A food-grade self-nanoemulsifying delivery system for enhancing oral bioavailability of ellagic acid

•A food-grade ellagic acid (EA) loaded self-nanoemulsifying system is proposed.•The system significantly enhances the dissolution of EA.•The system highly improves the oral bioavailability of EA in vivo.•EA with the system shows better bioavailability than that in pomegranate extract. Ellagic acid i...

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Bibliographic Details
Published inJournal of functional foods Vol. 34; pp. 207 - 215
Main Authors Wang, Shang-Ta, Chou, Chien-Te, Su, Nan-Wei
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.07.2017
Elsevier
Subjects
Bioavailability
Ellagic acid
Pomegranate
Self-nanoemulsifying delivery system
DE
MRM
EA-SNEDS
TPGS
AUC
Ellagic acid (PubChem CID: 5281855)
Ellagic acid
CMC
ESI
GI tract
Pomegranate
Cmax
Self-nanoemulsifying delivery system
SDS
Bioavailability
SNEDS
PEG
EPA
Tmax
PEO
DHA
PTA
LCT
TEM
MCT
HLB
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Summary:•A food-grade ellagic acid (EA) loaded self-nanoemulsifying system is proposed.•The system significantly enhances the dissolution of EA.•The system highly improves the oral bioavailability of EA in vivo.•EA with the system shows better bioavailability than that in pomegranate extract. Ellagic acid is known of a predominant bioactive component in pomegranate that possesses broad health benefits, but it has low bioavailability. In this work, we developed a food-grade self-nanoemulsifying system to improve the dissolution and absorption of ellagic acid. Solubility assay and pseudo-ternary phase diagrams revealed suitable components for the formulation. The optimal formulation was composed of polyethylene glycol, polysorbate, caprylic/capric triacylglycerol at the ratio of 45/45/10wt.%. With this optimal formulation and gentle stirring, a fine nanoemulsion was achieved and had mean droplet size of around 120nm. The dissolution of ellagic acid was significantly elevated with the formulation. Rat pharmacokinetics studies showed that ellagic acid was 6.6- and 3.2-fold more bioavailable with the formulation than with aqueous suspensions and pomegranate extract, respectively. The proposed self-nanoemulsifying system to deliver ellagic acid can be a novel strategy for developing products for dietary supplements and functional foods of ellagic acid.
ISSN:1756-4646
2214-9414
DOI:10.1016/j.jff.2017.04.033