Journal of Chemistry

Papers

Voulume: 6
Issue: 3
Article No. 1
Polarographic study of mixed-ligand complexes of In (III) with Citrulline and Hippuric acid at different Temperatures
Santosh Kumar
Department og Chemistry, Universtiy of Rajasthan, Jaipur- 3022055 (INDIA)
O.D. GUPTA (gupata-od@yahoo.com)
Department og Chemistry, Universtiy of Rajasthan, Jaipur- 3022055 (INDIA)
Abstract :

In (III) has been investigated with Citrulline and Hippuric acid as mixed-ligand complexes at dropping mercury electrode by the polarographic technique. The stability constants of In(III)-Citrulline and In(III)-Hippuric acid were determined first by the DeFord and Hume's method. Later the In(III) was studied with mixed-ligand Citrulline and Hippuric acid by the Schaaf and McMaster's method. The reduction of all mixed-ligand complexes has been found to be quasirreversible and diffusion controlled. Three species of mixed-ligand complexes MXY, MX2Y and MXY2 have been determined and found to be more stable than that of simple complexes. The detailed temperature effect has been also studied.

Keyword : mixed-ligand complexes
DOI : juc
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Article No. 2
Novel bis-azo acid dyes and their application on wool and nylon fibres
G.M.Patel (grmapatel@gmail.com)
Department og Chemistry, V.P. & R.P.T.P. Science College, Vallabh Vidyanagar- 388 120, Gujrat (INDIA)
K.D. Patel
Department og Chemistry, V.P. & R.P.T.P. Science College, Vallabh Vidyanagar- 388 120, Gujrat (INDIA)
G.J. Kharadi
Department og Chemistry, V.P. & R.P.T.P. Science College, Vallabh Vidyanagar- 388 120, Gujrat (INDIA)
Abstract :

Bis-azo acid dyes were prepared by the coupling of 4,4'-methylene bis(anthranilic acid) with various pyrazolone coupling components. The resultant dyes were characterized by elemental analyses, IR and NMR spectral studies. The UV-visible spectral data have also been discussed in terms of structural property relationship. The dyeing assessment of all the dyes was evaluated on wool and nylon textile fibres. The results show that a better hue was obtained on wool and nylon fibers. The results of the anti-bacterial properties of the bis-azo acid dyes revealed that the toxicity of these dyes against bacteria is fairly good.

Keyword : antimicrobial activity,
DOI : juc
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Article No. 3
Production and characterization of รก-amylase from Aspergillus Niger
Shivaji Bole (shivaji_bole@rediffmail.com)
Department of Pharmaceutical Chemistry, Nargund College of Pharmacy, Bangalore, Karnataka 560085 (INDIA)
Shachindra. L.N.
Department of Pharmaceutical Chemistry, Nargund College of Pharmacy, Bangalore, Karnataka 560085 (INDIA)
L.V.G. Nargund
Department of Pharmaceutical Chemistry, Nargund College of Pharmacy, Bangalore, Karnataka 560085 (INDIA)
K. R. Maruthi
Department og Biotechnology, Shri Dharmasthala College of Science, Ujire, Karnataka (INDIA)
Abstract :

Alpha amylase was isolated and characterized from Aspergillus niger using source soregum sample. The maximum activity 0.6237µmol/ml/min was obtained and Km value of enzyme was 5.8 x 10-5. The enzyme of Aspergillus niger could produce alpha amylase under solid state fermentation. The optimal conditions for maximal amylase production, includes pH 6.9, temperature 37oC and salt 10 Mm concentration. The enzyme activity was determined by DNS method. Using standard maltose curve.

Keyword : enzyme activity
DOI : juc
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Article No. 4
Study of Chelation behaviour of Glycyl Glycine with Cu(II), Ni(II), Co(II) and Zn(II) by solution electrophoresis
Pawan Kumar Singh
Chemical laboratory Kashi Naresh Govt. Post Graduate College, Gyanpur, Sanr Ravi Das Nagar, Bhadohi -221304 (INDIA)
Satyendra Singh
Abstract :

Modified electrophoresis technique viz. solution electrophoresis has been employed for the study of the metal ligand equilibira in solution. The method is based upon the migration of metal ion under electric influence in electrophoretic tube with variation in pH of the black ground electrolyte (ionic strength 0.1). The plot of pH Vs absorbance difference reveals the nature of complexation and help in calculating its equilibrium constants. The present work report the result on the binary viz. Cu(II), Ni(II), Co(II) and Zn(II)-Glycyl Glycine complexing system.

Keyword : electrophoresis technique
DOI : juc
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