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日本機械学会北海道支部
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北海道支部 支部長 竹澤 聡
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先日開催のご案内を致しました北海道大学における特別講演会の内容に
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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） |
