University of North Florida
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Stuart Chalk, Ph.D.
Department of Chemistry
University of North Florida
Phone: 1-904-620-1938
Fax: 1-904-620-3535
Email: schalk@unf.edu
Website: @unf

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Food

Classification: Food -> jelly

Citations 1

"Biamperometric Titration And Flow Injection Determination Of Cyclamate In Low-calorie Products"
Analyst 1995 Volume 120, Issue 9 Pages 2407-2412
Orlando Fatibello-Filho, Milton Duffles Capelato and Silvana Aparecida Calafatti

Abstract: Two methods for cyclamate (I) determination are described. In the titrimetric method, a portion (5 ml) of the sample in 1 M H3PO4 was titrated with 0.1 M NaNO2, with biamperometric detection at two Pt electrodes polarized at +0.7 V vs. Ag/AgCl. In the flow injection (FI) method, a portion (0.25 ml) of the sample in 1 M H3PO4 was injected into a carrier stream (2.96 ml/min) of 1 M H3PO4 containing 0.001% Triton X-100. The sample/carrier stream was merged with a reagent stream (0.77 ml/min) of 0.1 M NaNO2. The mixture was passed through a 50 cm coiled reactor before biamperometric detection of two Pt electrodes polarized at +0.7 V vs. Ag/AgCl. For the titrimetric method, the calibration graph was linear from 10 to 60 mM I, the detection limit was 1.3 mM and the RSD (n = 9) was 1%. Recoveries of I were 97.6-102.5%. For the FI method, the calibration graph was linear from 5 to 40 mM I, the detection limit was 2.5 mM and the RSD (n = 10) was 1.2%. Recoveries of I were 97.8-102.4%. The throughput was 90 samples/h. The methods were applied to various low-calorie products, viz., sweeteners, puddings, jellies and soft drinks.
Cyclamate Biamperometry Electrode Surfactant Triton X Titrations