Phytochemical and Antimicrobial Properties of African peach (Sacocefalus latifolius)
Abstract This study includes phytochemical screening, quantification of secondary metabolites, thin-layer chromatography (TLC) and antimicrobial assay of African peach (Sarcocephalus latifolius). The phytochemical analysis revealed the presence of alkaloid, flavonoid and saponin at various quantities with saponin more abundant amongst others like tannin, glycoside and phenols that are present. All the extracts were tested for antimicrobial activity with ethanol extract and water extract...
Phytochemical and Antimicrobial Properties of Lavandula angustifolia
Abstract: This present study deals with the quantitative and qualitative phytochemical screening, the antimicrobial properties and thin layer chromatography of Lavandula angustifolia leaves extracts. These were achieved using the cold maceration method of extraction involving hexane, water (aqueous) and ethanol, to ensure that a wide polarity range of components are extracted. Alkaloid, phenol, flavonoids, tannins, terpenes, glycosides and steroids were observed present in the leaves ...
Quantum chemical calculations on SiF4 and it's protonated analogues
Abstract: For every heteronuclear molecule, protonation can occur at more than one site thus giving rise to more than one proton affinity. Experimentally, only one proton affinity (PA) value is reported for a molecule and the experiment does not specify the site for the protonation. In the present work, quantum chemical calculations are carried out on SiF4 and its possible protonated analogues (HF4Si+ and HSiF4 + ) by employing several computational chemistry methods including the M...
COMPARATIVE STUDIES OF THE BIOSORPTION OF HEAVY METALS ( LEAD & ZINC) USING TEA LEAVES (CAMELIA SINENSIS) & TEA FIBRE AS ADSORBENT
Abstract: This research has helped us to ascend from the initial two exploratory studies to a more advanced general conclusion and theory that tea leaves (Camellia sinensis) has a great potential for Pb(ii) and Zn uptake, as such, a more suitable Low-cost adsorbent for the effective removal of Pb (II) and Zn from industrial effluents waste water than tea fibre. This is coined from the results of the different biosorption studies carried out as a function of contact time, initial metal...
Kinetic studies of the biosorption of lead and zinc from solution using tea fibre
Abstract: This paper presents a biobsorption study on Zn and Pb(II) from dilute aqueous solution using tea fiber as the biosorbent. The biosorption study was carried out as a function of contact time, initial metal ion concentration and biosorbent dosage. The residual Zn and Pb(II) in solution were determined using atomic absorption spectrophotometer. The biosorption was also time dependent as maximum biosorption was obtained after 10 and 20 min, for both lead and zinc respectively....
Kinetic studies of the biosorption of lead and zinc using tea leaf
Abstract: In this research work, Low-cost adsorbent was prepared from Camellia sinensis, physicochemical characteristics and the effective removal of Lead and Zinc from an aqueous phase were evaluated.The Camellia sinensis adsorbent precursor was characterized in terms of adsorbent dose, initial concentration and contact time. Aqueous phase adsorption studies were carried out under kinetic studies of pseudo first order, pseudo second order kinetics and the residue concentration of Lea...
Computational studies of Sulphur trioxide and its protonated analogues
This article reports quantum chemical calculations on sulphur trioxide (SO3) and its protonated analogues (HSO3 + and HOSO2 + ) by employing six different computational methods. This covers the simple Hatree Fock (HF) method, coupled cluster method, the Gaussian-4 (G4) compound method amongst others with two different basis sets (6-311++G** and cc-pVDZ). Optimized geometries, bond distance, rotational spectroscopy, dipole moment, proton affinity, vibrational spectroscopy and vibration...