Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados BJM (2) Autor Haq,Ikram-ul (2) Aftab,Muhammad Nauman (1) Ali,Sikander (1) Baig,Shahjahan (1) Palavra-chave Aspergillus oryzae (1) B. licheniformis (1) Bacitracin (1) L-DOPA (1) Mutagenesis (1) Optimization (1) Thermodynamic parameters (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2012 (1) 2006 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Systematic mutagenesis method for enhanced production of bacitracin by Bacillus licheniformis mutant strain UV-MN-HN-6 BJM Aftab,Muhammad Nauman; Haq,Ikram-ul; Baig,Shahjahan. The purpose of the current study was intended to obtain the enhanced production of bacitracin by Bacillus licheniformis through random mutagenesis and optimization of various parameters. Several isolates of Bacillus licheniformis were isolated from local habitat and isolate designated as GP-35 produced maximum bacitracin production (14±0.72 IU ml-1). Bacitracin production of Bacillus licheniformis GP-35 was increased to 23±0.69 IU ml-1 after treatment with ultraviolet (UV) radiations. Similarly, treatment of vegetative cells of GP-35 with chemicals like N-methyl N'-nitro N-nitroso guanidine (MNNG) and Nitrous acid (HNO2) increased the bacitracin production to a level of 31±1.35 IU ml-1 and 27±0.89 IU ml-1 respectively. Treatment of isolate GP-35 with... Tipo: Info:eu-repo/semantics/article Palavras-chave: Mutagenesis; Bacitracin; B. licheniformis; Optimization. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000100009 Mutation of Aspergillus oryzae for improved production of 3, 4-dihydroxy phenyl-L-alanine (L-DOPA) from L-tyrosine BJM Haq,Ikram-ul; Ali,Sikander. Aspergillus oryzae mutant strain UV-7 was further improved for the production of L-DOPA from L-tyrosine using chemical mutation. Different putative mutant strains of organism were tested for the production of L-DOPA in submerged fermentation. Among these putative mutant strains, mutant designated SI-12 gave maximum production of L-DOPA (300 mg L-DOPA.g-1 cells). The production of L-DOPA from different carbon source solutions (So= 30 g.l-1) by mutant culture was investigated at different nitrogen sources, initial pH and temperature values. At optimum pH (pHo= 5.0), and temperature (t=30ºC), 100% sugars were utilized for production and cell mass formation, corresponding to final L-DOPA product yield of 150 mg.g-1 substrate utilized, and maximum volumetric... Tipo: Info:eu-repo/semantics/article Palavras-chave: Aspergillus oryzae; L-DOPA; Thermodynamic parameters. Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822006000100015 Registros recuperados: 2 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco