Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Ahmad Rafik EL-Mahdy"'
Publikováno v:
Procedia Manufacturing. 22:280-287
The nutritional and environmental conditions have a great influence on chitinase production, due to the receptor-inducer system that control enzymes production.in these sense, the aim of this study was to screen several nitrogen sources and optimize
Publikováno v:
Procedia Manufacturing. 22:413-419
Crustaceous wastes such as shrimp, crab and lobster, are chitinous solid waste of the shellfish processing industry. to select the best substrates for bacterial growth and enzyme activity, different poor and enriched media were investigated, furtherm
Publikováno v:
Procedia Engineering. 181:146-152
An aerobic Gram variable rod shaped polarly flagellated marine bacterium abbreviated R2 attracted our attention not by its hyper chitinolytic activity but also by its multiple enzymes production (protease, gelatinase, lipase, amylase, dextranase,algi
Publikováno v:
Procedia Technology. 22:465-470
Bacillus sp. R2purified chitinase was subjected to the effect of metal ions, chemical agents, and organic solvent on its activity, the results showed that K+, Mn2+, Na+, Mg2+ and Ca2+ stimulated chitinase activity by 2,4,7,15 and 21% respectively whe
Publikováno v:
Procedia Technology. 22:471-477
The purified chitinase of Bacillus sp. R2 showed a molecular weight of 41.68 KDa, an optimal pH and temperature of 7.5 and 40 °C respectively. The enzyme was stable between pH 7 to 8 but it lost 57% and 62% of its initial activity at the pH 6 and 9
Publikováno v:
New Biotechnology. 25:S46
Publikováno v:
Procedia Technology. :958-964
Bacillus sp. R2 chitinase was purified to homogeneity using ammonium sulphate precipitation at 80% saturation, affinity chromatography on swollen crab shell chitin column, and followed by gel filtration chromatography on Sephadex G-100; the enzyme wa