醸造用水質判定バイオセンサーシステムの開発

概要

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A flow-type biosensor able to detect minerals in water was constructed on a trial basis using immobilized yeast cells and a semiconductor ethanol sensor. This biosensor detected minerals within 20-30 min and remained relatively stable for about one month. The sensor output, expressed as delta volts (ΔV), which is the difference between the amount of ethanol formed with deionized water and that formed with the test water, was correlated with the total hardness of the waters tested. Many kinds of water, such as well waters from sake factories, and various spring and well waters marketed in the Hiroshima district for their palatable qualities, were analyzed using the biosensor. The outputs showed that the ethanol fermentation abilities of waters from sake factories (0.18-0.35ΔV) were higher than those of bottled waters (0.02-0.2ΔV). It is thought that the sensor might be suitable for the rapid and convenient detection of potential ethanol production ability in water.
社団法人日本生物工学会の論文
1998-02-25