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Different drug delivery systems are prepared on the nanoscale to improve performance in drug formulations, such as nanoparticles or nanoemulsions. Polymeric nanoparticles have been used to encapsulate drugs for several applications because of some characteristics of these carriers to control drug delivery, transport molecules to a specific tissue, protect the drugs, and increase drug bioavailability. When using nanocapsules, an essential parameter for encapsulating different hydrophilic or lipophilic molecules is the characteristics of the core. Babassu oil (BBS) is a natural product from Brazil, composed majoritary of short-chain saturated fatty acids. BBS has an elevated hydrophilic-lipophilic balance (HLB), which may promote interaction of the oil with hydrophilic drugs. In this study, we developed and characterized particles containing babassu oil, solely or combined with sorbitan monostearate (Span® 60) or …