Resumen de Cambios relacionados con el «daño por frío» en ácidos grasos de fosfolípidos de la membrana plasmática y antioxidantes naturales de Jicama (Pachyrhizus erosus)
Rafael García, Edmundo Mercado Silva
The objective of this study was to evaluate chilling susceptibility of Jícama (Pachyrhuzus erosus) cultivars, San Miguelito and Vega de San Juan stored at 10°C and 13°C. The plasma membrane from those cultivars were extracted and analyzed for phospholipids, fatty acids and a-Tocopherol. The ascorbic acid, was analyzed at tissue level, a-Tocopherol and ascorbic acid content decreased 71-79% and 46-29% in San Miguelito, and Vega de San Juan cultivars respectively. Phosphatydilcoline (PC) also decreased 32 and 71% in both cultivars. This results indicated that during cold storage, there were loss of membrane and oxidative stress because of incapability of tissue to regenerate a-Tocopherol and ascorbic acid.
