Journal
CRITICAL REVIEWS IN FOOD SCIENCE AND NUTRITION
Volume 62, Issue 27, Pages 7659-7676Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/10408398.2021.1922354
Keywords
Edible oleogel; multicomponent oleogelators; novel nutraceutical vehicle; food applications; unsaturated fat
Categories
Funding
- Ocean University of China [862001013134]
- National Key R&D Program of China [2018YFC0311201]
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Oleogels, as a novel food additive, have attracted increasing attention for their easy fabrication, nutritional richness, and safety, playing an important role in substituting solid fats in food. The selection of suitable oleogelators and their concentrations, as well as the synergistic effects between multiple oleogelators, are crucial factors affecting the properties of oleogels.
In order to improve the nutritional and quality characteristics of food, solid fats are widely used in food formulations. With the continuous improvement of consumers' awareness of health in recent years, substantial attempts have been carried out to find substitutes for solid fats to reduce saturated fatty acid content in foods. Oleogels have drawn increasing attention due to their attractive advantages such as easy fabrication, superior fatty acid composition and safe use in food products to satisfy consumers' demands for healthy products. This review provides the latest information on the diversified oleogel systems. The feasibility of oleogel and oleogel-based system as nutraceutical vehicles is elucidated. The type as well as concentration of oleogelators and the synergistic effect between two or more oleogelators are important factors affecting the properties of obtained oleogel. Oleogels used in nutraceutical delivery have been shown to offer increased loading amount, enhanced bioaccessibility and targeted or controlled release. These nutrients wrapped in oleogels may in turn affect the formation and properties of oleogels. Furthermore, the future perspectives of oleogels are discussed. The feasible research trends of food-grade oleogel include oleogel-based solid lipid particle, essential oil-in-oleogel system, delivery of probiotics, nutraceuticals co-delivery and microencapsulated oleogel.
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