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Macadamia integrifolia Maiden & Betche (Proteaceae) is one of the major tree crops of the world. In addition to its nutritional value, macadamia also contains a number of phytochemicals that are responsible for a variety of bioactivities, among which hypocholesterolic activity which has been frequently studied. No previous studies were done on the Macadamia cultivated in Egypt, this encouraged the authors to perform the present study aiming to throw light on the nutritional profile of title plant. Proximate analysis of the leaves, pericarp and kernel Macadamia integrifolia Maiden & Betche includes the determination of moisture content, total ash, total protein, total fats, total carbohydrates and crude fibers, study of vitamin E content by using HPLC, determination of the mineral content according to Association of Official Analytical Chemists(A.A.O.C). Macadamia showed a total fat (5.085%) in leaves, (67.96%) in kernel and (0.34%) in pericarp. The protein constitute (6.65 %) in leaves, (20.81%) in kernel and (6.91%) in pericarp. Carbohydrate constitutes (72.35%) in leaves, (5.8%) in kernel and (77.58%) in pericarp. Moisture content ranged from (11.72%) in leaves, (2.83%) in kernel and (9,65%) in pericarp. Ash content was (4.2%) in leaves, (2.6%) in kernel and (5.52%) in pericarp. The content of vitamin E in macadamia tested parts was (133.18 mg/100gm) in leaves, (61.49 mg/100gm) in kernel and (98.78 mg/100gm) in pericarp. The mineral contents of macadamia tested parts were resulted Calcium (851.51 mg/100gm) in leaves, (181.64 mg/100gm) in kernel and (177.16 mg/100gm) in pericarp, Potassium (838.16 mg/100g) in leaves, (3458.14 mg/100gm) in kernel and (7803.68 mg/100gm) in pericarp, Sodium constitutes (309.36 mg/100g) in leaves, (69.67 mg/100gm) in kernel and (156.58 mg/100gm) in pericarp, Iron was (9.72 mg/100g) in leaves, (9.48 mg/100gm) in kernel and (9.75 mg/100gm) in pericarp and Copper resulted (0.76 mg/100g) in leaves, (0.634 mg/100gm) in kernel and (0.668 mg/100gm) in pericarp. Keywodrs: Proteaceae, nutritional, Macadamia integrifolia, Pericarp.

Study of Nutritional Contents of Macadamia integrifolia Maiden and Betche Leaves, Kernel and Pericarp Cultivated in Egypt