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The discharge of bromate, a suspected carcinogen, will be restricted in the near future. To assess the possibility of biotechnological treatment of bromate-containing wastewaters, the removal of bromate by chlorate-reducing microorganisms was studied. The removal of bromate and chlorate was...
Cells of the moderately thermophilic Bacillus sp. UG-5B strain, producing nitrilase (EC18.104.22.168), which converts nitriles directly to the corresponding acid and ammonia, were immobilized using different types of matrices and techniques. A variety of sol-gel silica hybrids were tested for...
A thermostable xylanase gene, xyn10A (CAP0053), was cloned from Clostridium acetobutylicum ATCC 824. The nucleotide sequence of the C. acetobutylicum xyn10A gene encoded a 318-amino-acid, single-domain, family 10 xylanase, Xyn10A, with a molecular mass of 34 kDa. Xyn10A exhibited extremely high...
Two new fungal strains, namely Paecilomyces variotii and Exophiala oligosperma , were isolated on toluene as the sole carbon and energy source, mineralizing the substrate into carbon dioxide. Fungal strains isolated so far on such a pollutant and completely degrading it are very scarce. Both...
Streptomyces sp. strain g10 exhibited strong antagonism towards Fusarium oxysporum f.sp. cubense (Foc) races 1, 2 and 4 in plate assays by producing extracellular antifungal metabolites. Treating the planting hole and roots of 4-week-old tissue-culture-derived ‘Novaria’ banana plantlets with...
During L -lactic acid fermentation by Rhizopus oryzae , increasing the phosphate level in the fermentation medium from 0.1 g l −1 to 0.6 g l −1 KH 2 PO 4 reduced the maximal concentration of L -lactic acid and fumaric acid from 85 g l −1 to 71 g l −1 and from 1.36 g l −1 to 0.18 g l...
Chitin deacetylase (CDA) is an enzyme that catalyzes the hydrolysis of acetamine groups of N -acetyl- d -glucosamine in chitin, converting it to chitosan in fungal cell walls. In the present study, the activity in batch culture of CDA from six Mucoralean strains, two of them wild type, isolated...
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