Interaction of algal polysaccharide with lipid Langmuir monolayers

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dc.contributor.author Brito, Audrey Kalinouski de [UNIFESP]
dc.contributor.author Caseli, Luciano [UNIFESP]
dc.contributor.author Nordi, Cristina S. F. [UNIFESP]
dc.date.accessioned 2016-01-24T14:17:31Z
dc.date.available 2016-01-24T14:17:31Z
dc.date.issued 2011-12-01
dc.identifier http://dx.doi.org/10.1016/j.msec.2011.09.002
dc.identifier.citation Materials Science & Engineering C-materials for Biological Applications. Amsterdam: Elsevier B.V., v. 31, n. 8, p. 1857-1860, 2011.
dc.identifier.issn 0928-4931
dc.identifier.uri http://repositorio.unifesp.br/handle/11600/34297
dc.description.abstract Algal polysaccharides may assist in the incorporation of metal ions from water and also have applications in health, interacting with biomembranes. in this paper, we have exploited the interactions at the molecular level of an extract of extracellular algal polysaccharide (EPS) with biomembrane models (lipid Langmuir monolayers). From surface pressure-area isotherms and Polarization Modulation Infrared ReflectionAbsorption Spectroscopy (PM-IRRAS), we have inferred that EPS interacts with both kinds of lipids: a negatively charged and a positively charged, however with different mechanisms of action. EPS, being negatively charged, interacts with the polar heads of the positively charged lipid monolayer, while for a negatively charged lipid forming the Langmuir film, EPS penetrates into the alkyl chains of lipid in a mechanism driven mainly by hydrophobic interactions. the insights obtained in this paper are relevant because these help to understand the action of EPS in biomembranes and enable future applications of EPS-lipid hybrid Langmuir-Blodgett films for heavy metal ion sensors. (C) 2011 Elsevier B.V. All rights reserved. en
dc.format.extent 1857-1860
dc.language.iso eng
dc.publisher Elsevier B.V.
dc.relation.ispartof Materials Science & Engineering C-materials for Biological Applications
dc.rights Acesso restrito
dc.subject Langmuir monolayer en
dc.subject Algal polysaccharide en
dc.subject Air-water interface en
dc.subject Metal ion sensor en
dc.subject Lipid en
dc.title Interaction of algal polysaccharide with lipid Langmuir monolayers en
dc.type Artigo
dc.rights.license http://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.contributor.institution Universidade Federal de São Paulo (UNIFESP)
dc.description.affiliation Universidade Federal de São Paulo, Inst Ciencias Ambientais Quim & Farmaceut, Diadema, SP, Brazil
dc.description.affiliationUnifesp Universidade Federal de São Paulo, Inst Ciencias Ambientais Quim & Farmaceut, Diadema, SP, Brazil
dc.identifier.doi 10.1016/j.msec.2011.09.002
dc.description.source Web of Science
dc.identifier.wos WOS:000297400800036



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