Advanced Journal of Microbiology Research

Abstract: Dentex juveniles of initial live weight 5 - 6 g and 108 days old after hatching, were fed three different diets for ten weeks (moist pellet (MP), imported dry pellet (IDP) and locally dry pellet (LDP)) containing three different lipid levels (26, 21 and 10% respectively) and crude protein levels (46, 45 and 47% respectively). Fatty acid composition showed that, DHA and EPA contents of moist pellet are higher than those of imported and locally dry pellets. DHA/EPA ratios of muscle were of 1.04 ± 0.00 (MP), 1.48 ± 0…

Abstract: The study of enzymes occupies a very important position in biological, medical and industrial research. Also, the satisfactory performance of an enzyme assay provides a good introduction to biochemical techniques. This experiment presents a good introductory project to students for the estimation of the kinetic parameters of an enzyme. The spectrophotometric/colorimetric assay of acid phosphatase is very simple with a readily available substrate, p-nitrophenyl phosphate, which can easily be purchased, and other com…

Abstract: Experiments were done to study the bioremoval/ biosorption of dis-azo dye by Aspergillus niger strain 20 in two concentrations using 5 liter bioreactor at five aeration rates. The experimental results are compared for various operating conditions. The dye used was direct brown and the inlet air flow rate was: 1/8, ¼, ½, 1, 2 v/v/min. The aeration rate of ½ v/v/min yielded 9.2 g fungal biomass and removed 72% of the dye. Increasing of the aeration rate to 2 v/v/min increased the removal to 77%, whereas the biomass w…