Natural antioxidants found in marine macroalgae are bioactive compounds known to play an important role in the prevention of diseases associated with aging cells protecting them against the oxidative damage. The purpose of this study was to evaluate the antioxidant and cytotoxic activity of ethanolic extracts of two species of red seaweeds, Amansia multifida and Meristiella echinocarpa. In vitr...

Antioxidant activity of lactic acid bacteria is associated with multiple health-protective effects. Traditional indexes of chemical antioxidant activities poorly reflect the antioxidant effects of these bacteria in vivo. Cellular antioxidant activity (CAA) assay was used in this study to determine the antioxidant activity of cell-free supernatants (CFSs) of 10 Lactobacillus strains. The perform...

The present study was aimed to enzymatic antioxidants (superoxide dismutase, catalase, polyphenol oxidase), nonenzymatic (saponin, flavonoids, ascorbic acid and tannin), anti-oxidant ability assays (total anti-oxidant, hydroxyl radical scavenging ability, reducing power activity, inhibition of lipid peroxide formation, DPPH activity metal chelating assay) in I. marginata leaves whole plant. res...

Eucalyptus pulverulenta (Baby Blue Eucalyptus) originated from Australia is one of the rare species family (Myrtaceae) and well adapted to hilly regions India. Apart cut foliage utility plant, its leaves have a pleasant aroma like most members Myrtaceae. This study was designed extract essential oil using hydro distillation method. Four different types samples were used (viz. tender leaves, mat...

This study investigated the antioxidant activity of one hundred kinds of pure chemical compounds found within a number of natural substances and oriental medicinal herbs (OMH). Three different methods were used to evaluate the antioxidant activity of DPPH radical-scavenging activity, ABTS radical-scavenging activity, and online screening HPLC-ABTS assays. The results indicated that 17 compounds...

Eleven essential oils, namely, Cananga odorata (Annonaceae), Cupressus sempervirens (Cupressaceae), Curcuma longa (Zingiberaceae), Cymbopogon citratus (Poaceae), Eucalyptus globulus (Myrtaceae), Pinus radiata (Pinaceae), Piper crassinervium (Piperaceae), Psidium guayava (Myrtaceae), Rosmarinus officinalis (Lamiaceae), Thymus x citriodorus (Lamiaceae) and Zingiber officinale (Zingiberaceae), wer...

Objective: This study is to investigate the antioxidant and antitumor effects of the extract fractions of the Ferula sinkiangensis K. M. Shen. Methods: Four different fractions of the Ferula sinkiangensis K. M. Shen were obtained by the extraction with petroleum ether, ethyl acetate, n-butanol, and methanol, respectively, which were used to treat the HCT116, Caco-2, HepG2, and MFC cells. Free r...

In the present work, Allium sativum paste has been prepared and analyzed to determine their antioxidant, in vitro antibacterial, in vitro cytotoxicity and apoptosis activities. Butylated hydroxy toluene has been used as standard. Results show the highest % of inhibition in DPPH assay 97.06±0.001 and metal chelating assay 82.35±0.005 at 100μg concentration. Extracts exhibited strong antimicrobia...

Piper chaba Hunter, a flowering vine of Piperaceae family, has been using for long time in south Asian country for culinary meat preparation. As stem and root of this plant has been using traditionally in fat rich meat preparation, the antioxidant and anticoagulation potential of this herb is a great interest of study and it was evaluated using cold and boiled water extract of dried and grinded...

BACKGROUND Free radical-induced oxidative stress is the root cause for many human diseases. Naturally occurring antioxidant supplements from plants are vital to counter the oxidative damage in cells. The main objective of the present study was to characterize the antioxidant and antiproliferative potential of rice bran extracted from an important Indian rice variety, Njavara and to compare the ...