Mahmoud Abd Elhaleim Mahmoud Mohamed

• Ph.D
• Professor (Full) at Cairo University

One of the environmental sustainability issues is salinity. Basil seedlings (Ocimum basilicum L.) were treated using NaCl solutions of three different concentrations prepared using irrigation (40, 80, and 130 mM), and various biochemical analyses were performed on basil leaves. The number of leaves, leaf area, moisture, weights, and MDA content of...

A new complex, [Ni(Tren)(Barb)(H2O)](Barb)(Barb-H)·2H2O (NiC) {Tren = tris(2-aminoethyl)amine and Barb = 5,5-diethlybarbiturate}, has been synthesized and characterized. The nickel(II) complex was grafted to g-C3N4, forming NiC@g-C3N4. The obtained NiC complex and its hybrid material NiC@g-C3N4 were characterized by FT-IR, TGA-DSC, UV–vis, SEM-EDX,...

A new mixed ligand complex, viz., [Ni(Tren)(Barb)(H 2 O)](Barb)(Barb-H)•2H 2 O (NiC) {Tren = tris(2-aminoethyl)amine and Barb = 5,5-diethlybarbiturate} has been synthesized and characterized. The nickel(II) complex was grafted to g-C 3 N 4 , forming NiC@g-C 3 N 4 . The obtained NiC complex and its hybrid material NiC@g-C 3 N 4 were characterized by...

The paper describes the synthesis and biological evaluation of some new benzimidazole derivatives as potent clinical drugs that are useful in the treatment of some microbial infections and tumor inhibition. The starting compound 2-(bromomethyl)-1H-benzimidazole (1) was prepared, and hence underwent interesting functionalization reactions to afford...

Two oxovanadium(IV) complexes, viz., [VO(Me-IDA)(H2O)2] (1) and NaH[VO(EDTA)]·4H2O (2) (Me-IDA = methyliminodiacetic acid and EDTA = ethylenediaminetetraacetic acid) have been synthesized and characterized by FT-IR, UV–Vis, mass spectrometry, elemental analysis, magnetic moment and thermal analysis, as well as electrochemical measurements including...

A reactivity study of both the amino group and the aryl substituent of a newly synthesized 2-amino-5-(4-acetylphenylazo)-thiazole compound and its derivatives via various electrophilic reagents was performed to obtain new bioactive chalcone, imine, and pyrazole-thiazolidine derivatives. The synthesized compounds were chemically elucidated by analyt...

A series of albendazole-based copper(II) complexes with different counter anions, [Cu(Albz)(H2O)2](ClO4)2 (1), [Cu(Albz)2(Cl)]Cl·2H2O (2), [Cu(Albz)2(NO3)](NO3) (3), and [Cu2(Albz)2(-SO4)2(H2O)2] (4) (Albz = albendazole), have been synthesized and characterized. Their structures and properties were characterized by elemental analysis, thermal analy...

A series of copper(II) complexes, viz. [TpMeMeCu(Cl)(H2O)] (1), [TpMeMeCu(OAc)(H2O)] (2), [TpMeMeCu(NO3)] (3) and [TpMeMeCu(ClO4)] (4) containing tris(3,5-dimethylpyrazolyl)borate (KTpMeMe), have been synthesized and fully characterized. The substitution reaction of 1 with thiourea was studied under pseudo-first-order conditions as a function of co...

Charge transfer complexes formed from the chemical reactions between phenytoin drug (phen) as a nelectron donor and π-acceptors like 2,6-dichloroquinone-4-chloroimide (DCQ), 2,6-dibromoquinone- 4-chloroimide (DBQ) and N-bromosuccinimide (NBS) were spectrophotometrically discussed and synthesized in solid form. Spectroscopic and physical data such...

Selenium containing nucleosides derived from some heterocyclic moieties such as Pyridineselenol, and pyridazineselenol is described herein. Ribosylation of selenol compounds were prepared in good yield by silyation of selenol derivatives with 1-O-acetyl-2,3,5-tri-O-benzoyl- β-D-ribofuranose followed by debenzoylation to afford the corresponding fre...

Metal chelates, [M(HL)2(H2O)2]X2 (where M= Mn(II), Co(II), Cu(II), Ni(II) or Zn(II), X= NO3–or Cl– and HL= Schiff base moiety), have been prepared and characterized by elemental analysis, magnetic and spectroscopic measurements (infrared, X-ray powder diffraction and scanning electron microscopy). Elemental analysis of the metal complexes was sugge...

Two vertical rotating immobilized cell reactors (VRICRs), one with the bacteria Bacillus sp. BDCC- TUSA-3 and the other with R. erythropolis, were constructed, with polyurethane foams as an at- tachment support. They were optimized for surfactin production and biodesulfurization (BDS) of dibenzothiophene (DBT), respectively. Then, the two bioreacto...

Six new adipic (adipH2 ) and sebacic (sebacH2 ) complexes of silver(I), gold(III), and platinum(IV) ions in the presence of selenium metal; [(adip)Ag2Se2O2 (OH)4Cl2 ] (1), [(adip)Au2Cl4Se2O2 (OH)4Cl2 ] (2), [(adip)Pt2Cl6 (H2O)2Se2O2 (OH)4 Cl2] (3), [(sebac)Ag2Se2O2(OH)4Cl2] (4), [(sebac)Au2Cl4Se2O2(OH)4Cl2] (5), and [(sebac)Pt2Cl6 (H2O)2Se2O2(OH)4C...

Synthesis of selenium-containing nucleoside analogues, derived from some heterocyclic moieties such as pyridineselenol, pyridazineselenol and quinolineselenol derivatives is described herein. These compounds were prepared in a concise and short synthetic route in good yields, by nucleophilic substitution reaction of different selenoheterocyclic com...

This paper has reviewed the chemical and biological impact resulting from the interaction between norfloxacin (norH) antibiotic drug and two lanthanide (lanthanum(III) and cerium(III)) metal ions, which prepared in normal and nano-features. La(III) and Ce(III) complexes were synthesized with chemical formulas [La(nor)3]�3H2O and [Ce(nor)3]�2H2O. La...

Mg(II), Ca(II) and Ba(II) metal chelates with formulas, [Mg(HL)2(Cl)2].6H2O, [Ca(HL)2(Cl)2].2H2O and [Ba(HL)2(H2O)2].Cl2.2H2O thatHL is the Schiff base moiety formed from condensation of 2-thiophenecarboxaldehyde with 2-chlorophenyl hydrazine have been prepared and characterized by elemental analysis and spectroscopic measurements (infrared and 1H-...

Multiresidue method for determination of 150 pesticides in grapes has been validated using quick, easy, cheap, effective, rugged and safe (QuEChERS) extraction method followed by liquid chromatography tandem mass spectrometry (LC-MS/MS) determination. The chosen pesticides are belonging to various chemical groups; they are registered in Egypt or mo...

Water is the most important resource of a country, and of the entire society as a whole, since no life is possible without water. It has this unique position among other natural resources, like minerals, fuels, forests, livestock etc. because a country can survive in the absence of any other resources, except this one. El-Serw Fish Farm situated on...

Different concentrations of three essential oil extracts (0.5, 1, 2, 3 and 4%) were used against Tetranychus urticae. (Koch) Chamomile; Chamomilla recutita (L.), proved to be the most efficient agent against T. urticae followed by Marjoram; Marjorana hortensis (L.), and Eucalyptus (Eucalyptus sp.) The LC50 values of these oils were 0.651 &1.17; 1,...

In this study biological and chemical treatments were applied to olive mill wastewater (OMW) to reduce its phenolic compounds and chemical oxygen demand (COD) contents in order to reduce its toxicity. The biological treatment was carried out by using two fungal isolates (Aspergillus wentii and Aspergillus niger) isolated from the OMW and compared w...

In the present study, method of solid-phase extraction followed by capillary gas chromatography coupled to mass spectrometry (SPE-GC-MS) was used for quantitative analysis of trace levels of phthalates in the most tow Egyptians traditional food (foul medams and koushary) and drinks (black tea and instant black coffee) and bottled water samples.Meth...

Monitoring of water resources for pesticide residues is often needed to ensure that pesticide use does not adversely impact the quality of public water supplies or the environment. In many rural areas and throughout much of the developing world, monitoring is often constrained by lack of testing facilities; thus, collection of samples and shipment...

The aim of the present study was to investigate the anti-schistosomal activity of colostral and mature camel milk on Schistosoma mansoni infected mice. Six weeks post infection, mean percentage of protection was detected through the hepatic portal vein. Glutathione-s-transferase (GST), alanine, aspartate transaminase (ALT and AST) and immunoglobuli...

Electrophoretic analysis of human milk proteins showed that most human milk proteins are found in the whey fractions, including α-lactalbumin, lactoferrin, secretory IgA (slgA), serum albumin and lysozyme which amounted to approximately 74.84% in colostral and 60.44% in mature human milk. Three out of the 5 proteins, lactoferrin, slgA and α-lactalb...

The Nile River is the principal source of drinking water for the 13 million inhabitants of Greater Cairo. During its transit through Egypt, the river receives large volumes of nonpoint and point source wastewater discharges. This presents a threat to the quality of the river water. In turn, it threatens Egypt's public and environmental health. Seve...

Polychlorinated biphenyls (PCBs) were measured before and after fillets of six bluefish (Pomatomus saltatrix) were cooked. Six cooking treatments were used with one fish per treatment. PCB concentrations ranged between 0.114 and 0.748 mg/kg in raw fish and between 0.102 and 0.315 mg/kg in cooked fish. The average for the raw fish was 0.31 and for t...

Polychlorinated biphenyls (PCBs) were measured before and after fillets of six bluefish (Pomatomus saltatrix) were cooked. Six cooking treatments were used with one fish per treatment. PCB concentrations ranged between 0.114 and 0.748 mg/kg in raw fish and between 0.102 and 0.315 mg/kg in cooked fish. The average for the raw fish was 0.31 and for t...