%0 Journal Article
%T Structure and Orientation Changes of ω-and γ-Gliadins at the Air-Water Interface : A PM-IRRAS Spectroscopy and Brewster Angle Microscopy Study
%+ Centre de recherches Paul Pascal (CRPP)
%+ Laboratoire des colloïdes, verres et nanomatériaux (LCVN)
%+ Chimie et Biologie des Membranes et des Nanoobjets (CBMN)
%+ Unité de recherche sur les Biopolymères, Interactions Assemblages (BIA)
%+ Université Sciences et Technologies - Bordeaux 1 (UB)
%A Banc, Amélie
%A Desbat, B.
%A Renard, Denis
%A Popineau, Yves
%A Mangavel, Cécile
%A Navailles, Laurence
%< avec comité de lecture
%Z P 107-10999
%@ 0743-7463
%J Langmuir
%I American Chemical Society
%V 23
%N 26
%P 13066-13075
%8 2007-11-22
%D 2007
%R 10.1021/la702037k
%K Isotherm
%K Compression
%K Models
%K Stacking
%K Stability
%K Interfacial area
%K Film
%K Infrared spectrometry
%K Infrared reflection
%K Infrared absorption
%K Polarization
%K Air water interface
%K Orientation
%K Molecular structure
%K Monolayer
%K Gas liquid interface
%Z Chemical Sciences/Theoretical and/or physical chemistry
%Z Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft]Journal articles
%X Microscopic and molecular structures of ω- and γ-gliadin monolayers at the air-water interface were studied under compression by three complementary techniques: compression isotherms, polarization modulation infrared reflection absorption spectroscopy (PM-IRRAS), and Brewster angle microscopy (BAM). For high molecular areas, gliadin films are homogeneous, and a flat orientation of secondary structures relative to the interface is observed. With increasing compression, the nature and orientation of secondary structures changed to minimize the interfacial area. The γ-gliadin film is the most stable at the air-water interface; its interfacial volume is constant with increasing compression, contrary to ω-gliadin films whose molecules are forced out of the interface. γ-Gliadin stability at a high level of compression is interpreted by a stacking model.
%G English
%Z GDR Assemblage de Molécules Végétales
%2 https://hal.science/hal-00550429/document
%2 https://hal.science/hal-00550429/file/Langmuir2.pdf
%L hal-00550429
%U https://hal.science/hal-00550429
%~ CNRS
%~ UNIV-MONTP2
%~ INRA
%~ LCVN
%~ CRPP
%~ AGREENIUM
%~ UNIV-MONTPELLIER
%~ INRAE
%~ UM1-UM2
%~ TEST2-HALCNRS