Voltammetric Determination of Cholesterol in Food
Abstract
We report on a cholesterol electrochemical behavior on chemically modified carbon-containing electrode. All the experiments are carried out on a voltammetric workstation. The dependence of the cholesterol electrooxidation signal on pH, electrochemical concentration (potential and time) and scan rate is demonstrated. Working conditions (pH = 6.86, v = 40 mV/sec) of cholesterol determination in model media are specified. The linear dependence ofcholesterol electrooxidation current at a potential of +1.06 V on the cholesterol concentration is observed up to 50 pmol/dm3. The detection limit is 0.07 pmol/dm3. Results of comparative determination of cholesterol in food using voltammetric and spectrophotometric procedures are presented.
About the Authors
K. V. Derina
Национальный исследовательский Томский политехнический университет
Russian Federation
Russian Federation
E. I. Korotkova
Национальный исследовательский Томский политехнический университет
Russian Federation
Russian Federation
E. V. Dorozhko
Национальный исследовательский Томский политехнический университет
Russian Federation
Russian Federation
O. A. Voronova
Национальный исследовательский Томский политехнический университет
Russian Federation
Russian Federation
I. V. Chulkova
Национальный исследовательский Томский политехнический университет
Russian Federation
Russian Federation
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Review
For citations:
Derina K.V., Korotkova E.I., Dorozhko E.V., Voronova O.A., Chulkova I.V. Voltammetric Determination of Cholesterol in Food. Industrial laboratory. Diagnostics of materials. 2016;82(11):11-16. (In Russ.)
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