Rapid sun drying yielded leucaena leaf meal with carotene and xanthophyll concentrations of 446 and 865 mg/kg, respectively, but considerable losses occurred during drying at 60 and 145°C, and as a result of blanching in hot water or ferrous sulphate solution. Loss rates of carotenes during storage were in the range 19–40 mg/kg per month, and of xanthophylls, 29–53 mg/kg per month.