The main objective of this study was the screening of some selected aromatic plants very popular in Greece, with respect to their total phenolic content, antioxidant capacity, reducing activity, and oxidative stability. All plants were extracted with the conventional method, reflux with methanol. The essential oils of the plants were also analyzed for their antioxidant properties. The total phe...

Several epidemiological studies have shown an inverse association between the consumption of polyphenol-rich foods and risk of cardiovascular diseases. However, accuracy and reliability of these studies may be increased using urinary total polyphenol excretion (TPE) as a biomarker for total polyphenol intake. Our aim was to assess if antioxidant activity, measured by a Folin-Ciocalteu assay in ...

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...

Although of the many colorimetric microestimations of sugar the Folin and Wu method (1920) has remained in most widespread use in clinical laboratory practice, the still increasing number of modifications continue to draw attention to several inherent weaknesses of the method which have not yet been eliminated, one of which is the instability of the colour solution. To avoid these drawbacks a m...

Origanum vulgare L., the most complex and variable species of genus Origanum, is used to cure various diseases in traditional medicinal system. In current investigation, O. was collected from its natural origin further multiplied for two years at experimental farm DIBER field station, Auli, afterwards, it grown three different altitudes, i.e., station Auli (2744 m), Pithoragarh (1524 Haldwani (...