Version-1 (Nov–Dec 2016)
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| Paper Type | : | Research Paper |
| Title | : | Production and Optimization of Protease from Aspergillus niger and Bacillus subtilis using Response Surface Methodology |
| Country | : | Nigeria |
| Authors | : | M. A. Milala || I. A. Jatau || A. A. Abdulrahman |
Abstract: Proteases are enzymes that perform proteolysis. In this study, Response Surface Methodology was used for the production of protease from Aspergillus niger and Bacillus subtilis. This was achieved by isolating the Fungus and Bacterium from contaminated soil and bovine intestinal sample and screening for protease activity was carried out using casein as substrate. Optimization of different conditions for maximum protease activity (pH, Temperature, Carbon source and Mineral Salts) and Response of microorganisms on mineral salts in the culture medium was observed. The time course for the production of protease by both isolates was found to be maximum at 48 hours.............
Key words: Protease; Casein;Aspergillus niger; Bacillus subtilis; Response surface methodology
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| Paper Type | : | Research Paper |
| Title | : | Effect of Some Antioxidants on Some Biochemical Parameters and Growth Performance of Nile Tilapia (Oreochromis Niloticus) |
| Country | : | Nigeria |
| Authors | : | Abdel-Aziz, F. ABDEL-AZIZ || Neven, S. || Amany A. El-Shebly |
Abstract: The present study was conducted to evaluate the effect of antioxidants (vitamin C, vitamin E and Selenium) added to the basal diet on some blood parameters and growth performance of Nile tilapia (Oreochromis niloticus). Basal diet (25% protein) was formulated as control. The experiment design included 8 treatments in duplicates Antioxidants were added to the basal diet as follow (1- control (basal diet), 2-basal diet+ vit C, 3-basal diet+ Vit E, 4-basal diet + Se, 5-basal diet + vitamins C& E, 6-basal diet +vitamins C &Se, 7-basal diet +vitamins E& Se and 8-basal diet + vitamins C, E &Se)...............
Key words: Nile tilapia, antioxidants, growth performance, blood parameters
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| Paper Type | : | Research Paper |
| Title | : | Evaluation and Selection of Autochthonous Lactic Acid Bacteria as Starter Cultures from Goat's Raw Milk |
| Country | : | Morocco |
| Authors | : | Zaaraoui L. || Ounine K. || Elhamdani M. || Benali A || Oukassou M. || Bouksaim M |
Abstract: A total of twenty five indigenous lactic acid bacteria (LAB) isolates were collected from raw goat's milk Oulmes breed in AIT Ichou region (located in the Middle Atlas, Morocco). Among these twenty-five isolates, seven strains of LAB were selected for their significant acidifying activity and were identified using 16S rRNA gene sequencing. The genetic analysis revealed that all the strains were identified as Lactococcus lactis. These strains have shown some interesting technological properties, as a notable proteolytic activity especially C24 (2.37±0.03mMGlycine)...............
Key words: Lactic acid bacteria; goat's milk; lactococcus lactis; acidifying activity; starter culture
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