| Registro completo |
| Provedor de dados: |
Electron. J. Biotechnol.
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| País: |
Chile
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| Título: |
Modification of the activity of an alpha-amylase from Bacillus licheniformis by several surfactants
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| Autores: |
Bravo Rodríguez,Vicente
Jurado Alameda,Encarnación
Martínez Gallegos,Juan Francisco
Reyes Requena,Antonia
García López,Ana Isabel
Sampaio Cabral,Joaquim Manuel
Fernandes,Pedro
Pina da Fonseca,Luis Joaquim
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| Data: |
2006-10-01
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| Ano: |
2006
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| Palavras-chave: |
Alpha-amylase
Alkyl polyglycosides
Enzymatic activity
Fatty alcohol ethoxylates
Linear alkyl benzene sulfonate
Nonyl phenol ethoxylate
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| Resumo: |
The influence of different commercial surfactants on the enzymatic activity of a commercial alpha-amylase from Bacillus licheniformis (Termamyl 300 L) has been studied. As non-ionic surfactants, alkyl polyglycosides (Glucopon® 215, Glucopon® 600 and Glucopon® 650) were studied, as were fatty alcohol ethoxylates (Findet 1214N/23 and Findet 10/15), and nonyl phenol ethoxylate (Findet 9Q/21.5NF). Also, an anionic surfactant, linear alkyl benzene sulfonate (LAS) was assayed. In general, none of the non-ionic surfactants studied, except Findet 10/15, vary substantially the enzymatic activity. Findet 10/15 has the strongest hydrophobic character and reduces the enzymatic activity more significantly the greater its concentration. Regarding LAS, this surfactant significantly depressed enzymatic activity, presumably due to the electrostatic interactions caused by its anionic character.
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| Tipo: |
Journal article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582006000500012
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| Editor: |
Pontificia Universidad Católica de Valparaíso
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| Formato: |
text/html
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| Fonte: |
Electronic Journal of Biotechnology v.9 n.5 2006
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