UNLABELLED Objectives : Leaves and flowers of Elaeagnus angustifolia contain phenolic and flavonoid compounds. These compounds have antioxidant properties that protect cells from oxidative damage. The aim of this study was to determine and analyze total phenolic and flavonoid content of leaves and flowers in two E. angustifolia variants using different solvents (ethanol and methanol). MATERIA...

In this study, phenolic content of Pinus brutia’s bark was examined using an ultra-performance liquid chromatography tandem mass spectrometry with electrospray ionization source (UPLC-ESI-MS/MS) working in multiple reaction monitoring mode. Ultrasonic extraction method with 50% ethanol solution was used for the extraction of bark. The bark of Pinus brutia consisted of 15 compounds: gallic acid,...

Stachys genus with medicinal properties and high polymorphic features has been considered one of the largest genera of Lamiaceae. The aim of this study was to determine the flavonoid pattern variations and flavonoid groups in ten Stachys species belonging to two sections; Fragilicaulis, and Aucheriana. The studied species were collected from natural habitats in Iran and analysed for their flavo...

In the current study, changes in secondary metabolite synthesis and the pharmaceutical quality of sabah snake grass leaves and buds were considered in relation to plant age (1 month, 6 months, and 1 year old). The activity of the enzyme chalcone synthase (CHS, EC 2.3.1.74) was measured, as it is a key enzyme for flavonoid production. Significant differences in total flavonoid (TF) production we...

This study evaluated the impact of processing, packages (amber and transparent glass jars), storage time on stability bioactive compounds (total phenolic vitamin C), antioxidant activity mangaba jelly. Jelly significantly (p < 0.05) decreased activity. The time, influenced all variables studied in this work, although they were not affected by packages. A significant decrease was observed during...

to determine the phenolic content and antioxidant activity in some native iranian apple cultivars, some five cultivars namely: 'bekran', 'golab-e kermanshah', 'golab-e kohanz' 'golab-e sheikhi' and 'atlasi' were selected and compared with the standard cultivar 'gala'. the profiles related to four phenolic compounds (chlorogenic acid, quercetin-3-galactoside, catechin, and phloridzin) were deter...

in everyday life, our body generates free radicals and other reactive oxygen species which are derived either from the endogenous metabolic processes (within the body) or from external sources. many clinical and pharmacological studies suggest that natural antioxidants can prevent oxidative damage. among the natural antioxidant products, pycnogenol ® (french pinus pinaster bark extract) has bee...

boron (b) is a non-metal micronutrient which is essential for plants growth and development. formation of boron complex with cell wall matrix and phenolic compounds is a definite influence of boron in physiological process. it has been suggested that b-toxicity and deficiency may induce excess production of reactive oxygen species thereby promote defense responses by antioxidant enzymes or non-...

Background/Aim: The flavonoid quercetin exerts significant anti-inflammatory activity against chronic infections, including periodontal disease. However, it is unclear whether combination of quercetin with other flavonoids enhances antioxidant and anti-inflammatory activity. To clarify the molecular mechanism responsible for the anti-inflammatory activity of quercetin, we investigated the antio...