In-vitro digestion of flaxseed oil encapsulated in phenolic compound adducted flaxseed protein isolate-flaxseed gum complex coacervates

Journal article


Pham, Loc B., Wang, Bo, Zisu, Bogdan, Truong, Tuyen and Adhikari, Benu. (2021). In-vitro digestion of flaxseed oil encapsulated in phenolic compound adducted flaxseed protein isolate-flaxseed gum complex coacervates. Food Hydrocolloids. 112, p. 106325. https://doi.org/10.1016/j.foodhyd.2020.106325
AuthorsPham, Loc B., Wang, Bo, Zisu, Bogdan, Truong, Tuyen and Adhikari, Benu
Abstract

Two phenolic compounds, flaxseed polyphenol (FPP) and hydroxytyrosol (HT), were covalently adducted with flaxseed protein isolate (FPI) and then complex coacervated with flaxseed gum (FG). Flaxseed oil (FO) was microencapsulated using these complex coacervates as wall materials. The release of FO from these microcapsules and its digestion were studied using an in vitro digestion model. Most of the encapsulated oil (66–80%) was released in the intestinal stage, and 5–17% was released in the gastric stage. The proteolytic degradation of FPI from microcapsule shell and release of FO in the intestinal phase was slowed down by adduction to FPP but not to HT. The release of FO was highest (80%) in (FPI-HT)/FG/FO microcapsule, and 38.5% of released oil was lipolysed into free fatty acids. (FPI-FPP)/FG/FO microcapsules released the lowest amount of oil (66.3%) of which 28.9% was lipolysed. These findings suggest that the phenolic compound-adducted FPI/FG complex coacervates can be promising encapsulating shell materials that can remain intact in the gastric phase and deliver the encapsulant to intestinal phase.

Keywordsflaxseed oil; flaxseed polyphenols; hydroxytyrosol; complex coacervate; microencapsualtion; in-vitro digestion
Year2021
JournalFood Hydrocolloids
Journal citation112, p. 106325
PublisherElsevier B.V.
ISSN0268-005X
Digital Object Identifier (DOI)https://doi.org/10.1016/j.foodhyd.2020.106325
Scopus EID2-s2.0-85090851429
Research or scholarlyResearch
Page range1-12
Publisher's version
License
All rights reserved
File Access Level
Controlled
Output statusPublished
Publication dates
Online11 Sep 2020
Publication process dates
Accepted09 Sep 2020
Deposited28 Jun 2021
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https://acuresearchbank.acu.edu.au/item/8w480/in-vitro-digestion-of-flaxseed-oil-encapsulated-in-phenolic-compound-adducted-flaxseed-protein-isolate-flaxseed-gum-complex-coacervates

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