期刊
JOURNAL OF FOOD ENGINEERING
卷 285, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jfoodeng.2020.110100
关键词
Glycerol monooleate; Spray-drying; Encapsulation; Dispersibility; Sodium caseinate
资金
- University of Otago
Glycerol monooleate (GMO) improves creaming stability in protein-stabilised emulsions but is unsuitable for direct aqueous applications due to its low solubility in water. Encapsulation could transform waxy solid GMO into a water-dispersible powder. This study assessed spray-drying to produce instantised GMO powders, and investigated emulsion formulation (GMO concentration (33.6%, 47.0%); dextrose equivalent (DE) values of maltodextrin (DE 10, 18)) on emulsion and powder properties. Results showed that all homogenised emulsions were suitable for spray-drying due to their high emulsion stability, monomodal droplet size distributions (150-180 nm) and low viscosity (20-65 mPa s). All instantised powders exhibited good dispersibility (65-90%) in water. The instantised powder with low GMO levels showed high encapsulation efficiencies (93-94%) with low surface oils (3%) and uniform droplet size distributions when reconstituted. Results demonstrated that spraydrying can successfully produce instantised powders for food applications to improve product quality.
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