Sterculia foetida

Among these were a cyclopropane fatty acid from Sterculia foetida (Sterculiaceae) seed oil (0.1%) and cyanolipids from Koelreuteri a... 

Bao XM, Katz S, Pollard M, Ohlrogge J. Carbocyclic fatty acids in plants biochemical and molecular genetic characterization of cyclopropane fatty acid synthesis of Sterculia foetida. Proc. Natl. Acad. Sci. U.S.A. 2002 99 7171-7177. 

Cyclopropene Sterculic acid 19 1 Sterculia foetida Lubricants, polymers -... 

Bao X, Thelen JJ, Bonaventure G, Ohlrogge JB. (2003) Characterization of cyclopropane fatty-acid synthase from Sterculia foetida. J Biol Chem 278 12846-12853. 

Cyclopropenoid fatty acids (Fig. 2.17) inhibit fatty acid desaturation in several species, including chicken, rat, pig, cow, and trout, causing a rise in the stearate to oleate ratio. This may have an effect on the composition and function of membranes as variation in lipid composition is known to alter permeability of membrane systems. Numerous types of deleterious effects from consumption of seed oils with cyclopropenoid fatty acids have been observed (Seigler, 1979). A cyclopropene fatty acid from Sterculia foetida oil was lethal to the larvae of Callosobruchus maculatus at 0.1% in artificial diets (Janzen et al., 1977). The most important edible oil with these compounds is cottonseed oil from Gos-sypium hirsutum (Malvaceae). Much of the cyclopropenoid... 

Analysis of cyclopropene acid-containing triacylglycerols is not possible by GC because they are polymerized at high temperatures. One approach, applied to the seed oils of munguba (Bombax munguba Mart Schuch, Ahmad and Mukherjee, 1986) and Sterculia foetida (Pasher and Ahmad,... 

Pasha, M. K. and Ahmad, F. (1992) Analysis of triacylglycerols containing cyclopropene fatty acids in Sterculia foetida (Linn.) seed lipids. J. Agric. Food Chem., 40, 626-9. 

Double bonds are accommodated by rings of all sizes. The smallest cycloalkene, cyclo-propene, was first synthesized in 1922. A cyclopropene ring is present in sterculic acid, a substance derived from the oil present in the seeds of a tree Sterculia foetida) that grows in the Philippines and Indonesia. 

Methyl sterculate and methyl malvalate were prepared from trans-esterified Sterculia foetida oil by a combination of urea clathration and reverse phase HPLC [8]. The methyl esters were added to cultures of Ustilago maydis (DC) Cda. and Fusarium oxysporum Schlecht in small quantities of methanol. Control cultures received methanol alone. 

Isol. from the bark of Sterculia foetida. Used as a 0.1% soln. in 75% EtOH for photometric detn. of Ta. Pale yellow needles (EtOH). Sol. EtOH. Mp 193°. 

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