Screening and characterization of a novel alkaline lipase from Acinetobacter calcoaceticus 1-7 isolated from Bohai Bay in China for detergent formulation
Braz. j. microbiol
;
43(1): 148-156, Jan.-Mar. 2012. ilus, tab
Artigo
em Inglês
| LILACS
| ID: lil-622799
ABSTRACT
A novel alkaline lipase-producing strain 1-7 identified as Acinetobacter calcoaceticus was isolated from soil samples collected from Bohai Bay, China, using an olive oil alkaline plate, which contained olive oil as the sole carbon source. The lipase from strain 1-7 showed the maximum activity at pH 9.0 under 40ºC. One interesting feature of this enzyme is that it exhibits lipase activity over a broad range of temperatures and good stability. It is also stable at a broad range of pHs from 4.0 to 10.0 for 24 h. Its catalytic activity was highly enhanced in the presence of Ca2+, Mg2+ and K+, but partially inhibited by Cu2+, Al3+, Fe3+ , Ba2+and Zn2+. The fact that it displays marked stability and activity in the presence of TritonX-100, Tween-20, Tween-80, SDS, Hydrogen peroxide, Sodium perborate, Sodium hypochlorite, Sodium citrate, Sodium taurocholate, Glycerine and NaCl suggests that this lipase is suitable as an additive in detergent formulations.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Carbono
/
Alcalinidade do Solo
/
Acinetobacter calcoaceticus
/
Lipase
Tipo de estudo:
Estudo diagnóstico
/
Estudo de rastreamento
Idioma:
Inglês
Revista:
Braz. j. microbiol
Assunto da revista:
Microbiologia
Ano de publicação:
2012
Tipo de documento:
Artigo
País de afiliação:
China
Instituição/País de afiliação:
Tianjin University of Science and Technology/CN
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