Thermo-alkali-stable lipase from a novel : statistical optimization, enzyme purification, immobilization and its application in biodiesel production.

The influences of nutritional components affecting lipase production from the new using wheat bran as substrate were studied by employing Plackett-Burman and central composite statistical designs. Out of the 11 medium components tested, sucrose, KHPO and MgSO at final concentrations of 3.0, 1.

Heavy Metals Biosorption from Aqueous Solution by Endophytic of L. Derived from Heavy Metals Habitats.

The ability of dead cells of endophytic of L. grown in heavy metals habitats for bioremoval of cadmium (Cd), copper (Cu), and lead (Pb) in aqueous solution was evaluated under different conditions. Whereas the highest extent of Cd and Cu removal and uptake occurred at pH 8 as well as Pb occurred at neutral pH (6-7) after equilibrium time 10 min.

Enzymatic synthesis using immobilized Enterococcus faecalis Esawy dextransucrase and some applied studies.

Dextrans enzymatic synthesis by immobilized Enterococcus faecalis Esawy dextransucrase was studied. Different parameters, such as: enzyme protein concentration (EPC), substrate concentration (SC), temperature and reaction time were evaluated. EPC played a fundamental role in controlling dextran molecular size with 0.

Covalent immobilization of Enterococcus faecalis Esawy dextransucrase and dextran synthesis.

Enterococcus faecalis Esawy dextransucrase was immobilized in Fe(3+)-cross-linked alginate/carboxymethyl cellulose (AC) beads. The gel beads were modified with polyethylenimine (PEI) followed by glutaraldehyde (GA) to form Fe(3+) (ACPG) beads. Fe(3+) (ACPG) was characterized using FTIR and DSC techniques.

Mycotoxin production in wheat grains by different Aspergilli in relation to different relative humidities and storage periods.

Four different Aspergilli (Aspergillus oryzae, A. parasiticus, A. terreus and A.