Abstract

Tuber oligospermum and Terfezia arenaria are two most important truffle species among all the edible mushrooms in Morocco. They are a popular food and they have a high economic value. Their sugars and lipids content were evaluated by the usual chromatographic and spectrometric techniques. Their sugar contents are estimated to 26.2 and 24.7% respectively. The various monomers constituting the polysaccharides were, in all two simples, glucose, which remained the major sugar, mannose and rhamnose. Uronic acids and glucosamine were also detected. The lipids accounts are 5.1 and 4.4% at Tuber oligospermum and Terfezia arenaria respectively. The rate of free fatty acids is constant at 26 to 27% in both species studied, while the rates of phospholipids (PL) and glycolipids (GL) are reversed: 38.4 and 35.4 in the same order in T. oligospermum and 34.5 and 38.1 in T. arenaria. Finally, the acid linoleic (C18: 2) is a majority of fatty acids in both species with 54% for Tuber oligospermum and 51% for T. arenaria.