2.4.2. Preparation of boiled potato Cleaned whole sweet potatoes (3-4 in number) were put in a saucepan containing about 500 ml of boiled water (sufficient to immerse the potatoes) containing 1.5% fresh-squeezed lemon juice (to prevent oxidation), and boiled until the potatoes were almost edible. Water was drained off and the potatoes were kept at room temperature. The weight of the potatoes was recorded to calculate nutrient content under raw and bailed conditions. The boiled pota toes were then peeled to remove the skin, and cut into large chunks (5-7.5 cm) using a knife