The amino acid and mineral content of baobab (Adansonia digitata L.) leaves
Yazzie, D. | Vanderjagt, D.J. | Pastuszyn, A. | Okolo, A. | Glew, R.H.
The leaves of the baobab tree (Adansonia digitata L.) are a staple of populations in many parts of Africa, especially the central region of the continent. Among the people who comprise the Hausa ethnic group in particular, it serves as the main ingredient of a soup called "miyar kuka." However, the literature contains few studies of the nutritional quality of baobab leaf. In the present report, we show that baobab leaf contains 10.6% (dry weight) protein and an amino acid composition which compares favorably to that of an "ideal" protein: valine (5.9%), phenylalanine + tyrosine (9.6%), isoleucine (6.3%), lysine (5.7%), arginine (8.5%), threonine (3.9%), cysteine + methionine (4.8%), tryptophan (1.5%). In terms of mineral content, baobab leaf is an excellent source of calcium, iron, potassium, magnesium, manganese, molybdenum, phosphorus, and zinc. These data indicate that in terms of both quality and quantity, baobab leaf can serve as a significant protein and mineral source for those populations for whom it is a staple food.
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