One of the options suggested for methane recovery from natural gas hydrates is molecular replacement of methane by suitable guests like CO2 and N2. This approach has been found to be feasible through many experimental and molecular dynamics simulation studies. However, the long term stability of the resultant hydrate needs to be evaluated; the decomposition rate of these hydrates is expected to...

BACKGROUND Qualitative and quantitative analyses of 'Zonouz' and 'Gala' apples phenolic compounds were accomplished by HPLC. MATERIAL AND METHODS Samples for phenolics study were taken at three different growing stages [1 - fruit early growing stage 2 - mid-stage of fruit development (80 days after full bloom) 3 - during commercial harvest time]. RESULTS The results showed qualitative diffe...

Purpose: To determine the phenolic composition and antiproliferative activity of 16 different extracts (hexane, dichloromethane, methanol and water) obtained from Bellis perennis, Convolvulus galaticus, Trifolium pannonicum and Lysimachia vulgaris on human breast cancer (MCF-7) and human hepatocellular carcinoma (HepG2/C3A) cell lines. Methods: The aerial parts of the plants were successively e...

The present study investigates the HPLC profiling of phenolic compounds, and antioxidant activities of Annona reticulata. Through HPLC assay, high levels of rutin hydrate (603.88 mg/100 g extract) and moderate amount of catechin, epicatechin, and p-coumeric acid were determined (99.00, 78.19, 85.38 mg/100 g extract, respectively). Some amount of vanillic acid, ellagic acid, and quercetin were a...

background and objectives: rutin, quercetin and liquiritin arepolyphenol flavonoids which have shown anti-inflammatory, antihepatotoxic, antiulcer, antiallergic, antidiabetic, antiviral and antioxidant activities. they are found in many herbal plants, one of them is cocculus hirsutus.  the objective of this research was to develop and validate a new, accurate, precise and economic hptlc method ...

Rutin is a polyphenolic naturally occurring compound potentially having a huge impact in human benefit which includes wound healing, cardiovascular, carcinoma therapeutic activities as well as have nutraceutical benefits. The objective of study was to establish a precise, accurate, sensitive and reliable method for estimation at low concentrations of rutin in biological fluids, using spectroflu...

The flavonoids quercetin, and its natural glycosides isoquercetin and rutin, are phytochemicals commonly consumed in plant-derived foods and used as a food beverage additive. Semi-synthetic maltooligosyl isoquercetin, monoglucosyl rutin and maltooligosyl rutin were developed by synthetic glycosylation to improve their water solubility for food and other applications. Using a system of Chinese h...

Gas hydrates dominated by methane naturally occur in deep marine sediment along continental margins. These compounds form in pore space between the seafloor and a sub-bottom depth where appropriate stability conditions prevail. However, the amount and distribution of gas hydrate within this zone, and free gas below, can vary significantly at different locations. To understand this variability, ...

Phenolic and flavonoid compounds are secondary metabolites of plants which possess various activities such as anti-inflammatory, analgesic, anti-diabetes and anticancer effects. It has been established that these compounds can scavenge free radicals produced in the body. Because of this ability, not only the plants containing phenolic and flavonoid compounds but also, the pure compounds are use...

the potential of tobacco waste as a viable source of medicinally important flavonoids like rutin has been investigated. three flavonoids, apigenin, quercetin and rutin, have been isolated from waste tobacco leaves, and their identities have been confirmed by uv-visible, 1h-nmr and 13c-nmr spectroscopy. by using analytical hplc, the amount of rutin present in the tobacco leaves, before and after...