Comparison of the Rates of Vitamin Degradation when Mixed with Metal Sulphates or Metal Amino Acid Chelates
✍ Scribed by Mario Marchetti; H. DeWayne Ashmead; Nadia Tossani; Silvia Marchetti; Stephen D. Ashmead
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 153 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0889-1575
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✦ Synopsis
Mixes containing retinol, cholecalciferol, tocopherol, menadione, thiamin, ribo#avin, pyridoxine, cyanocobalamin, ascorbic acid, nicotinamide, pantothenic acid, folic acid, and biotin were blended with either metal sulphates or metal amino acid chelates of Cu, Zn, Fe, Mn, and Co. Half of the mixes were stored at 373C and the other half at 203C. Vitamin potencies were determined at 0, 90, and 180 days. The percentages of losses of retinol, menadione, pyridoxine, and ascorbic acid were signi"cantly less when these vitamins were stored with metal amino acid chelates compared to storage with metal sulphates at either temperature. There was signi"cant degradation of pyridoxine and ribo#avin at 373C and of ascorbic acid, retinol, and menadione at 203C in the presence of the metal sulphates, but not in the presence of the amino acid chelates. It was concluded that in stored foods containing vitamins and minerals, there would be signi"cantly less degradation of the vitamins prone to oxidation if the sources of the added minerals were amino acid chelates.