Size and Stability of Reconstituted Sesame Oil Bodies

摘要

Oil bodies of seasame seeds comprise a triacylglycerol matrix,which is surrounded by a monolayer of phospholipids embedded with unique proteins,mainly suctural proteins termed oleosins.Artificial oil bodies were successfdully reconstituted with various compositions of triacylglycerols to oil-body proteins.Both thermostabilty and structural stability of reconstituted oil bodies decreased as their sizes increased,and vice versa.Proteinase K digestion indicated that oleosins anchored both native and reconstituted oil bodies via their central hydrophobic domains.The stability of reconstituted oil bodies,as well as the pruifried ones from sesame seeds,could be substantially enhanced after their surface proteins were cross-linked by glutaraldhyde or genipin.