Entrapment of a volatile lipophilic aroma compound (D-limonene) in spray dried water-washed oil bodies naturally derived from sun?ower seeds (Helianthus annus)

Oil bodies are natural emulsions that can be extracted from oil seeds and have previously been shown to be stableafter spray drying. The aim of the study was to evaluate for the first time if spray dried water-washed oil bodiesare an effective carrier for volatile lipophilic actives (theflavour compound D-limonene was used as an examplearoma compound). Water-washed oil bodies were blended with maltodextrin and D-limonene and spray driedusing a Buchi B-191 laboratory spray dryer. Lipid and D-limonene retention was 89–93% and 24–27%. Sampleswere compared to processed emulsions containing sunflower oil and D-limonene and stabilised by either lecithinor Capsul. Lecithin and Capsul processed emulsions had a lipid and D-limonene retention of 82–89%, 7.7–9.1% and48–50%, 55–59% respectively indicating that water-washed oil bodies could retain the most lipids and Capsulcould retain the most D-limonene. This indicates that whilst additional emulsifiers may be required for futureapplications of water-washed oil bodies as carriers of lipophilic actives, oil bodies are excellent agents for lipidencapsulation