This study is planned to determine the antioxidant activity and total phenols content of essential oil different solvent extracts endemic plant Merremia borneensis. The activities were examined by three methods, DPPH, β-carotene reducing power assays. In all aqueous ethanol extract exhibited a higher potential than that other (hexane, chloroform, ethyl acetate butanol) oil. As assumed, amount phenolics was very high in this extract. Chloroform has been found be rich flavonoids. A positive...

Microplastics are a topical environmental problem that requires urgent solutions. They ubiquitously present in various wastewaters and discharged into aquatic environments because of difficulties their removal. In this study, novel filtration medium, superhydrophobic geopolymer foam, was prepared investigated for the separation microplastics from water. The foam using metakaolin, sodium silicate, hydroxide, hydrogen peroxide, Triton X-100 surfactant as raw materials superhydrophobized with...

The nickel(II) complexes of the dibasic tridentate Schiff bases viz. Sal-AnthraH2, HNP-AnthraH2, HAP-AnthraH2, HPP-AnthraH2, Acac-AnthraH2, Etac-AnthraH2, and Bzac-AnthraH2, have been synthesized characterized by IR, 1H NMR, mass electronic spectra, magnetic conductance studies. On basis analytical data, four-coordinate geometry was proposed for prepared complexes. found to possess 1:1 stoichiometry. bio-efficacy has examined against growth bacteria fungi in vitro evaluate their...

This study demonstrates a high-value valorization of blast furnace slag in foamed alkali-activated filters for adsorption applications, using methylene blue as model compound. The were prepared by combining alkali activation with direct foaming, followed curing at 60 °C 4 h. Five different surfactants compared the stabilization foams. Based on an initial screening, Triton X-405 surfactant was selected further studies. dosages and H2O2 optimized to obtain compressive strength 2.59 MPa...

Geopolymers resemble conventional ceramics but can be manufactured at near-ambient temperatures. In this work, geopolymer–bentonite composite foam with silver nanoparticles was prepared and applied for water disinfection, inspired by point-of-use ceramic filters. The inactivation efficiency against Escherichia coli intestinal enterococci bacteria found to promising (0.6–2.4 0.3–1.4 log10 reductions, respectively) ∼1 d. However, the somatic coliphage viruses poor (<0.05 log10). geopolymer...

Alkali-activated foams are ceramic-like materials prepared at near-ambient temperature. This study investigates them for point-of-use water disinfection, thus providing an alternative to ceramic filters fired a high with different compositions were characterized the porosity, mechanical strength, shrinkage, and microstructure. The optimized foam, employing metakaolin as raw material, was coated colloidal Ag solution. disinfection performance leaching behavior of followed in continuous 10...

Most of the locally available medicinal plant is used as medicine through different ways since ancient time. Hyoscyamus gallagheri (H. gallagheri) one rare which indigenous to Oman well Gulf countries. The main target this study estimate total phenols and flavonoids content evaluate antioxidant activities aerial parts extracts were collected from southern part Oman. Initially, powder selected was extracted with a polar solvent. prepare extract successive fractionation by polarities solvents....

Abstract Adsorption is a promising method to remove dyes, such as methylene blue, from wastewater. In this study, dynamic adsorption set-up was used treat synthetic wastewater containing blue by using alkali-activated blast furnace slag and lignin composite foam. The structure of the foam without first optimized comparing cationic non-ionic surfactants in preparation via direct foaming method. selection surfactant affects porosity pore through different abilities stabilize gas–liquid...

In this study, peracetic acid (PAA) was investigated as a novel blowing agent for the preparation of porous alkali-activated materials from metakaolin or blast furnace slag by direct foaming method. PAA is an organic peroxide with lower stability OO bond in comparison to H2O2. It also introduces acetate anions system, which can chelate cations potentially increase extent precursor dissolution and decrease surface tension gas-liquid interfaces prompting open porosity formation. compared H2O2...

Objective: To select best extraction method for the isolated antioxidant compounds from stems of Adenium obesum. Methods: Two methods used are Soxhlet and maceration methods. Methanol solvent was both method. The methanol crude extract defatted with water extracted successively hexane, chloroform, ethyl acetate butanol solvents. potential all extracts were determined by using 1, 1-diphenyl-2- picrylhydrazyl Results: percentage yield is higher compared to its derived fractions extractor...

The most abundant polymeric compound in nature after cellulose is chitin. Mostly, it used as raw material for food additives, agriculture, biomedicine, water treatment, cosmetics and textile industry. Exoskeletons of crustaceans such lobster, crabs shrimps, mollusks, insects the cell walls certain fungi are main sources best production chitin marine exoskeletons. current objective this study to standardize demineralization process removal minerals from waste Portunidae segnis (P. segnis) by...

Chronic disease is an irregular change inside or outside of the tissues and organs that results in accumulation, local damage, inflammation irritation. Suaeda aegyptiaca (S. aegyptiaca) a plant has been used for long time treatment human diseases. Therefore, aim this present research study to prepare various extracts screen their antioxidant activity spectroscopically, later on isolate biomarkers from significantly highest active crude extract aerial parts S. aegyptiaca. To attain...

Abstract Piper nigrum (P. ) is a tropical medicinal plant widely available in Southeast Asian countries including Oman. In It has long history of usage places such as Oman for treating rheumatism, colds, and various infections. Based on the uses, purpose this research to create diverse fractions using increasing solvent polarity from aerial part collected species evaluate their antibacterial antioxidant activities by established bioassays. The was Southern processed standard method....

Traditionally, in Oman, the whole plant is used to treat body, including treatment of anaemia, arthritis and skin inflammation. Crude extracts were prepared from leaves Dodonea viscosa (D. viscosa) using different polarities solvents isolate flavonoid compounds highest activity crude extract selected species collected AL-Jabal AL Akhdar, Nizwa. The samples collected, processed extracted with methanol a hot extraction method. was dissolved water successively fractioned produce hexane,...

An alternative spectrophotometric method was optimized and validated for the estimation of mercury using diethyldithiocarbamate (DDTC), a common reagent, widely used preconcentration isolation metal ions in complex matrices followed by their varied techniques. Diethyldithiocarbamate forms yellow Cu(DDTC)2 with copper white Hg(DDTC)2 (having d10 system) which are extracted CCl4. The UV-visible spectrum is very stable at pH 5.0 has maximum absorption (λmax) 435 nm. more than Cu(DDTC)2....

Furano-napthyl-hydroxy cyclohexyl type of compound was isolated first times in plant from the ethyl extracts leaves Mesua ferrea. The structure has been established by modern spectroscopic techniques such as UV, IR, 1H-NMR, 13C-NMR and mass spectroscopy identified 12, 13-furano-8-hydroxy napthyl-6-0-b-2',3',4',6' tetrahydroxy-5',5' dimethyl ether. Keywords: ferrea Linn; Euphorbiaceae; Medicinal plant; new compound; spectral analysis

The purpose of this study is to prepare various extracts with different polarity solvent from the leaves which was collected Malaysia and determine their antioxidant cytotoxic activities by usual bioassays. extract underwent successive fractionation evaporation process using solvents form corresponding hexane, ethyl acetate, dichloromethane, butanol extracts. All including water methanol were used for determination DPPH BSL results activity showed that all papaya did not give much...

Nowadays, effective medications as antioxidant agents are mandatory for a safe and sustainable environment. Dodonaea viscosa (D. viscosa) is used traditionally by the Omani people to treat rheumatism, toothaches, fever, cold, malaria, headaches, indigestion, ulcers, diarrhea, constipation, dysmenorrheal irregular menstruation. This study was carried out prepare leaf extracts different solvents determine their activity total phenols content. The selected plant collected locally near...

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