminococcus flavefaciens FD-1, Butyrivibrio fibrisolvens 49, and Lachnospira multiparus D-32 were tested against 1, 5, and 10 mM concentrations of sina...