Sg. Batrakov et On. Tolkachev, THE STRUCTURES OF TRIACYLGLYCEROLS FROM SCLEROTIA OF THE RYE ERGOT CLAVICEPS-PURPUREA (FRIES) TUL, Chemistry and physics of lipids, 86(1), 1997, pp. 1-12
The triacylglycerol fraction of lipids extracted from sclerotia of the
rye ergot Claviceps purpurea strain VKM F-2642D has been shown to com
prise about 60% of the total lipids and to consist of at least seven c
onstituents, namely, [R]-[R]-[R] (1.6% of the total fraction), [R-Ric]
-[R]-[R] (27%), [R-Ric]-[R-Ric]-[R] (65%), [R-Ric]-[R-Ric]-[R-Ric] (4.
8%), [R-Ric-Ric]-[R-Ric]-[R-Ric] (1.1%), [R-Ric-Ric]-[R-Ric-Ric]-[R-Ri
c] (0.3%), and [R-Ric-Ric-Ric]-[R-Ric-Ric]-[R-Ric-Ric] (0.2%) (acyl re
sidues at the 1(3), 2 and; 3(1) positions of the glycerol moiety are i
ndicated; R = nonhydroxylated fatty acid (C-16,C-18) residue, Ric = ri
cinoleyl residue). Non-hydroxylated fatty acyls (R) are n-16:0 (25-50%
of the total), 16:1 omega 7 (10-15%), n-18:0 (2-5%), 18:1 omega 9 (20
-30%), and 18:2 omega 6,9 (10-35%): The second and the third of the li
sted triacylglycerols are composed dominantly (by 86% or more) of 1,2-
di-[R]-3-[R-Ric]-sn-glycerol and 1-[R]-2,3-di-[R-Ric]-sn-glycerol, res
pectively. (C) 1997 Elsevier Science Ireland Ltd.