Flavonoids are a large family of compounds associated with a broad range of biologically useful properties. In recent years, synthetic compounds that contain two flavonoid units linked together have attracted attention in drug discovery and development projects. Numerous flavonoid dimer systems, incorporating a range of monomers attached via different linkers, have been reported to exhibit inte...

The production of pistachio in Tunisia generates a large amount potentially valuable waste, such as leaves, that could be used source bioactive compounds. In this work, the extraction phytochemicals from Pistacia vera L. leaves (male and female) by microwave-assisted (MAE) has been investigated. A response surface methodology (RSM) was for optimization compounds extraction, where independent va...

In this study, the phenolic composition, antioxidant and antimicrobial activities of Zizyphus lotus Ruta chalepensis collected from Mascara-Western Algeria were investigated. The total phenolic, flavonoid tannin contents in methanolic (Me.E) aqueous (Aq.E) extracts measured using colorimetric methods. Polyphenolic profiles analyzed by high performance liquid chromatography (HPLC), while effect ...

In order to screen the Catalpa plant with high antioxidant activity and confirm the corresponding active fractions from Catalpa ovata G. Don, C. fargesii Bur., and C. bungei C. A. Mey., total flavonoid contents and antioxidant activities of the extracts/fractions of Catalpa plant leaves were determined. The determined total flavonoid content and antioxidant activity were used as assessment crit...

The presence of flavonoids in white pitaya’s flesh and peel was confirmed using the Thin Layer Chromatography Screening method. Flavonoid extracted solvent fractionation then subjected to three assays. Using Kirby-Bauer method, better antibacterial activity against E. coli found 100% extract, partially active at 10.28 mm. flavonoid extract inactive both S. aureus concentrations 100%, 75%, 50%. ...

Tea (Camellia sinensis L.) is amongst the most popular beverages around globe. contains polyphenols and flavonoids, which have huge health significance. Hence, flavonoids can be considered as good indicator for tea quality. In present investigation four different varieties i.e., Nilgiri, Darjeeling, Assam Munnar were analyzed their moisture content, water activity, total phenol content flavonoi...

<p class="MTitel">Urolithiasis is a recurrent pathology manifested by the stone formation in urinary system; it has long been treated traditional medicine plant remedies. Several studies have provided efficacy of medicinal plants as well their chemical compounds against formation. The present work aims to summarize antiurolithiatic effect phytochemicals, including quercetin, rutin, catech...

Amphoteric aminophenol compounds have diverse synthetic and industrial use due to their multi-functional chemical reactivity. In this study, the synthesis of amphoteric flavonoid via modification with sub- supercritical ammonia was explored. Both product formation degree amination both catechin condensed tannins were dependent on processing conditions employed. Applying subcritical produced amm...

In this work, molecularly imprinted nanospheres for controlled/sustained release of quercetin were synthesized employing methacrylic acid and ethylene glycoldymethacrylate as functional monomer and crosslinking agent, respectively. One pot precipitation polymerization was chosen as polymerization technique to obtain nanosized materials with spherical shape. Morphological and hydrophilic propert...

Objectives: Leaves and flowers ofElaeagnus 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). Materials and Methods:...