Tijdschrift , Nature, 190, 915 - 916 (03 June 1961), Identification of Sugars in the Manna of Northern Iraq
ZAKARIA I. SABRY & NICOLA A. ATALLAH
Department of Food Technology, American University of Beirut.
MANNA is found in the Middle East in the Sinai peninsula and in Northern Iraq. Bodenheimer and Theodor1 claimed that the manna they found on the leaves of Tamarix in Sinai is the excretion of the scale insects Trabutina mannipara and Najacoccus serpentinus. However, it is generally believed in northern Iraq (Allos, H. F., private communication) that manna is an exudate of Fraxinus ornus L. (West, W. A., private communication), probably from insect-produced wounds. The exudate usually accumulates on the leaves until they fall to the ground. The sugars are extracted from the raw material with boiling water and mixed with eggs to make a popular dessert. While sucrose and invert sugar have been identified in manna collected from Sinai2, the Iraqi manna was shown to contain sucrose and melezitose3 as well as trehalose4.
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