期刊
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
卷 33, 期 2, 页码 155-160出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jfca.2013.12.008
关键词
Pyridoxine; Vitamins; Screen-printed electrodes; Carbon nanotubes; Voltammetry; Food analysis; Supplements; Energy drinks; Food composition; Analytical methods; Rapid food analytical methods
资金
- COFIN (Programmi di Ricerca Scientifica di Rilevante Interesse Nazionale, MIUR [2008MWHCP2_003]
A simple and rapid voltammetric method based on the use of disposable screen-printed electrodes is proposed for the determination of vitamin B-6. The influence of the pH on the voltammetric response was analyzed. Estimation of the linear range (2.0 x 10(-6)/7.2 x 10(-5) M), calibration function, limit of detection (1.5 x 10(-6) M) and reproducibility was performed along with the determination of possible interferences from species present in real samples. The proposed analytical system was successfully applied for the determination of pyridoxine in multivitamin supplements, energy drinks and breakfast cereals by using the standard addition method. (C) 2014 Elsevier Inc. All rights reserved.
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