Sewage sludge was evaluated as high available and low cost microbial oils feedstock for biodiesel production. Samples from four different wastewater treatment plants from La Araucanía Region in Southern Chile presented total lipids content ranging between 7.7 and 12.6%, being Vilcún sewage sludge that with the highest transesterifiable lipids content of about 50% of the total extracted lipids. ...

A chitosanase produced constitutively by Bacillus sp. MET 1299 was purified by SP-Sephadex column chromatography. The molecular weight was estimated to be 52 kDa by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). Optimal enzyme activity was observed at a pH of 5.5 and temperature of 60 degrees C. The purified chitosanase showed high activity on 90% deacetylated colloidal c...

In this study we examined marine bacteria associated with different corals (Porites lutea, Galaxea fascicularis, Acropora sp. and Pavona sp.) collected from vicinity of Panjang island, Jepara, North Java Sea, Indonesia for their antimicrobial activities against the bacteria Echerichia coli, Bacillus subtilis, Staphylococcus lentus and the yeast Candida glabrata. A total of 13 bacterial isolates...

Textile effluent is one of the known sources of pollution, which usually contain several chemicals, which contaminate the receiving water. This study was conducted to understand the ability of Bacillus sp., and Pseudomonas sp., on decolourization and normalization of other physicochemical parameters, such as odour, temperature, pH, total solids, total dissolved solids, total suspended solids, t...

Xylanase production of newly isolated thermophilic alkali-tolerant Bacillus sp. strain SP and strain BC was investigated in batch and continuous cultures. Enzyme synthesis was inducible with both strains and was observed only in xylan-containing media. Xylan from oat spelt is a better inducer than xylan from birch for strain Bacillus sp. BC while such difference was not observed for strain SP. ...

The present study assessed the effect of seed inoculation with single or multiple plant growth-promoting rhizobacterial (PGPR) strains on yield in spring wheat (Triticum aestivum spp. vulgare var. Kırık) and barley (Hordeum vulgare cv. Tokak) plants in both greenhouse and field conditions during the years 2007 and 2008. The treatments of wheat and barley plants during the first year include...

Telah dilakukan penelitian yang bertujuan mengetahui sifat mikrobiologis yaitu laju inaktivasi bakteri E coli dan Bacillus, sp. ; organoleptik susu segar dipasteurisasi non termal menggunakan metode Ultraviolet (UV) ozon. Metode ini rancangan factorial acak lengkap dengan dua faktor, lama penyinaran 3 , 6 9 menit dikombinasi paparan ozon 1,3 5 menit. Sedangkan analisa regresi liner. Hasilnya me...

thermophilic bacillus sp. gus1, isolated from  a soil  sample obtained from citrus garden, produced at least three proteases as detected by sodium dodecyl sulfate polyacrylamide gel electrophoresis (sds-page) and zymogram analysis. the enzymes were stable in the alkaline ph range (8.0-12.0), with the optimum temperature and ph range of the proteases being 70ºc and 6.0-12.0, respectively. all th...

BACKGROUND Alginate is a linear polysaccharide consisting of guluronate (polyG) and mannuronate (polyM) subunits. METHODS In the initial screening of alginate-degrading bacteria from soil, 10 isolates were able to grow on minimal medium containing alginate. The optimization of cell growth and alginate lyase (algL) production was carried out by the addition of 0.8% alginate and 0.2-0.3 M NaCl ...