CHEMICAL PROPERTIES OF RICINODENDRON HEUDELOTII (BAIL.) SEED OIL

Abstract

The technological characteristics and the fatty acid composition of Ricinodendron heudelotii (Bail.) seed oil from two different regions of Cameroon were studied. The fatty acid composition was determined by gas chromatography on a capillary column. The oil content varied according to the region (44.9–54.7%). The iodine value (160), saponification value (190) and unsaponifiable matter content (1.6%) were similar for the two types of seeds examined. The oil was composed mainly of linoleic acid (25–30%) and a polyunsaturated fatty acid (PUFA) found to be α‐elaeostearic acid (48–56%). The latter fatty acid is subject to transformation during the esterification processes due to its trienic conjugated bonds. The triacylglycerol profile obtained by reversed phase liquid chromatography showed 20 triacylglycerols with two major ones identified as linoleodi‐α‐elaeostearic (29.7–33.1%) and tri‐α‐elaeostearic (13.1–15.9%).

Chemical Composition of Oil From Tetracarpidium Conophorum ((Müll. Arg.) Hutch. And Dalz.) Nuts

“…Solvent was degassed before used. TG were separated and peaks identified according to the method described by Kapseu and Tchiegang (1995).…”

“…These characteristics are the same for oils from C. edulis (Tchiegang ef al. 1998) and R. heudelotii (Kapseu and Tchiegang 1995), and cassava seed (Ajiwe et al 1994). The iodine values were similar for the two types of T. conophorum and higher than those of R. heudelotii and cassava seeds.…”

“…Among the commonly eaten nonconventional oilseeds in Cameroon are Cucumeropsis edulis (Kapseu et al 1993), Coda edulis (Tchiegang et al 1998), Ricinodendron heudelotii (Kapseu and Tchiegang 1995) and Tetracarpidium conophorum. T. conophorum belongs to the Euphorbiacae family.…”

Optimisation de l’extraction de l’huile par pressage des amandes de Ricinodendron heudelotii Pierre ex Pax

“…La teneur élevée en huile fait de ces amandes une matière première potentielle pour la petite huilerie africaine (Tchiégang et al, 1997). LÕhuile des amandes de cette plante contient lÕacide gras a élaéosté-arique (C 18:3 conjugué) présent à plus de 50% des acides gras totaux (Kapseu & Tchiégang, 1995;Tchié-gang et al, 1997). Dans le cadre de la recherche des huiles à caractère diététique, des travaux initiés par Moundipa et al (1998) ont montré que cette huile favorise la synthèse du cholestérol HDL chez le rat de laboratoire.…”

Production, analyse et applications des huiles végétales en Afrique

“…Depuis plus de 25 ans, notre équipe de recherche a analysé une vingtaine d'oléagineux africains [25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44]. Une présentation synthétique des résultats est illustrée par les tableaux 7 et 8 pour les acides gras et les triglycérides respectivement.…”