News Column

Researchers at Kyushu University Release New Data on Sensor Research

June 17, 2014

By a News Reporter-Staff News Editor at Journal of Technology -- A new study on Sensor Research is now available. According to news reporting from Fukuoka, Japan, by VerticalNews journalists, research stated, "Taste evaluation technology has been developed by several methods, such as sensory tests, electronic tongues and a taste sensor based on lipid/polymer membranes. In particular, the taste sensor can individually quantify five basic tastes without multivariate analysis."

The news correspondents obtained a quote from the research from Kyushu University, "However, it has proven difficult to develop a sweetness sensor, because sweeteners are classified into three types according to the electric charges in an aqueous solution; that is, no charge, negative charge and positive charge. Using membrane potential measurements, the taste-sensing system needs three types of sensor membrane for each electric charge type of sweetener. Since the commercially available sweetness sensor was only intended for uncharged sweeteners, a sweetness sensor for positively charged high-potency sweeteners such as aspartame was developed in this study. Using a lipid and plasticizers, we fabricated various lipid/polymer membranes for the sweetness sensor to identify the suitable components of the sensor membranes. As a result, one of the developed sensors showed responses of more than 20 mV to 10 mM aspartame and less than 5 mV to any other taste. The responses of the sensor depended on the concentration of aspartame."

According to the news reporters, the research concluded: "These results suggested that the developed sweetness sensor had high sensitivity to and high selectivity for aspartame."

For more information on this research see: Development of a sweetness sensor for aspartame, a positively charged high-potency sweetener. Sensors, 2014;14(4):7359-73. (Elsevier -; Sensors -

Our news journalists report that additional information may be obtained by contacting M. Yasuura, Graduate School of Information Science and Electrical Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan. Additional authors for this research include Y. Tahara, H. Ikezaki and K. Toko.

Keywords for this news article include: Asia, Japan, Fukuoka, Sensor Research.

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Source: Journal of Technology

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