Electric Characteristics of Hybrid Polymer Membranes Composed of Two Lipid Species

Koji Oohira, Kiyoshi Toko, Hideyuki Akiyama, Hiroshi Yoshihara, Kaoru Yamafuji

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31 Citations (Scopus)


Electric characteristics of hybrid polymer membranes composed of two lipid species were studied, where one lipid species is positively charged in aqueous solution and the other is negatively charged. As a result, it was found that the hybrid membranes responded to taste substances in different ways according to the molar mixing ratio of these two kinds of lipids, and also showed different response characteristics from those of the single-lipid membranes. The membranes with the mixing ratio around 50% exhibited the largest responses to HCl (sourness) and monosodium glutamate (umami). Moreover, good quantitative agreements with the observed data on the response electric potential were obtained using a theory describing both the changes in surface electric potential and surface charge density with taste substances.

Original languageEnglish
Pages (from-to)3554-3561
Number of pages8
Journaljournal of the physical society of japan
Issue number9
Publication statusPublished - Sept 1995

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


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