Thermal decomposition of the food colours amaranth, sunset yellow FCF and tartrazine in the presence of sucrose and glucose
- 1 October 1986
- journal article
- research article
- Published by Taylor & Francis in Food Additives & Contaminants
- Vol. 3 (4) , 295-303
- https://doi.org/10.1080/02652038609373596
Abstract
Mixtures of food colour, sucrose and glucose were heated at several temperatures under simulated candy making conditions. Amaranth (128 μg/g), sunset yellow FCF (113 μg/g) and tartrazine (116 μg/g) were found to decompose by up to 25%, 10% and 22% respectively over a temperature range of 120–162°C. The decomposition increased with increasing temperature. The products found as a result of amaranth decomposition corresponded to naphthionic acid and amino‐R‐salt. No increase in intermediates was observed in the candies as a result of the decomposition of sunset yellow FCF and tartrazine during the cooking process. Analytical methodology included sample cleanup with reversed‐phase cartridges (ion‐exchange cartridges for sulphanilic acid) followed by liquid chromatography with ultraviolet absorbance detection. Average recoveries of all compounds studied were 94–100%. A survey of commercial candies for food colour intermediates indicated that no significant increase in their levels above the regulatory limits was found.This publication has 5 references indexed in Scilit:
- Separation and detection of synthetic food colors by ion-pair high- performance liquid chromatographyJournal of Chromatography A, 1981
- Thermal Stability of Subsidiary Dyes in Amaranth (FD&C Red No. 2)Canadian Institute of Food Science and Technology Journal, 1978
- THERMAL STABILITY OF SUBSIDIARY DYES ASSOCIATED WITH FD&C YELLOW NO. 6Journal of Food Science, 1978
- Reduction of the azo food dyes FD and C Red 2 (Amaranth) and FD and C Red 40 by thermally degraded D-fructose and D-glucoseJournal of Agricultural and Food Chemistry, 1975
- Base-catalyzed sucrose degradation studiesJournal of Agricultural and Food Chemistry, 1969