Stability-Preserved Lycopene in a Low-Oxygen Lipid Matrix: Oxidative-Stress Biomarkers and Human Nutritional Relevance

A low-oxygen lycopene lipid complex was characterized for extraction transfer, isomeric integrity, oil-phase quality, and accelerated stability. The three optimized formulations transferred 78.2-82.1% of lycopene from the processed peel material, contained 2.13-2.34% total lycopene, and retained 85.1-86.2% in the all-trans form. After 30 days at 45°C under nitrogen and light protection, total lycopene retention remained 90.8-91.6%; ABTS capacity retained 89.8-90.8% of baseline. Human lycopene studies show endpoint-specific redox responses rather than a uniform antioxidant effect. Purified lycopene has altered DNA-oxidation measures and superoxide dismutase activity in randomized trials, while tomato-food interventions have changed resistance of lipoproteins or lymphocytes to experimental oxidation. The formulation data define a chemically stable starting material for human studies in which circulating lycopene, isomer distribution, and a small prespecified redox-biomarker panel are measured together.