Chemistry: Recent submissions

Now showing items 241-255 of 255

DETERMINATION OF PHENOLIC COMPOUNDS & THEIR ANTIOXIDANT ACTIVITIES IN ROOT EXTRACTS OF PLECTRANTHUS EDULIS (ETHIOPIAN POTATO) GROWN IN AWI ZONE

Desalew, Kassie (2017-10-13)

Plectranthus edulis (Ethiopian potato) which are cultivated in three different districts found in awi zone Amhara region (Ethiopia) were analyzed for the estimation of their total secondary metabolites (polyphenols and ...
COMPARATIVE STUDY ON ANTIMICROBIAL AND ANTIOXIDANT ACTIVITIES OF CRUDE EXTRACTS OF LEAVES OF Citrulluscolocynthis (YEMEDER EMBUAY)AND Justicaschimperiana (SIMEZA or SENSEL

TABOTE, KASAGN (2017-10-13)

The crude powdered leaves of these plants were extracted by 70%ethanol. J. schimperiana leaf extract had higher amount of yield (11.29 %) than C. colocynthis leaf extract (8.28%). The total flavonoid was higher inJ. ...
Synthesis, Structural Investigation and Assessment of Antibacterial Activities of Mixed Ligand Complexes of Copper(II), 1,10-Phenanthroline and Adenide

Yilma, Shiferaw (2017-10-13)

Infectious diseases are still remains a crucial and challenging problem and metal-based drugs are found tobe morepotent than parent drugs to inhibit infection disease. In this work, Mixed ligand Cu(II) complexes containing ...
Assessment of the Level of Selected Metals in Chile Pepper and Soil samples fromFogera Woreda, SouthGondar,Ethiopia

Fasika, Molla (2017-10-13)

Pepper (Capsicum annuum)is a staple spice food for more than half of the population ofthe world. In Ethiopia, for example, it is the mostcommon and cultivated food species. In this work Flame Atomic Absorption techniquewas ...
INVESTIGATION OF ANTIOXIDANT AND ANTIBACTERIAL ACTIVITIES OF (Rosmarinusofficinalis) ROSEMARYLEAF EXTRACTS

TAREKEGN, BEYENE (2017-10-13)

The antioxidant and antibacterial activities of the extracts were determined by reducing activity assay. The phytochemical screening tests were done using defferent confirmatory tests pirior to quantitative determination. ...
SYNTHESIS, CHARACTERIZATION AND ANTIMICROBIAL ACTIVITIES OF NEW COBALT (II) MIXED-LIGAND COMPLEX CONTAINING 1, 10-PHENANTHROLINE AND ACETONITRILE

Kassahun, Fetwi (2017-10-13)

Coordination compounds play vital roles in biology, biochemistry and medicine. Thus, synthesis and study of new mixed ligand complex is very important. In this study a new Co (II) mixed ligand complex was synthesized using ...
Investigation of Total Polyphenolic Compounds, Antioxidant Activity and Determination of Some Selected Metals level on Dovyalisabyssinica (Koshem in Amharic) fruit grown inAmhara Region, Ethiopia

Berhanu, Tadesse (2017-10-13)

Dovyalisabyssinica (koshem in Amharic) is an endemic fruit in Ethiopia but now available in various countries in the world. However there is a paucity of information about some of its constituents. In this study,total ...
SYNTHESIS, CHARACTERIZATION AND ANTIMICROBIAL ACTIVITIES OF MONONUCLEAR COPPER (II) COMPLEX OF 1, 10-PHENANTHROLEIN AND ACITAMID LIGANDS

WONDIE, MEKONNEN (2017-10-13)

In this thesis, the synthesis, characterizations (conductivity measurements, melting point determination ,chlorideestimation,FT-IR, UV-Vis, ICP-OES) and biological activities of a new mononuclear copper(II) complex of the ...
Synthesis and Assessment of Antibacterial Activities of a New Complexes of Ni (II) Containing 2, 2- Bipyridine, and 1,10-phenanthroline

Tewolign, Mitku (2017-10-13)

Designing coordination compounds by ligand tailoring with therapeutic abilities has become a fascinating research field. In this work three new 1, 10-Phenanthroline and 2, 2’-Bipyridine mixed ligand complexes of ...
COLORIMETRIC DETERIMINATION OF Cr (VI) IN TANNERY EFFLUENT USING BIOLOGICALLY SYNTHESIZED SILVER NANO PARTICLE

ANTENEH, DEMELASH (2017-10-11)

COLORIMETRIC DETERIMINATION OF Cr (VI) IN TANNERY EFFLUENT USING BIOLOGICALLY SYNTHESIZED SILVER NANO PARTICLE
Synthesis and Investigations of Antibacterial Activities of New Mixed Ligand Complexes of Co (II) containing 1, 10-Phenanthrolineand 2, 2’-Bipyridine

Zerubabel, Moges (2017-10-11)

To overcome the alarming problem of microbial resistance to antibiotics, the discovery of metal complex drugs are found to be more effective than parent drugs to inhibit the microbial resistance to antibiotics.In this work, ...
GREEN SYNTHESIS OF COPPER OXIDE (CuO) NANOPARTICLES USING KHAT LEAF EXTRACT AND EVALUATION OF ITS ANTIBACTERIAL ACTIVIES

KIFLOM, G/MEDHN KELELE (2017-10-11)

In the present investigation a fast, convenient and environment friendly method has been used for the synthesis of copper oxide nanoparticles by biologically reducing 1 mMCuSO4 solution with extract of 2 % (m/v) of Khat ...
Synthesis, Structural Investigation and Assessment of Antibacterial Activities of New Cu (II) Complexes Containing 2, 2’-Bipyridine and 1, 10- phenanthroline

Etsana, Kiros (2017-10-11)

The discoveries of metal complex drugs are found to be more effective than parent drugs to overcome the microbial resistance towards antibiotics. This work involves synthesis, structural investigation and assessment of ...
VOLTAMMETRIC DETERMINATION OF ASCORBIC ACID IN GINGER USING GLASSY CARBON ELECTRODE

Mulunesh, Assaye (2017-10-11)

The oxidative behavior of ascorbic acid (AA) in Ginger Rhizome was studied at a glassy carbon electrode in 0.1 M Na2HPO4-NaH2PO4 buffer as a solvent and supporting electrolyte using cyclic voltammetry (CV), and square-wave ...
Phytochemical, Antioxidant and Antimicrobial Studies of Ethanolic and Methanolic Extracts of Aloe elegans Leaves gel

Halefom, Nigus (2017-10-11)

The present study aimed at investigating the phytochemical, antioxidant and antibacterial activities of the ethanolic and methanoli extracts of Aloe elegans leaves gel. The phytochemical screening revealed the presence ...

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