M. E. Khan’s research while affiliated with Federal University Lokoja and other places

The study was carried out to determine the nutritional constituents, anti-nutritional composition, antimicrobial activity and phytochemical composition of Pleurotus ostreatus. Samples were determined in triplicates to ascertain the nutritional quality of the mushrooms. The proximate analysis revealed that Pleurotus ostreatus contains moisture (27.0), Ash content (29.8) crude fibre (9.20), crude protein (28.74), crude fat (3.18), carbohydrate (2.08). Phytale (++), oxalate (+++) are the anti-nutritional factors detected. The screening of bioactive compounds confirmed the presence of carbohydrates, tannins, steroids, glycosides, flavonoids, and alkaloids. Antimicrobial analysis on several bacterial species tested revealed inhibitory effects against Streptococcus faecalis, Salmonella typhi, Escherichia coli, and Staphylococcus aureus. The inhibitory zones (ZI), the minimum inhibitory concentration (MIC),and the minimum bactericidal concentrations (MBC), for the tested microbes were:- S. aureaus ; 20mm, 25mm, and 16mm Bacillus subtilis 14mm, 17mm and 30mm, Pseudomonas aeruginosa 15.5mm, 20mm and 26mm, Salmonella typhi 10.5mm, 17.5mm and 12mm, mL respectively. Candida albican, the only fungus did not show any. The observed antimicrobial activities of the extracts may be due to the presence of these bioactive compounds. Pleurotus ostreatus can therefore be used as an antimicrobial agent against some of the inhibitory bacteria. The findings of the nutritional analysis indicated that Pleurotus ostreatus contains essential and valuable nutrients that are beneficial to the human body.

The discovery of lupeol, a triterpenoid compound (C30H50O), in the ethyl acetate leaf extract of Justicia secunda (Blood root), has opened doors to extensive research and development opportunities in natural product-based pharmaceuticals. Lupeol’s versatile pharmacological properties, including anti-inflammatory, anticancer, antidiabetic, and antiviral effects, make it a compelling candidate for drug development. To fully harness its potential, a comprehensive understanding of lupeol’s structural and chemical attributes is crucial. Through quantum chemical calculations using the GAUSSIAN 09 suite of programs, we determined the optimized geometry, IR frequencies, bond distances (R), bond angles (A), dipole moments, HOMO-LUMO and other molecular parameters for this solitary molecule. The remarkable accuracy and reliability of computational techniques in predicting the properties of systems and reactants are evident in the consistently favorable results. A strong concordance and consistency between the experimental and computational outcomes further reinforces the credibility of our findings. This study offers a means to explore lupeol’s molecular behavior, providing insights that can guide future drug development efforts rooted in this promising natural compound.

The food insecurity in the world/Nigeria paves the way for more research to remedy human hunger /diseases caused by weather conditions / greenhouse effects. This study compares and validates the proximate composition, the anti-nutritional and anti-microbial screening of crude methanol extracts of three Nigerian medicinal plants; Lactuca taraxacifolia; [ moisture (10.68 ± 00%), Ash (19.48 ± 0.03%), Crude fibre (39.16 ± 0.10%), Crude Protein (7.97± 0.03%), Lipid (11.77± 0.02%), Carbohydrate (29.91± 0.13%), Oxalate > Phylate > Tannin; the inhibition zones for the most effective concentration of 50 mg / mL : Staphylococcus. aureus 45.66 ± 0.00, Escherichia coli 49.40 ± 0.01, Salmonella typhi 42.30 ± 0.00, Streptococcus faecalis 41.90 ± 0.01]. Aframomum melegueta; {Moisture (4.36 ± 0.04 %), Ash (6.75 ± 0.03%), Crude fibre (19.92 ± 0.11 %), Protein (5.48 ± 0.04 %), Crude fat (3.60 ± 0.13%), Carbohydrate (59.49 ± 004%), Tannin > Phylate > Oxalate; S. aureus 20.22 ± 0.01, E. coli 30.21 ± 0.30, S. typhi 15.24 ± 0.11, S. faecalis 15.61 ± 0.13} and Ocimum gratissimum; [Moisture (12.43 ± 0.22%), Ash (17.77 ± 0.04%), Fibre (19.91± 0.15%), Protein (1.92 ± 0.26%), Fat (11.80 ± 0.02%), Carbohydrate (42.63 ± 0.06%), Tannin > Phylate > Oxalate; S. aureus 35.03 ± 0.00, E. coli 34.22 ± 0.71, S. typhi 32.02 ± 0.01, S. faecalis 30.01 ± 0.42]. Considering the proximate analyses, it’s seen that, A. melegueta carbohydrates is the greatest followed by O. gratissimum, then L. taraxacifolia. Their anti-nuttherapeutics and nutrients, especially during this era of food

Quantum chemical calculations have been carried out on C4H4N2 isomeric molecular species using the G4 method and compared with experimental values were available, probing parameters like thermochemistry, structural parameters (e.g. Bond length, bond angles), rotational constants, vibrational spectroscopy and dipole moments. Pyrimidine was discovered to be the most stable of all the isomers with \DeltafH0 =37.1 kcal/mol. A critical analysis showed high correlation and consistency between the computed and experimental values of all the parameters under study and therefore providing the needed rationale to validate the values provided for the isomers which do not have available experimental data.

This research isolates, characterizes, and studies the computational and frequency calculations of emodin, extracted from the leaf extract of Pteridium acquilinum leaves using methanol. Vacuum liquid and tin layer Chromatography was used for the purification of the molecule. The (VLC purified), fraction was analyzed by Nuclear magnetic resonance (NMR) and the chemical structure of the compound isolated (anthraquinone), was confirmed by 1H & 13C-NMR analyses as emodin (C15H10O5). Computational and frequency studies have been done on the isolated molecule. Optimized geometry, IR frequencies, Bond distances (R) and angles (A), Dipole moments and other parameters have been computationally determined for the isolated molecule from quantum chemical calculations using the GAUSSIAN 09 retinue programs. Experimentally determined and computationally measured IR frequencies agree perfectly with each other. Computational studies can be used to predict unobserved chemical phenomena like design of new drugs and materials such as the positions of constituent atoms in relationship to their relative and absolute energies, electronic charge densities, dipoles, higher multiple moments, vibrational frequencies, relativity or other spectroscopic quantities and cross sections for collision with other molecules. This is the first time this anthraquinone, [emodin], with most of the parameters examined is reported from P. aquilinum.

Manganese(II) complexes of 2-{[(2-hydroxy-5-nitrophenyl) methylidene]amino} nicotinic acid derived from o-phenylenediamine and 5- nitrosalicaldehyde were synthesized and characterized by elemental analysis, using IR, 1HNMR, 13CNMR, and GCMS. They were screened against known disease causative microbes to establish their potentials as antimicrobial agents compared with national standards drugs. Results showed that, a Schiff base exhibited antimicrobial action against all the bacteria and most of the fungi with exception of Candidas. albicans isolate, which exhibited zero diameter zone of inhibition. It was also found that the synthesized Schiff base exhibited two digits purity range, implying that it was relatively stable. The metal complex was found to be more susceptible in overall biological activity due to the structural stability, showing their potency in pharmacognocy.