Abstract
AbstractD‐Tagatose is a rare natural sugar, which is promising alternative for popular dietary sweeteners. To optimize and make D‐tagatose production more cost‐effective, a portable (bio)sensor would be beneficial for D‐tagatose quantification in bioreactor media during D‐tagatose (bio)synthesis. In this study, a pilot study of D‐tagatose quantification by a bioamperometric system is reported. A key feature of the system is usage of fructose dehydrogenase from Gluconobacter japonicus, widely known as a highly fructose‐specific enzyme, and 2‐arylamino‐1,4‐benzoquinone derivatives, as electron transfer mediators from the enzyme to carbon electrodes. The system has been validated as biosensor for D‐tagatose quantification in the fermentation medium.
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