Co-oxidation of the sulfur-containing amino acids in an autoxidizing lipid system
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Abstract
Oxidation of the sulfur amino acids by autoxidizing lipids was studied in a model system consisting of an amino acid dispersed in cold-pressed, molecularly distilled menhaden oil (20–80% w/w). Under all conditions investigated, cysteine was oxidized completely to cystine. Preliminary results suggest that at 110°C the oxidation follows first-order kinetics for at least the first 8 hr. A specific reaction rate constant of 0.25 per hour was calculated. When fatty acids were added to the system, cystine was oxidized to its thiosulfinate ester. When the fatty acid-cystine ratio was 1:2, oxidation of cystine was a maximum. No oxidation of cystine occurred unless either a fatty acid, volatile organic acid, or ethanol was added. Under the conditions investigated, methionine was not oxidized to either its sulfoxide or its sulfone.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Co-oxidation of the sulfur-containing amino acids in an autoxidizing lipid system |
| Series title | Journal of Food Science |
| DOI | 10.1111/j.1365-2621.1963.tb00239.x |
| Volume | 28 |
| Issue | 5 |
| Year Published | 1963 |
| Language | English |
| Publisher | Wiley |
| Contributing office(s) | Western Fisheries Research Center |
| Description | 4 p. |
| First page | 537 |
| Last page | 540 |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |