Oil-in-water Pickering emulsions via microfluidization with cellulose nanocrystals: 2. In vitro lipid digestion

Loading...
Thumbnail Image
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2019-11-01
Major/Subject
Mcode
Degree programme
Language
en
Pages
8
709-716
Series
FOOD HYDROCOLLOIDS, Volume 96
Abstract
Bio-based engineered nanomaterials are being explored for their utilization within foods to improve quality and enhance functionality. In this study, we investigated the impact of a naturally-derived particle stabilizer, cellulose nanocrystals (CNC), on the gastrointestinal fate and digestion of corn oil-in-water Pickering emulsions. A static 3-stage gastrointestinal tract (GIT) model was used to simulate the mouth, stomach and small intestine. The digestion of the CNC-coated lipid droplets was monitored by measuring the release of free fatty acids (FFAs) in the small intestine stage over time. The final extent of FFAs released was reduced by ∼40% by using emulsions containing 10 wt% of the dispersed phase, corn oil, stabilized with CNC (0.75 wt% of the aqueous phase). Three main mechanisms are proposed for this effect: (1) the irreversible adsorption of CNC to the lipid droplet surfaces inhibited bile salt and lipase adsorption; (2) coalescence and flocculation of the lipid droplets reduced the surface area available for the bile salts and lipase to bind; and (3) accumulation of FFAs at the surfaces of the lipid droplets inhibited lipolysis. Our findings suggest that CNC can be used as a food-grade particle stabilizer to modulate the digestion of Pickering emulsified lipids, which is useful for the development of given functional foods.
Description
| openaire: EC/H2020/788489/EU//BioELCell
Keywords
Cellulose nanocrystals, Lipid digestion, Microfluidization, Pickering emulsion, Simulated GIT model
Other note
Citation
Bai, L, Lv, S, Xiang, W, Huan, S, McClements, D J & Rojas, O J 2019, ' Oil-in-water Pickering emulsions via microfluidization with cellulose nanocrystals : 2. In vitro lipid digestion ', Food Hydrocolloids, vol. 96, pp. 709-716 . https://doi.org/10.1016/j.foodhyd.2019.04.039