Abstract
AbstractAlthough dissolved oxygen plays an important role in chemical and biochemical processes in oral medium, no quantitative result exists concerning its concentration in saliva. Using a micro‐computer operated polarographic device, we could measure the two consecutive waves of O2 reduction in whole human saliva samples. After correction of the charging current contribution, we have found that the oxygen concentration is quite low, most often less than 0.08 p.p.m. In order to explain this unexpected result, a study of oxygen consumption by enzymatic reactions in saliva has been undertaken. We could demonstrate that enzymatic reactions of glucose oxidase and catalase are responsible for the complete consumption of oxygen in whole saliva samples.
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