As a continuation of our study on plants of the Sapindaceae, the chem. compn. of the oil extd. from seeds of Allophylus natalensis and of A. dregeanus has been investigated. The oil from both species contained approx. equal amts. of triglycerides (TAG) and type I cyanolipids (CL), 1-cyano-2-hydroxymethylprop-2-en-1-ol-diesters, with minor amts. of type III CL, 1-cyano-2-hydroxymethylprop-1-en-3-ol-diesters. Structural investigation of the oil components was accomplished by chem., chromatog. (TLC, CC, GC, and GC-MS), and spectroscopic (IR, NMR) means. GC and GC-MS anal. showed that C20 fatty acids were dominant in the CL components of the oil from the two species (44-80% vs. 21-26% in TAG), with cis-11-eicosenoic acid (36-46%) and cis 13-eicosenoic acid (paullinic acid, 23-37%) as the major esterified fatty acyl chains in A. natalensis and A. dregeanus, resp. Cis-vaccenic acid was particularly abundant (11-31%) in the CL from A. dregeanus, whereas eicosanoic acid (10-22%) was also a major component of CL in both species.
Cyanolipid-rich seed oils from Allophylus natalensis and A. dregeanus.
PAPADIA, PARIDE;FANIZZI, Francesco Paolo
2005-01-01
Abstract
As a continuation of our study on plants of the Sapindaceae, the chem. compn. of the oil extd. from seeds of Allophylus natalensis and of A. dregeanus has been investigated. The oil from both species contained approx. equal amts. of triglycerides (TAG) and type I cyanolipids (CL), 1-cyano-2-hydroxymethylprop-2-en-1-ol-diesters, with minor amts. of type III CL, 1-cyano-2-hydroxymethylprop-1-en-3-ol-diesters. Structural investigation of the oil components was accomplished by chem., chromatog. (TLC, CC, GC, and GC-MS), and spectroscopic (IR, NMR) means. GC and GC-MS anal. showed that C20 fatty acids were dominant in the CL components of the oil from the two species (44-80% vs. 21-26% in TAG), with cis-11-eicosenoic acid (36-46%) and cis 13-eicosenoic acid (paullinic acid, 23-37%) as the major esterified fatty acyl chains in A. natalensis and A. dregeanus, resp. Cis-vaccenic acid was particularly abundant (11-31%) in the CL from A. dregeanus, whereas eicosanoic acid (10-22%) was also a major component of CL in both species.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
