Ghazaleh Moghaddam

Université du Québec à Montréal | UQAM · Department of Chemistry

“VARD” formula consisting of Rosa damascena Mill. (Rosaceae) petals, and rhizomes of Glycyrrhiza glabra L. (Papilionaceae) and Nardostachys jatamansi DC. (Valerianaceae), has been proposed for gastric ulcer in Iranian traditional medicine. We investigated the antiulcer activity of each plant separately and in combination. The biochemical and molecu...

Purpose: To employ high performance liquid chromatography (HPLC) techniques to determine edible additives in commercial sports drinks. Methods: A total of 105 samples including 21 different brands of sports drinks were purchased from markets in Tehran, Iran. The process conditions included a C18 column, a mobile phase consisting of aqueous ammonium...

Purpose: To develop a simple, selective, and sensitive extraction and assay method for the analysis of eight food dyes. Methods: All sulphonated colors were extracted by an NH2-aminopropyl-modified silica SPE cartridge, and thereafter determined by reverse phase high performance liquid chromatography (RP-HPLC) using a C18 column with gradient eluti...

The effects of vinegar and oxymel solutions (used in Iranian traditional medicine) and processing temperatures (75, 85 and 100°C) on the milk coagulation was studied to identify and determine the protein indicators of resulting whey. The HPLC (high performance liquid chromatography) analysis showed that the α-lactalbumin (ALA) and β-lactoglobulin (...

Purpose: To monitor changes in fatty acid profiles of brown and yellow varieties of flaxseeds in the raw and roasted states using gas chromatography (GC). Methods: Samples of flaxseeds were extracted with n-hexane in a Soxhlet apparatus for 8 h. Methyl-esterification of the samples was performed by methanolic boron trifluoride (BF3-MeOH) method acc...

Role of oils and fats in diet is one of the most complex issues of nutrition studies. The dietary effect of fats mostly depends on their fatty acids composition. Due to usage of partially hydrogenated vegetable oils in production process, margarine is one of the important sources of trans fatty acids. The aim of this study was evaluation of fatty a...

Purpose: To evaluate the antiulcer activities of the methanol extract of pomegranate (Punica granatum L) fruit peel using 80 % ethanol-induced gastric ulcer model in rats.Methods: Male Wistar rats, 175 - 220 g, were fasted for 48 h, but had free access to water. They were randomly divided into nine experimental groups. Ulcer was induced in the rats...

Purpose: To investigate 38 natural and 62 branded lemon juices for their total antioxidant activities and flavonoid content.Methods: The ferric reducing antioxidant power was applied to evaluation of antioxidant. Additionally quercetin, eriocitrin, diosmin and hesperidin contents were evaluated by high performance liquid chromatography (HPLC).Resul...

Tragopogon graminifolius DC. (TG), Compositae family, is traditionally used for the treatment of various diseases like gastrointestinal and hepatic disorders. The aim of the present study is to standardize extracts from TG used for preparation of different dosage forms in traditional Iranian medicine (TIM) based on phenolic compounds. For this purp...

Role of oils and fats in diet is one of the most complex issues of nutrition studies. The dietary effect of fats mostly depends on their fatty acids composition. In this study the fatty acid profile, oxidative stability index, total phenol and also peroxide values of several liquid used liquid oil samples were assessed at the same time by gas chrom...

Pomegranate (Punica granatum L.) is native to the Mediterranean region and has been used extensively as a medicine in many counties. Hyperoside is known as an important flavonoid with antioxidant activity and anti hypertension effect. Anthocyanins are the active component in several herbal medicines, thus accurate measurement of hyperoside and anth...

Eight synthetic food colours were analysed by green liquid chromatography. Green liquid chromatography is an environmentally friendly technique which does not use organic solvents in the extraction procedure or in the chromatographic method. Analysis was carried out for the following colours: tartrazine (E102), indigotine (E132), Quinoline Yellow (...

Recently, pomegranate (Punica granatum L.) was demonstrated to be high in antioxidant activity and strong in phenolic, flavonoid and tannin contents in its fruit, flower and also aerial part. In this paper six cultivars of Iranian pomegranate flower including Ghojagh, Rabbab, Malas, Shishegap, Danesiah and Golnar have been investigated. The maximum...

Purpose: To evaluate the antiulcer activities of the methanol extract of pomegranate (Punica granatum L) fruit peel using 80 % ethanol-induced gastric ulcer model in rats. Methods: Male Wistar rats, 175-220 g, were fasted for 48 h, but had free access to water. They were randomly divided into nine experimental groups. Ulcer was induced in the rats...

Clinical and epidemiologic studies showed that among dietary factors the type of fatty acids (FAs) in the diet plays an important role in determining risk of chronic disease. The aim of our study was to determine the levels of Trans FA (TFA) in edible oil samples consumed in Tehran, Iran analyzed by gas chromatograph (GC). The mean of total TFA was...

Complete removal of smear layer and debris during the process of root canal therapy is of paramount importance in order to achieve the objectives of endodontic treatment. The aim of this study was to compare the amount of extruded debris and smear layer using two widespread rotary nickel-titanium instruments. Fifty eight freshly extracted human man...

Vitamins are a class of nutrients which are essential for the body's various biochemical and physiological processes. The aim of this paper was to establish a reference range for serum concentration of vitamins E, A and C in healthy local population of Tehran. Serum concentration of these vitamins in 173 subjects, aged between 16 and 59 years analy...

In this paper, the tocopherol contents, fatty-acid compositions and some oxidation indexes of olive (Olea europaea L.) pulp and kernel oils, originating from six cultivars, were determined. The tocopherol contents varied from 110 ± 7.34 to 358 ± 3.86 μg/g in pulp oil and from 15.0 ± 0.17 to 38.8 ± 0.27 μg/g in kernel oil. The major fatty acid in al...

Safety assessments of branded lemon juice are currently evaluated with parameters such as the formalin index, acidity, Brix, pH and dry content. In this study, other parameters such as vitamin C, antioxidant and phenolic compounds were evaluated to introduce some new and reliable indexes for safety assessments of lemon juice. Two groups of lemon ju...

A green chromatographic method for the successful separation and determination of eight synthetic food colorants (Tartrazine E 102, Quinoline Yellow E 104, Sunset Yellow E 110, Carmoisine E 122, Ponceau 4R E 124, Allura Red E 129, Indigo Carmine E 132 and Brilliant Blue E 133) was developed. A C8 stationary phase was used and the mobile phase was a...

The vanillin assay is a spectrophotometric method for anthocyanin determination that is simple, quick and inexpensive. The method is preferred because of its high sensitivity, specificity and simplicity; however, the results of this test are influenced by several factors. Hence, a D-optimal experimental design approach was investigated to simultane...

Date is one of the world's oldest food-producing plants wich has always played an important role in the economy and social life. Various researchers examined chemical composition and nutritional values of edible parts of dates while limited information about chemical composition and nutritional quality of date seed is available. In this study, fatt...

Some studies have hypothesized the protective role of vitamin C against cardiovascular disorders (CVD) in patients with end-stage renal disease (ESRD). This study was designed to assess plasma vitamin C concentration and its relationship to hemodialysis (HD) patients' morbidity and mortality. Plasma vitamin C concentrations were assessed in HD pati...

Vitamin E is a potent reactive oxygen metabolites (ROM) scavenger. It is a lipid-soluble vitamin and its main function is to protect polyunsaturated fatty acids against oxidative stress. Twenty-five mechanically ventilated Intensive Care Unit (ICU) adult patients participated in a prospective randomized clinical trial receiving either placebo (10 p...

The aim of this study was to investigate the fatty acids profile of five sesame cultivars including Branching Naz, Darab, Karaj, Dezful and Black sesame and the effect of time and temperature roasting procedure. The seeds oil content varied from 43±0.28 to 47±0.41% with the average content of 44.4±1.87%. Darab and Black sesame cultivar had the high...