Journal
CRITICAL REVIEWS IN FOOD SCIENCE AND NUTRITION
Volume 63, Issue 15, Pages 2521-2543Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/10408398.2021.1977236
Keywords
Biological functions; cinnamaldehyde; delivery systems; food application
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Cinnamaldehyde, an essential oil extracted from cinnamon plants, has various biological functions. However, its poor solubility in water and sensitivity to oxygen, light, and high temperature limit its direct application. Researchers are using encapsulation techniques to enhance its potential and different delivery systems have been developed. The performance of each system is influenced by factors such as particle size, composition, and properties.
Cinnamaldehyde is an essential oil extracted from the leaves, bark, roots and flowers of cinnamon plants (genus Cinnamomum). Cinnamaldehyde has shown biological functions such as antioxidants, antimicrobials, anti-diabetic, anti-obesity and anti-cancer. However, poor solubility in water as well as molecular sensitivity to oxygen, light, and high temperature limit the direct application of cinnamaldehyde. Researchers are using different encapsulation techniques to maximize the potential biological functions of cinnamaldehyde. Different delivery systems such as liposomes, emulsions, biopolymer nanoparticles, complex coacervation, molecular inclusion, and spray drying have been developed for this purpose. The particle size and morphology, composition and physicochemical properties influence the performance of each delivery system. Consequently, the individual delivery system has its advantages and limitations for specific applications. Given the essential role of cinnamaldehyde in functional food and food preservation, appropriate approaches should be applied in the encapsulation and application of encapsulated cinnamaldehyde. This review systematically analyzes available encapsulation techniques for cinnamaldehyde in terms of their design, properties, advantages and limitations, and food application status. The information provided in this manuscript will assist in the development and widespread use of cinnamaldehyde-loaded particles in the food and beverage industries.
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