Extension of Storage Stability in Energy-Dense Encapsulated Systems by Minimization of Lipid Oxidation
Abstract
Measurement of quality loss through oxidative or Maillard cross - linking of phospholipids or proteins was accomplished using an encapsulated, energy-dense model system simulating a generic calorie-dense ration component. Measurement methods developed were rapid, reliable,and sensitive. They assay cross-linking which occurs as the second or sensible stage of both the degradative processes and correlates with color, odor, and toughness. Using these methods, it was shown that at an a typically high concentration the synthetic antioxidant tertiary-butyl hydroquinone (TBHQ) was the most potent single antioxidant tested in uncompressed dry and moist systems. The higher alkyl gallates, which have a very low acute and chronic toxicity, and rosemary extract HERBALOX are nearly as effective. The activity of these substances in dispersed systems and relative inactivity in dry vegetable oils is consistent with the polar paradox rationale developed by the senior author. This states that, other things being equal, polar antioxidants will be more effective in nonpolar bulk oils and nonpolar antioxidants more effective in dispersed polar lipids like membranes or emulsions. It was shown that compression of these model systems is a powerful antioxygenic measure and that it has a synergistic effect with dodecyl gallate (DG). DG, a lipophile, was more than twice as effective as propyl gallate (PG), a relative hydrophile, in the dried, dairy-based system. Keywords: Autooxidation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1988
- Accession Number
- ADA212841
Entities
People
- Edward D. Black
- Landa Hoke
- William L. Porter
Organizations
- United States Army Soldier Systems Center