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[…] with the time required varying with the product of the studies. The half-lives of the enzyme at the two peaks were obtained to be 770.16 mins at 30ºC for peak A and 330.07 mins at 40ºC for peak B, the activation energy for inactivation (Ea(inact)) calculated from the Arrhenius plot were found rto be […]
[…] ACID AND ITS CO(II) AND NI(II) COMPLEXES ABSTRACT 3,5-Bis-benzoic acid (H2B) and its cobalt(II) and nickel(II) complexes were synthesized and characterized via: electronic, IR, 1H NMR and 13C NMR. Job’s continuous variation method was used to determine the mole ratio for both metal complexes. Solvent extraction studies were carried out on H2B in 5% […]
[…] by removal of mucilage from the seeds and subsequent cracking of the seed shells, and de-pulping of the peels. The seed cotyledons and peels were blanched at 1000C for 2,4 and 6 mins, wet milled with water in 1: 1.5 ratio, sieved with muslin cloth to obtain the extracts which were pasteurized at 800C […]
[…] acid in situ. The acid chloride derivatives on condensation with 3-aminopyridine gave corresponding acetamide in good to excellent yield. The compounds were characterized by FTIR, 1H-NMR and 13C-NMR and screened for antibacterial, antifugal and antioxidant activities. The result revealed that the compounds possess antibacterial activities.One the compounds, 2-propapnoic acid had better antibacterial activities than […]
[…] has a hexagonal crystallite structure and further showed that the crystallite size supported by Scherrer’s equation increase with increasing annealing temperature (0.536 nm, 0.541nm, 0.557 nm at 1000C, 1500C and 2000C) respectively. The EDX analysis revealed the elemental compositions of samples and confirmed the presence of Zn and O. The results of the optical […]
[…] give the monocation +. The monoalkylated derivative provided the enabling condition for a second intermolecular nucleophilic attack by another molecule of yielding the bridging Pt4 aggregate spanned by SCH2CH2NHC(O)N(CH2CH2)2NC(O)HNCH2CH2S. The resulting products was isolated as the tetraphenyl borate (BPh4-) salts and characterized by Electrospray Ionization Mass Spectrometry (ESI-MS), FT-IR, 1H, 13C and 31P {H} NMR.