特別講演会のお知らせ 2017.6.21
北海道支部 支部長 竹澤 聡
この度下記の通り特別講演会が開催されます。
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記
日 時 : 2018年 6月 20日(火) 15:30~16:30
場 所 : 北海道大学工学部 A5-66室 (札幌市北区北13条西8丁目)
日時と場所 平成30年6月20日(水)15:30~16:30
セミナー室
3-B (A5-66) 工学部A棟5階
講 師 Prof. Peter FISCHER, Institute of
Food Nutrition and Health, ETH Zürich,
Switzerland
講演題目 Interfacial rheology and
reflectivity measurements: Protein adsorption layer, capsule formation, foam and
emulsion stability, and biofilms
講演内容 :
The mechanical and structural properties
of mobile fluid-fluid interfaces have a significant effect on the properties of
multiphase soft matter systems. Interfacial rheology is introduced as a tool to
study the deformation behavior of adsorption layers of proteins, small
molecular weight surfactants, and particles. In particular, techniques and
devices to apply shear and dilatational deformation to air-water and oil-water
interfaces will be discussed. To capture the link between interfacial
morphology and the resulting rheological properties of the adsorption layer
also neutron reflectivity is briefly introduced. In a second part, the
interfacial rheologicial response function of plant protein-polysaccharide
complexes and food proteins. For the latter case, we suggest that protein
stabilized emulsion drops can be considered as mechanical stable capsules with
complex layer structure and deformation behavior. Using this knowledge, it
becomes possible to tailor emulsions towards controlled digestion in the human
body, thereby enhancing satiety and, thus, controlling food intake. As final
example, the formation of biofilms at both air-water and oil-water interfaces
will be discussed as outreach of interfacial rheological methods.
問い合わせ連絡先:北海道大学大学院工学研究院,エネルギー環境システム部門,教授・村井祐一(murai@eng.hokudai.ac.jp)