| 摘要 |
PURPOSE: To increase the information related to taste while enhancing reproducibility of data by preparing a dilute solution of organic solvent as a cleaning liquid and cleaning the membrane for taste sensor using the cleaning liquid. CONSTITUTION: A dilute solution of organic solvent is employed as a liquid for cleaning the membrane of a taste sensor employing a molecular membrane of amphiphilic substance or bitterness substance. The organic solvent is effective for substantially all sensor membranes and hydrophobic substances adsorbed to a hydrophobic part are cleaned off in an adsorptive substance by taking advantage of hydrophobicity of the organic solvent. When sufficient cleaning effect can not be attained, an electrolyte is added to the organic solvent. The electrolyte includes acids, salts, their mixtures and alkalis. Acid is especially effective for a negatively charged lipid membrane, e.g. phospholipid, salt is especially effective for a lipid having positively charged group, e.g. ammonium group, and alkali is especially effective for a lipid having ammonium group. |
