Premium
Effects of starch type and concentration on the physicochemical properties of bilayer‐stabilized oil‐in‐water emulsion gels enriched with β ‐1,3/1, 6‐D ‐glucans
Author(s) -
Bortnowska Grażyna,
Bartkowiak Artur,
Tokarczyk Grzegorz,
Przybylska Sylwia,
Iwański Robert
Publication year - 2020
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.10548
Subject(s) - chemistry , emulsion , starch , food science , gum arabic , bilayer , rapeseed , chromatography , chemical engineering , membrane , biochemistry , engineering
Abstract BACKGROUND In recent years, consumer interest in low‐fat foodstuffs having a clean label and potential benefits over physiological functions has shown a growing trend. β ‐1,3/1,6‐ d ‐Glucans (BGs) from Saccharomyces cerevisiae have been recognized as excellent immune‐modulating compounds. Bilayer‐stabilized oil‐in‐water emulsion gels (BEGs) containing oil droplets covered by myofibrillar proteins–gum arabic membranes were used for entrapping BGs in the inner phase. This study investigated the effects of starch type (waxy maize starch, WMS; potato starch, PS) and concentration (0.0–50 g kg −1 ) on the physicochemical properties of BEGs composed of: 200 g kg −1 rapeseed oil, 40 g kg −1 myofibrillar proteins, 14 g kg −1 gum arabic, 15 g kg −1 BGs, 1 g kg −1 citric acid. RESULTS The results showed that BGs were successfully incorporated into the inner phase of BEGs and stability testing showed no separated oil and sediment layer. BEGs were characterized by droplet diameter of d 3,2 = 3.62 ± 0.209 μm and electrical charge of the outer membrane of −27.4 ± 0.257 mV. Increasing starch concentration significantly ( P < 0.05) affected values of the studied rheological parameters, but to a greater extent in relation to PS than WMS. Sensory analysis showed that BEGs were most desirable at WMS and PS concentrations of 40–50 and 30–40 g kg −1 , respectively. CONCLUSIONS BEGs containing oil droplets covered by myofibrillar proteins–gum arabic membranes can be used as carriers for insoluble β ‐glucans and manufactured with a wide range of rheological properties and sensory features desired by consumers. © 2020 Society of Chemical Industry