Oriental Journal of Chemistry

Journal Information
ISSN / EISSN: 0970020X / 22315039
Total articles ≅ 3,090

Latest articles in this journal

P. Suneetha P. Suneetha,
Oriental Journal Of Chemistry, Volume 38, pp 1311-1313; https://doi.org/10.13005/ojc/380531

Using the U(2) Lie algebraic approach, it is determined that the vibrational energies of the aluminumdihydride (AlH2) molecule up to the fifth overtone and reported the combinational bands up to the third harmonic.In this approach, the algebraic parameters and operators are used to represent the Hamiltonian operator to calculate the vibrational energies.
K. Senthil Murugan,
Oriental Journal Of Chemistry, Volume 38, pp 1174-1182; https://doi.org/10.13005/ojc/380512

N ̶ Benzylidene ̶ 4 ̶ Methoxyaniline (NB4MA) schiff base was synthesized and investigated corrosion behavior of mild steel (MS) in 1M HCI and 0.5M H2SO4. The corrosion efficiency studied by means of mass loss and electrochemical techniques. The electrochemical studies confirm that Ecorr displacement about 32mV confirms anodic and cathodic type of inhibitor. The positive direction of corrosion potential curves confirmed that adsorption efficiency on metal surface. Langmuir adsorption isotherm was observed. Electrochemical impedance studies (EIS) exposed that inhibition effectiveness enlarged with even increasing concentration of Schiff base and found inhibition capacity 90 – 95%. Furthermore, thermodynamic parameters of adsorption were found which elaborates that increasing ΔG0ads parameter since favorable interaction behavior between mild steel and inhibitor causes efficient adsorption. The morphology studies revealed that synthesized Schiff base has strong affinity to adhere on mild steel and improve corrosion efficiency against acidic media. The quantum chemical parameter also confirmed that electrons distribution and efficiency of Schiff base.
, Dipak Tukaram Tayade
Oriental Journal Of Chemistry, Volume 38, pp 1261-1265; https://doi.org/10.13005/ojc/380523

For capturing CO2 from flue gases after combustion, amino acid salt solutions are considered superior solvents over alkanolamine due to their certain advantages. In the present work, the viscosities measurements of aqueous sodium and potassium salt solutions of L-leucine were made at 298.15, 303.15, 308.15, and 313.15 K, and their concentrations range from 0.01 to 0.15 mol L-1. Thereafter, the Jones-Dole coefficient (B), temperature derivative of B i.e. (dB/dT), the free energy of activation, the enthalpy as well as the entropy of activation of viscous flow were derived from experimental data on viscosity.
S. S. Sonune, S. P. Moharir, M. G. Undegaonkar, A. S. Kirdant
Oriental Journal Of Chemistry, Volume 38, pp 1300-1305; https://doi.org/10.13005/ojc/380529

The novel Ligand was prepared by irradiation of 2-amino-1-methyl benzimidazole and 3’,5’-dimethoxy-4'-hyroxy acetophenone, in scientific microwave oven and its transition metal complexes were prepared from Ni(II), Mn(II), Cd(II), Fe(III), Cu(II), Zn(II), Co(II), Ag(I) salts. The synthesized Schiff base ligand and its complexes were characterized by elemental analysis, spectral technics such as UV-Visible, FT-IR, 1HNMR, LC-MS and Thermo gravimetric analysis. The biological activity of novel ligand and its complexes were tested against Staphylococcus aureus, Salmonella typhi and Aspergillus Niger.
M. Priya M. Priya, M. Senthil M. Senthil, S. Kalai Selvi, S. Ranjitha S. Ranjitha
Oriental Journal Of Chemistry, Volume 38, pp 1290-1295; https://doi.org/10.13005/ojc/380527

Mild steel (MS) is the material that is frequently used in various sectors because of its specific properties like ductility and malleability, however it corrodes readily when exposed to corrosive environments. Inhibition is the best method to prevent corrosion, since it may be adjusted or added in place without interrupting a process. The present study focused on the thermal behavior of Crab Shell extract (CSE) as corrosion inhibitor on the surface of the MS in 0.5M and 1M sulphuric acid medium. Temperature study was employed to test the inhibitory action of the extract on MS using weight loss measurement. The effectiveness of inhibition declines with the rise of temperature. In 0.5M H2SO4 at 303K, the maximum efficiency was observed. The nature of adsorption in both the acidic medium follows El-Awady adsorption isotherm. The activation and thermodynamic study revealed that the reaction is spontaneous in nature. The inhibition process is endothermic which is confirmed by the positive enthalpy values.
Oriental Journal Of Chemistry, Volume 38, pp 1266-1275; https://doi.org/10.13005/ojc/380524

The present investigation aimed to determine the oxidative potential, sun protection factor value, and half-maximal inhibitory concentration of rosemary essential oil and tea tree essential oil. These two essential oils have gained popularity as active ingredients in many cosmetic preparations due to their antioxidant activity, whether used individually or in combination. Gas chromatography-mass spectroscopy is used to identify the presence of different phytochemical constituents in essential oils. The GC-MS (Gas chromatography-mass spectroscopy) chemical analysis of tea tree oil revealed 34 and rosemary oil revealed 35 volatile chemical components with sesquiterpene hydrocarbon, monoterpenes (42.77%), and alcohols (41.01%) as major detected classes. The 2, 2-diphenylpicrylhydrazyl (DPPH) and nitric oxide-free scavenging activity techniques were used to investigate the antioxidant capacity of these oils. It was found that both tea tree and rosemary oil have the potential to slow down skin aging through their anti-oxidative properties using the approach of free radical scavenging activity. The UV spectroscopy method was used to determine the sun protection factor, and the sun protection values of rosemary and tea tree oil were found to be 8.45 and 6.85, respectively. Rosemary oil was an extremely promising tea tree essential oil for anti-aging and sunburn prevention. The study's findings indicated that rosemary and tea tree essential oil can both offer a synergistic sun protection factor effect, antioxidant property, and anti-aging or extra activity of cosmetic preparations.
Kamalakar Kailash Wavhal,
Oriental Journal Of Chemistry, Volume 38, pp 1314-1319; https://doi.org/10.13005/ojc/380532

α-Aminophosphonate and their derivatives are biologically potent and have received considerable attention in a recent research scenario. The main reason is that they show triguing biological activity. α-Aminophosphonate derivatives are gaining a lot of importance in medicinal chemistry due to their application as enzyme inhibitors, herbicides, antibiotics, pharmaceutical agents and inhibitors of Excitatory Post-Synaptic Potential(EPSP) synthesis, and HIV Protease. It is also important in ati-cancer, anti-HIV, antithrombotic and antibacterial, antioxidant activity. Unfortunately, these compounds have certain limitation such as extraction, purification, of bioactive molecule and their minimum yields. For this reason, many scientists have been orienting their research towards the synthesis of molecules as a new tool to overcome this problems he prime focus of this work is the combination of three reactant derivative of benzaldehyde derivative of aniline, and diethyl phosphonate to form α-aminophosphonates derivatives by multicomponent reaction(KFR). The novel nano-catalyst i.e. polyanilinedoped with manganese (PAni-Mn) was prepared. The catalyst shows excellent catalytic activity, high yields, short reaction times, easy synthesis. The PAni was fully characterized by X-ray diffraction, TEM, SEM, and FT-IR technique.
, K. Shenbagam K. Shenbagam, R. Kanmani
Oriental Journal Of Chemistry, Volume 38, pp 1320-1327; https://doi.org/10.13005/ojc/380533

Inorganic nano-metal oxides may be efficient replacements for organic antibiotics that are drug-resistant due to their wide range antibacterial activity towards pathogenic and mutagenic bacterial species. In this work, zinc and copper oxide nanoparticles were produced using Catharanthus roseus flower extract. It is a feasible alternative to other techniques because the biosynthesized nanomaterials made from plant extract are non-toxic and harmless to the environment. The X-ray diffraction (XRD), scanning electron microscopy (SEM), UV-Vis, and Fourier transform infrared spectrometry (FT-IR) investigations were achieved to confirm CuO and ZnO nanoparticles produced. In the DPPH experiment, the antioxidant properties of CuO and ZnO nanoparticles performed well. Gram-positive and gram-negative microorganisms are both effectively combatted by the produced copper and zinc oxide nanoparticles. The findings suggest that CuO nanoparticles were more effective towards microorganisms than ZnO nanoparticles.
S. Durgadevi S. Durgadevi, , S .Vidhya S .Vidhya, F. Janeeta Priya, P. Lydia Festus Kanmani
Oriental Journal Of Chemistry, Volume 38, pp 1276-1283; https://doi.org/10.13005/ojc/380525

Andrographis echioides leaves were used to isolate a flavonoid (medicarpin) that inhibited mild steel corrosion in 1M HCl. Preliminary phytochemical analysis revealed that the A.E leaves were rich in flavonoids. Following a room temperature extraction with methanol, the constituents were fractionated using a Soxhlet apparatus. Chromatographic techniques were used to isolate the constituents from the leaves of Andrographis echioides. Flavonoid compounds were characterized using Spectral studies. Weight loss and corrosion studies were investigated the inhibition activity of an isolated flavonoid (medicarpin). The inhibition efficiency of isolated flavonoid was highest (85.78 percent) at 800 ppm concentration, according to weight loss and electrochemical measurements. The influence of temperature on the corrosion activities of base metal was calculated in the temperature range 293-303K. The inhibitory activity increases with rising inhibitor concentration but decreases with rising temperature. The activation and free energies for the inhibition response sustain the method of physisorption. The adsorption of isolated flavonoid on the base metal is an endothermic process and it follows the Langmuir adsorption isotherm. The potentiostatic study illustrates that isolated flavonoid is a mixed type inhibitor. Surface Morphology examination by SEM and EDAX to reveals the adherence of isolated flavonoid on the mild steel surface.
N. Swathi N. Swathi, N. V. S. Venugopal
Oriental Journal Of Chemistry, Volume 38, pp 1244-1249; https://doi.org/10.13005/ojc/380520

One of the dietary flavonoids which can be found in a variety of vegetables and fruits is Quercetin (3,3′,4,5,7-pentahydroxyflavone).Quercetin reduce infection risk and also has unique biological property which improves the physical performance. The current research work describes the extraction and characteristic of quercetin present in carrot (Daucus carota sp. sativus) and grapes (genus vitis). A liquid – solid extraction method of quercetin contained in carrot and grapes was developed, in which Quercetin is extracted from a solid mixture using a liquid solvent (methanol). Determination of Quercetin is studied by using High performance liquid chromatography. The separation study was performed on Zodiac C18, 250mmx 4.6mm, 5µm column, detection at 280nm and flow rate applied 1mL/min. The limits of detection(LOD) and quantification(LOQ) parameters were in the ranges of 0.1–0.3 and 0.3–1.0 μ g/ mL respectively. The results of carrot and grape meet the specified specification limit. The detection of the active substance in carrot and grapes using the HPLC method has the advantage of being simple, fast, and accurate and the reported method was validated.
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