Repozytorium publikacji - Politechnika Gdańska

A potentiometric taste sensor with All Solid State Electrodes containing five all solid state electrodes with appropriate lipophilic compounds (benzyldimethyltetradecylammonium chloride, dodecyltrimethylammonium bromide, palmitic acid, stearic acid, and phytol) embedded in a polymer membrane was applied for discrimination of mineral water samples differed in CO2 content. Samples of still, slightly sparkling, and sparkling Naleczowianka mineral water were examined. The investigation of CO2 content in the sparkling Naleczowianka mineral water in time lapse after opening the bottle was also performed. It was shown by Principal Component Analysis and Agglomerative Hierarchical Clustering that the taste sensor could discriminate between samples of similar CO2 content. Distances between principal component points representing samples of tested water as a function of time after opening the bottle created a power curve. These distances could be a measure of CO2 content in tested water samples. The shape of the obtained power curve was in agreement with sensory perception of major CO2 release during openings of the bottle of carbonated water

Autorzy

• dr inż. Ewa Marjańska link otwiera się w nowej karcie ,
• prof. dr hab. inż. Maria Szpakowska link otwiera się w nowej karcie