Journal
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
Volume 63, Issue 29, Pages 6588-6595Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jafc.5b01625
Keywords
Osage orange; seed oil; epoxidation; amination; poly(alpha-hydroxydibutylamine) triglyceride
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Milled Osage orange seeds (Maclura pomifera (Raf.) Schneid) were Soxhlet extracted:with hexane, and portions of the extract were treated with activated carbon before solvent removal. The crude oil was winterized and degummed by centrifugation at low temperature. Decantation of the centrifugate gave an admixture of the triglycerides and free fatty acids. The free fatty acid content of the oil was removed when portions of the admixture were diluted with hexane and shaken With cold aqueous ammonium hydroxide (0.1 M) solution. The desiccant dried organic phase was concentrated under reduced pressure to give: the cleaned Osage orange triglyceride after solvent removal by rotary evaporation at 67 degrees C. Epoxidation of the-resulting, cleaned triglyceride was effected by reaction with in situ generated peroxy performic acid in H2O2. The oxirane rings' of the derivatized oil were then opened using N,N-dibutylamine catalyzed by anhydrous ZnCl2 to afford the poly(alpha-hydtotydibutylamine) triglyceride. The purpose of this work was to derivatize and thereby stabilize this highly unsaturated tree oil for its eventual use in lubrication applications:
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