Emulsifiers modulate the extent of gastric lipolysis during the dynamic in vitro digestion of submicron chia oil/water emulsions with limited impact on the final extent of intestinal lipolysis

Consumer demands for healthier foods are constantly on the rise and results in the diversification of sources such as vegetable oils. Chia oil is a relevant source of α-linolenic acid. One of the targeted applications is the inclusion of chia oil in emulsified form in beverages where it is necessary...

Full description

Saved in:
Bibliographic Details
Published in:Food hydrocolloids 2022-03, Vol.124, p.107336, Article 107336
Main Authors: Pizones Ruiz-Henestrosa, Víctor M., Ribourg, Lucie, Kermarrec, Alice, Anton, Marc, Pilosof, Ana, Viau, Michelle, Meynier, Anne
Format: Article
Language:English
Subjects:
Bioaccesibility
Biochemistry
Biochemistry, Molecular Biology
Chia oil
Dynamic digestion
Emulsifier
Food and Nutrition
Life Sciences
Lipolysis
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Consumer demands for healthier foods are constantly on the rise and results in the diversification of sources such as vegetable oils. Chia oil is a relevant source of α-linolenic acid. One of the targeted applications is the inclusion of chia oil in emulsified form in beverages where it is necessary to obtain stable submicron emulsions, acting as carrier of nutrients such as lipids. In the present work, high-pressure homogenization was employed to produce emulsions (10% chia oil) with small oil droplets (300 nm), formulated with different emulsifiers (beta-lactoglobulin (BLG), lecithin and Tween 80). These emulsions were submitted to a dynamic in vitro digestion (DIDGI) to better understand the main mechanisms involved in the process of lipolysis, in order to design systems that may allow the modulation of the digestive action of lipases, thus ensuring the maximum bioaccessibility of the lipids. This device mimics part of the transient biochemical conditions as well as the flow of foods through the different compartments occurring in the real digestion. Significant differences were observed in the lipolysis during the gastric phase. BLGemulsions reached a lipolysis degree of 30%. Lecithin-stabilized emulsions behave similarly to BLG ones during the first 90 min but lipolysis levelled off further ∼20%. Finally, Tween-80-stabilized emulsions remained almost undigested (around 2%). No significant differences were noticed in duodenum and distal small intestine, irrespective of the emulsifier employed. After digestion, the fatty acid bioaccessibility was higher with BLG as emulsifier. [Display omitted] •Chia O/W emulsions (similar droplet size) were produced with BLG, LEC and T80.•Lipolysis and bioaccesibility was evaluated with an in vitro dynamic device (DIDGi).•T80 emulsions exhibited the lowest extent gastric lipolysis.•Bioaccessibility of fatty acids were slighltly higher for BLG emulsion.
ISSN:0268-005X
1873-7137
DOI:10.1016/j.foodhyd.2021.107336