Electrochemical nonenzymatic sensor for cholesterol determination in food

Ksenia Derina, Elena Korotkova, Yekaterina Taishibekova, Lyazat Salkeeva, Bohumil Kratochvil, Jiri Barek

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The treatment of some inborn metabolism errors requires cholesterol substitution therapy. Cholesterol plays a vital role in the human body. Therefore, the majority of cholesterol determination techniques are targeted to blood and blood serum. Nevertheless, cholesterol determination in food is important as well. In this paper, cholesterol determination using differential pulse voltammetry (DPV) in dairy products (e.g., milk, clotted cream, yogurt, butter, etc.) is reported with a novel nonenzymatic sensor based on diphosphonic acid of 1,4-diacetylglycoluril (DPADGU) as an electrode surface modifier. Stable anodic response was obtained from cholesterol on the modified carbon-based electrode. The sensor has high stability, sensitivity (20 μA mol L−1 cm−2), and a wide linear range from 1 up to 200 μM. The LOD and LOQ values are 1.5 and 5.1 μM, respectively. The developed methods were successfully applied to the above mentioned dairy products. [Figure not available: see fulltext.]

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalAnalytical and Bioanalytical Chemistry
DOIs
Publication statusAccepted/In press - 16 Jun 2018

Keywords

  • Cholesterol
  • Dairy products
  • Sensor
  • Smith-Lemli-Opitz syndrome
  • Voltammetry

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry

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