METHOD OF ANALYSING REDUCING SUBSTANCES Russian patent published in 2012 - IPC G01N33/02 G01N21/78 

FIELD: chemistry.

SUBSTANCE: method involves oxidation of reducing substances with copper (II) compounds in an alkaline medium while heating on a boiling water bath for 10 minutes, bringing the volume of the cooled solution to a defined value, determining optical density at wavelength 670 nm, making an adjustment to partial oxidation of non-reducing carbohydrates, which is subtracted from the optical density reading, and estimating concentration of reducing substances from a calibration curve.

EFFECT: high accuracy and reproducibility of analysis.

5 ex, 6 tbl, 4 dwg