These kernels are high in fat content with a calorie count close to butter. Pecan kernels are nutritious and a good source of energy and vitamins. Defatted kernel powder is useful as a dietary supplement as it contains all the essential amino acids and significant amounts of minerals and natural antioxidants like phenolic acids and tocopherols. The oil is used in cooking and salads and has good keeping qualities. Pecan kernels are a good source of energy and provide about 2891 kJ 100 g−1.