Characterization, stability, digestion and absorption of a nobiletin nanoemulsion using DHA-enriched phosphatidylcholine as an emulsifier in vivo and in vitro

Food Chem. 2022 Dec 15;397:133787. doi: 10.1016/j.foodchem.2022.133787. Epub 2022 Jul 29.

ABSTRACT

The emulsification ability of phospholipids might be associated with fatty acid composition. However, there is no research regarding the emulsification ability of marine-derived phospholipids rich in docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA). The present study developed a nanoemulsion delivery system using DHA-enriched phosphatidylcholine as an emulsifier to deliver the poorly soluble ingredient nobiletin. The prepared nobiletin-loaded nanoemulsion was stable, with a small particle size of approximately 200 nm, a polydispersity index of 0.082, and a neutral zeta potential. The nobiletin-loaded nanoemulsion exhibited high lipolysis ability in in vitro experiments. Moreover, the nobiletin-encapsulated nanoemulsion was digested quickly and entered the serum faster than the oil suspension. There was a high distribution of nobiletin in organs such as the liver, brain, kidney, and spleen in the emulsion group after oral administration for 2 h. The findings provided a nanoemulsion delivery system to increase the bioavailability of nobiletin in vitro and in vivo.

PMID:35908471 | DOI:10.1016/j.foodchem.2022.133787