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dc.creatorBravo Rodríguez,Vicente
dc.creatorJurado Alameda,Encarnación
dc.creatorMartínez Gallegos,Juan Francisco
dc.creatorReyes Requena,Antonia
dc.creatorGarcía López,Ana Isabel
dc.creatorSampaio Cabral,Joaquim Manuel
dc.creatorFernandes,Pedro
dc.creatorPina da Fonseca,Luis Joaquim
dc.date2006-10-01
dc.date.accessioned2019-05-03T12:44:22Z
dc.date.available2019-05-03T12:44:22Z
dc.identifierhttps://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0717-34582006000500012
dc.identifier.urihttp://revistaschilenas.uchile.cl/handle/2250/84917
dc.descriptionThe 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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dc.languageen
dc.publisherPontificia Universidad Católica de Valparaíso
dc.relation10.4067/S0717-34582006000500012
dc.rightsinfo:eu-repo/semantics/openAccess
dc.sourceElectronic Journal of Biotechnology v.9 n.5 2006
dc.subjectalpha-amylase
dc.subjectalkyl polyglycosides
dc.subjectenzymatic activity
dc.subjectfatty alcohol ethoxylates
dc.subjectlinear alkyl benzene sulfonate
dc.subjectnonyl phenol ethoxylate
dc.titleModification of the activity of an alpha-amylase from Bacillus licheniformis by several surfactants


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