Now showing items 1-10 of 111
Response surface optimization of D(-)-lactic acid production by Lactobacillus SMI8 using corn steep liquor and yeast autolysate as an alternative nitrogen source
(African Journal of Biotechnology, 2009-11-02) [Artigo]
The production of D(-) lactic acid from Lactobacillus LMI8 sp. was studied, using 2 low-cost nitrogen sources: corn steep liquor (CSL) and yeast autolysate (YA). A central composite design was used to determine maximal ...
Biodegradation of biodiesel/diesel blends by Candida viswanathii
(African Journal of Biotechnology, 2009-06-17) [Artigo]
This work is aimed to assess the aerobic biodegradation of biodiesel/diesel blends (0, 2, 5, 20 and 100%, v/v) by Candida viswanathii. The biodegradation potential of the inoculum was assessed with the redox indicator ...
Production and partial characterization of keratinase produced by a microorganism isolated from poultry processing plant wastewater
(African Journal of Biotechnology, 2008-02-05) [Artigo]
A Streptomyces was isolated from poultry plant wastewater, showed high keratinolytic activity when cultured on feather meal medium. Optimum keratinolytic activity was observed at 40°C and pH 8.0. The enzyme also showed to ...
Effects of the biodegradation on biodegradable polymer blends and polypropylene
(AIP Conference Proceedings, 2008-09-26) [Trabalho apresentado em evento]
The large use of plastics in the world generates a large amount of waste which persists around 200 years in the environment. To minimize this effect is important to search some new polymer materials: the blends of biodegradable ...
Xylanolytic complex from Aspergillus giganteus: production and characterization
(Journal of Basic Microbiology, 2003-01-01) [Artigo]
An Aspergillus giganteus strain was isolated as an excellent producer of xylanase associated with low levels of cellulase. Optimal xylanase production was obtained in liquid VOGEL medium containing xylan as carbon source, ...
Temperature effect on dextransucrase production by Leuconostoc mesenteroides FT 045 B isolated from Alcohol and Sugar Mill Plant
(African Journal of Biotechnology, 2005-03-01) [Artigo]
Temperature (23 to 31 degrees C) and sucrose concentration ( 3 and 4%) effects on dextransucrase production by Leuconostoc mesenteroides NRRL B 512 ( F) and Leuconostoc mesenteroides FT 045 B were studied. The conditions ...
Photocatalytic and photoelectrochemical treatment effects on the killing of escherichia coli cells
(Proceedings of the Solar World Congress 2005: Bringing Water to the World, Including Proceedings of 34th ASES Annual Conference and Proceedings of 30th National Passive Solar Conference, 2005-12-01) [Trabalho apresentado em evento]
In this study, we report the efficiency of photocatalytic and photoelectrochemical treatment using titanium dioxide as semiconductor and its applications in water disinfection. It was compared the efficiency of the two ...
Endophytic yeasts and filamentous fungi associated with southern Brazilian apple (Malus domestica) orchards subjected to conventional, integrated or organic cultivation
(Journal of Basic Microbiology, 2005-10-26) [Artigo]
Endophytic fungi were isolated from leaves, flowers and fruit of healthy apple trees (Malus domestica, BORKH.) growing in southern Brazilian orchards under three different cultivation systems (conventional, integrated and ...
Biodegradability of diesel and biodiesel blends
(African Journal of Biotechnology, 2008-05-02) [Artigo]
The biodegradability of pure diesel and biodiesel and blends with different proportions of biodiesel (2% (commercial); 5% and 20%) was evaluated employing the respirometric method and the redox indicator 2,6-dichlorophenol ...
(Re)descobrindo o lixo: a visão de criança do bairro Bonsucesso periferia de Rio Claro-SP
(Congresso de Extensão Universitária, 2007) [Trabalho apresentado em evento]