Flow-Injection Spectrophotometric Determination of Cysteine in Biologically Active Dietary Supplements

A. V. Petrova; R. Ishimatsu; K. Nakano; T. Imato; A. B. Vishnikin; L. N. Moskvin; A. V. Bulatov

doi:10.1134/S1061934816020118

Flow-Injection Spectrophotometric Determination of Cysteine in Biologically Active Dietary Supplements

A. V. Petrova, R. Ishimatsu, K. Nakano, T. Imato, A. B. Vishnikin, L. N. Moskvin, A. V. Bulatov

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14 Citations (Scopus)

Abstract

A procedure is developed for the flow-injection spectrophotometric determination of cysteine in dietary supplements based on the formation of a reduced phosphomolybdic complex by the analyte in mixing a sample solution with a solution of ammonium 18-molybdophosphate. For the flow-injection determination of cysteine, a polymethyl methacrylate chip is fabricated, in the channels of which the analytical form was obtained and detected. The detection limit for cysteine is 3 × 10^–6 M and the throughput is 240 determinations per hour. The procedure was tested in the analysis of different samples of dietary supplements; the results obtained were verified by HPLC.

Original language	English
Pages (from-to)	172-178
Number of pages	7
Journal	Journal of Analytical Chemistry
Volume	71
Issue number	2
DOIs	https://doi.org/10.1134/S1061934816020118
Publication status	Published - Feb 1 2016

All Science Journal Classification (ASJC) codes

Analytical Chemistry

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10.1134/S1061934816020118

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title = "Flow-Injection Spectrophotometric Determination of Cysteine in Biologically Active Dietary Supplements",

abstract = "A procedure is developed for the flow-injection spectrophotometric determination of cysteine in dietary supplements based on the formation of a reduced phosphomolybdic complex by the analyte in mixing a sample solution with a solution of ammonium 18-molybdophosphate. For the flow-injection determination of cysteine, a polymethyl methacrylate chip is fabricated, in the channels of which the analytical form was obtained and detected. The detection limit for cysteine is 3 × 10–6 M and the throughput is 240 determinations per hour. The procedure was tested in the analysis of different samples of dietary supplements; the results obtained were verified by HPLC.",

author = "Petrova, {A. V.} and R. Ishimatsu and K. Nakano and T. Imato and Vishnikin, {A. B.} and Moskvin, {L. N.} and Bulatov, {A. V.}",

note = "Funding Information: This work was supported by the Russian Foundation for Basic Research, projects 13-03-00031-a and 12-03-33132 mol_a_ved) and Resource Center “Methods of Analysis of the Composition of Substances” of St. Petersburg State University. Publisher Copyright: {\textcopyright} 2016, Pleiades Publishing, Ltd.",

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AU - Petrova, A. V.

AU - Ishimatsu, R.

AU - Nakano, K.

AU - Imato, T.

AU - Vishnikin, A. B.

AU - Moskvin, L. N.

AU - Bulatov, A. V.

N1 - Funding Information: This work was supported by the Russian Foundation for Basic Research, projects 13-03-00031-a and 12-03-33132 mol_a_ved) and Resource Center “Methods of Analysis of the Composition of Substances” of St. Petersburg State University. Publisher Copyright: © 2016, Pleiades Publishing, Ltd.

PY - 2016/2/1

Y1 - 2016/2/1

N2 - A procedure is developed for the flow-injection spectrophotometric determination of cysteine in dietary supplements based on the formation of a reduced phosphomolybdic complex by the analyte in mixing a sample solution with a solution of ammonium 18-molybdophosphate. For the flow-injection determination of cysteine, a polymethyl methacrylate chip is fabricated, in the channels of which the analytical form was obtained and detected. The detection limit for cysteine is 3 × 10–6 M and the throughput is 240 determinations per hour. The procedure was tested in the analysis of different samples of dietary supplements; the results obtained were verified by HPLC.

AB - A procedure is developed for the flow-injection spectrophotometric determination of cysteine in dietary supplements based on the formation of a reduced phosphomolybdic complex by the analyte in mixing a sample solution with a solution of ammonium 18-molybdophosphate. For the flow-injection determination of cysteine, a polymethyl methacrylate chip is fabricated, in the channels of which the analytical form was obtained and detected. The detection limit for cysteine is 3 × 10–6 M and the throughput is 240 determinations per hour. The procedure was tested in the analysis of different samples of dietary supplements; the results obtained were verified by HPLC.

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JO - Journal of Analytical Chemistry

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Flow-Injection Spectrophotometric Determination of Cysteine in Biologically Active Dietary Supplements

Abstract

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