Volume-15 ~ Issue-8 ~ Aug. 2022

Abstract: N-(2-hydroxyethyl)-3-vinyl indole was synthesized by the reaction of 3-vinyl indole with ethylene carbonate in presence of sodium hydride in the solvent medium of DMF at first at 00c for 1h then at 400C for 3h. N-(2-acetoxy ethyl)-3-vinyl indole was synthesized by the reaction of N-(hydroxyethyl)-3-vinyl indole with acetic anhydride under reflux for 3h. N-(2-acetoxy ethyl) indole -3-(ethenyl phenanthrene) was synthesized by the treatment of N-(2-acetoxyethyl) -3-vinyl indole with 9-bromo phenanthrene in presence of palladium acetate, TOP and triethyl amine in the solvent medium of DMF at 900c for 50h. N-(2-hydroxy ethyl) indole-3-(ethenyl phenanthrene) was synthesized by the hydrolysis of N-(2-acetoxy ethyl) indole-3-(ethenyl phenanthrene) with 10% hydrochloric acid (ethanol/water=I.....

Keywords. N-(2-hydroxyethyl) -3-vinyl indole, N-(2-acetoxy ethyl)-3-vinyl indole, N-(2-hydroxy ethyl ) indole -3-(ethenyl phenanthrene) , N-(2-(allyloxy) ethyl) indole-3-(ethenyl phenanthrene) ,poly (siloxane).

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Abstract: Parkia biglobosa is a plant widely used in Senegal as source of food. Seed as well as the pulp of the fruit are widely consumed by people. The objective of our work is to determine the total polyphenols content (TPC) and the total flavonoids content (TPC) of aqueous and organic solvents extracts of the defatted seed and the pulp of the fruit of Parkia biglobosa. Aqueous extracts are richer in polyphenols with TPC value of 3.00 ± 0.11 mg GAE/gfor pulp and 2.11 ± 0.09 mg GAE/g for defatted seed. Methanol extracts are richer in flavonoids with TFC value of 2.81 ± 0.44 mg QE/g for pulp and 4.22 ± 0.22 mg QE/g for defatted seed.....

Keywords. Parkia biglobosa, polyphenols, flavonoids, DPPH., CUPRAC

[1]. A.A. Gaye, O.I.K. Cisse, B. Ndiaye, N.C. Ayessou, M. Cisse, C.M. Diop, Evaluation of Phenolic Content and Antioxidant Activity of Aqueous Extracts of Three Carica papaya Varieties Cultivated in Senegal, Food and Nutrition Sciences, 10,2019, 276–289. https://doi.org/10.4236/fns.2019.103021
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Abstract: In this research work, phytochemical analysis of Curcumin ,Vetiveriazizanioides and Piper nigrum were carriedout by using water and acetone as solvents by greener Sonication method.Ultrasound sonication is one among thebest extraction methods in which frequency range of 20 kHz, electrical sound energy transformed into physicalvibration mode agitated the solid plants at 700 c and disrupts the cellular chemical compounds into solution withoutdamagingtheoriginalnature.AqueousextractsofVetiveriazizanioidesshowedthepositiveresultsforCarbohydrates, alkaloids, flavonoids, Coumarin, Quinone and terpenoids. But Polyphenol was not found in aqueousextract ofVetiveriazizanioides.....

Keywords. Copper II neocuproine, Phytochemical analysis, antioxidant potential, Curcumin ,Vetiveriazizanioides and Piper nigrum

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Abstract: The aim of this study was to synthesize a novel 2,6-diamino-1-(anilinooxy)hexan-1-ol having imine moiety and their identification by spectral techniques. 2,6-diamino-1-(anilinooxy)hexan-1-olwas synthesized from the "2,6- diaminohexanoic acid (Lysine amino acid) with aniline" in a 1:1 molar ratio. Imine derivatives of 2,6-diamino- 1-(anilinooxy)hexan-1-olwere synthesized by using various derivatives of aromatic aldehydes. Furthermore, 2,6-diamino-1-(anilinooxy)hexan-1-oland their imine derivatise were characterized by using IR and NMR spectral techniques.

Keywords. Lysine amino acid, Aromatic aldehyde, Novel imine moiety

[1]. Pronoy G, Shishir K D, Mosummath H A, Kaykobad Md. R K, ABM Nazmul I, A Review on Synthesis and Versatile Applications of Some Selected Schiff Bases with Their Transition Metal Complexes.Egyptian Journal of Chemistry.2012;62(2):523 –547.
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Abstract: In order to pedict the thermodynamic properties for ternary systems from binary ones, using the Chou's model which is known as a new general solution model, Gibbs free energy and critical driving force associated with in fcc(γ) to hcp(ε) transformation observed in the Co-Cr-Mo ternary system containing very small nickel and carbon used widely in orthopedic implant materials such as hips and especially dental prosthesis in the human body are evaluated as a function of temperature. The Gibbs free energies and driving force and equilibrium temperature between the fcc and hcp phases are compared with those obtained from the experiments.

Keywords: Critical Driving Force, Phase Transformation, Fcc(γ) phase to Hcp(ε) phase, Co-Cr-Mo Alloy

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Abstract: Background: The sources of phenolics pollutants in water are mainly pharmaceutical and chemical industries. The compounds are carcinogenic, cytotoxic, mutagenic and teratogenic even at modest concentrations. These health effects are unrectifiable and it is prudent to remove phenols from water to overcome them.Despite substantial achievements on modern methods for removal of phenol from aqueous media, there is need to search for bio-adsorbent which is non-toxic, ecofriendly, cost-effective and efficient. This study reports on the modulation of cornstarch by chlorination followed by amination using triethanolamine, to be used as adsorbent. Materials and Methods: Starch was......

Keywords: Adsorption; Amination; Bioadsorbent; Modulation; Phenol: Cornstarch

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