2.1. Fruit source and processing Keitt' and 'Palmer' mangos (Mangifera indica r L.) were commercially harvested near Homestead Florida at the ripe com (color break stage shoulders developed and/or shoulder bloom) and shipped, without steam or hot-water quarantine treatment, the same week to the Southern Regio nal Research Center lab. Fruit were processed upon receipt at the firm-ripe (FR) stage (Table 1) then at the soft-ripe (SR) stage 4 days later after 4 h exposure to 550 ul 1-1 static ethylene and subsequent ripening at room temperature Fruit were washed in cold running tap water followed by submersion into 100 ul 1- sodium hypochlorite (pH 6.5-7) at 4 °C for 3-5 min Afterwards, fruit were completely peeled with sharp paring knifes, 2-3 mm into the subepider mal tissue to remove all visible veins and eliminate potential browning (Limbanyen et al., 1998). Stem scar ends were completely removed and peeled fruit submerged for up to 5 min, in fresh again chlorinated 4 °C water. Fruit were cut in a filet-like