Strategies for improving loading of emulsion-based functional oil powder

Functional oil is type of oil that is beneficial to human health and has nutritional value, however, functional oils are rich in bioactive substances such as polyunsaturated fatty acids which are sensitive to environmental factors and are susceptible to oxidation or decomposition. Construction of emulsion-based oil powder is a promising approach for improving the stability and solubility of functional oils. However, the low effective loading of oil in powder is the main challenge limiting encapsulation technology. This manuscript focuses on reviewing the current research progress of emulsion-based functional oil powder construction and systematically summarizes the processing characteristics of emulsion-based oil powder with high payload and summarizing the strategies to enhance the payload of powder in term of emulsification and drying, respectively. The impact of emulsion formation on oil powder production is discussed from different characteristics of emulsions, including emulsion composition, emulsification methods and emulsion types. In addition, the current status of improving material loading performance by various modifications to the drying technology is discussed, including the addition of drying processing additives, changes in drying parameters and the effect of innovative technological means.

Automated summary

Functional oil is a beneficial and nutritionally valuable oil, but its bioactive substances, such as polyunsaturated fatty acids, are sensitive to environmental factors and prone to oxidation or decomposition. Emulsion-based oil powder construction is a promising method for improving the stability and solubility of functional oils. However, the low effective loading of oil in powder is currently a major challenge. This manuscript reviews the research progress of emulsion-based functional oil powder construction, summarizes the processing characteristics of high payload emulsion-based oil powder, and discusses strategies for enhancing powder payload through emulsification and drying.