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	Provedor de dados BJM (2) Autor Martins,Meire Lelis Leal (2) Nascimento,Wellingta Cristina Almeida do (2) Palavra-chave Bacillus sp. (2) Protease (2) Thermophilic bacterium (2) Detergents (1) Tipo do documento Info:eu-repo/semantics/article (2) Ano 2006 (1) 2004 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Studies on the stability of protease from Bacillus sp. and its compatibility with commercial detergent BJM Nascimento,Wellingta Cristina Almeida do; Martins,Meire Lelis Leal. Enzymes, and particularly proteases, have become an important and indispensable part of industrial processes such as laundry detergents, pharmaceuticals and food products. Detergents such as Tide®, Ariel® and Biz® contain proteolytic enzymes, most of them produced by members of the genus Bacillus. This paper describes the compatibility of protease produced by the thermophilic Bacillus sp, with commercial laundry detergent. Stability studies indicated that this enzyme retained about 95% and 74% of its maximum activity after 1h at 60ºC in the presence of glycine in combination with MnSO4 and CaCl2, respectively. No inhibitory effect was observed at 1.0-5.0 mM of EDTA. Triton X-100 inhibited the enzyme in all the concentrations tested. The enzyme was unstable... Tipo: Info:eu-repo/semantics/article Palavras-chave: Protease; Thermophilic bacterium; Bacillus sp.; Detergents. Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822006000300020 Production and properties of an extracellular protease from thermophilic Bacillus sp BJM Nascimento,Wellingta Cristina Almeida do; Martins,Meire Lelis Leal. Protease production by thermophilic Bacillus sp strain SMIA-2 cultivated in liquid cultures containing trisodium citrate reached a maximum in 9h, with levels of 1.93U/mg protein. The microorganism utilized several carbon sources for the production of protease. Starch was the best substrate, followed by trisodium citrate, citric acid and sucrose. Among the various organic and inorganic nitrogen sources, ammonium nitrate was found to be the best. Studies on the protease characterization revealed that the optimum temperature of this enzyme was 60ºC. The enzyme was stable for 2h at 30ºC, while at 40ºC and 80ºC, 14% and 84% of the original activities were lost, respectively. The optimum pH of the enzyme was found to be 8.0. After incubation of crude enzyme... Tipo: Info:eu-repo/semantics/article Palavras-chave: Protease; Thermophilic bacterium; Bacillus sp.. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822004000100015 Registros recuperados: 2 Primeira ... 1 ... Última

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