Ozone gas is a highly effective surface disinfectant for instruments, implants and prostheses. As a result of the spontaneous and catalyzed breakdown of the molecule, it is suitable for use in the mouth during surgical interventions; the positive biophysical properties mean that it promotes wound healing and epithelization and reinforces the natural antiradical principles of cells (by means of ...

Although the term 'antioxidant' is used very frequently, there are problems with the definition of antioxidants and estimation of antioxidant activity. The distinction between antioxidant and antiradical activities is not always obvious. This minireview discusses critically the principles, advantages and limitations of the most frequently used methods of estimation of antiradical and antioxidan...

Antioxidant capacity (AOC) against peroxyl radical and 2,2'-azino-bis-(3-ethylbenzothiazoline-6-sulphonic acid) diammonium salt (ABTS) radical cation was measured for a series of p-hydroxybenzoic (HB) and p-hydroxycinnamic (HC) acids at different pH. Quantum-chemical computation was performed using Gaussian 3.0 software package to calculate the geometry and energy parameters of the same compoun...

Phenolic compounds and flavonoids are known by their antioxidant properties and one of the most important sources for humans is the diet. Due to the harmful effects of synthetic antioxidants such as BHA and BHT, natural novel antioxidants have become the focus of attention for protecting foods and beverages and reducing oxidative stress in vivo. In the current study, we investigated the total a...

The potential antiproliferative and antiradical activities of an enzymatic extract of Ecklonia cava together with its crude polysaccharide (CpoF) and crude polyphenolic fractions (CphF) were evaluated in vitro. Tested extracts showed strong selective cell proliferation inhibition on all cancer cell lines tested, especially CphF extract, containing high polyphenol amount, showed 5.1 microg/ml of...

Antibacterial and antioxidant properties of the leaves and stem essential oils (EOs) of Jatropha gossypifolia and their efficacies against infectious and oxidative stress diseases were studied in vitro. The EOs obtained using Clevenger modified apparatus were characterized by high resolution GC-MS, while their antioxidant and antibacterial properties were examined by spectrophotometric and agar...

BACKGROUND The pharmaceutical and food industries expect detailed knowledge on the physicochemical properties of elderberry fruit extracts, their stability and microbiological quality, as well as the polyphenol content in elderberry cultivars. The characteristics of the extracts might be additionally modified by citric acid, which improves the stability of anthocyanins and protects processed fr...

Antioxidant properties of substrates [flavanone (1), 6-hydroxy- (2), 7-hydroxy- (3), 5,7,4'-trihydroxy- (5), and 7-methoxyflavanone (4)] and products of their microbial transformations, comprising hydroxylation, O-methylation, stereospecific reduction, dehydrogenation, and C-ring cleavage of the benzo-gamma-pyrone system, were determined. Measurements of the antiradical activity (expressed as I...