Sterols of Tetraselmis (Prasinophyceae)
1993
Patterson, G.W. | Tsitsa-Tzardis, E. | Wikfors, G.H. | Gladu, P.K. | Chitwood, D.J. | Harrison, D.
1. Sterols were identified from 11 isolates of Tetraselmis, a unicellular Prasinophyte alga used frequently as food in mariculture. 2. The principal sterol in eight isolates was either 24-methylenecholesterol or 24-methylcholesterol; the latter was determined to be campesterol in all cases. 3. Campesterol is the first 24 alpha sterol to be reported in the Prasinophyceae. 4. In the remaining three isolates, cholesterol was the principal sterol with smaller amounts of 24-methylenecholesterol and campesterol present; in two of these strains total sterol approached 3% of dry weight. 5. This is the first report of cholesterol as the principal sterol of a Prasinophyte; the C28 sterols found in Tetraselmis are the dominant sterols in most Prasinophyceae studied to date.
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