Nutraceuticals are an emerging food category defined as food or parts of food that provide medical or health benefits, including the prevention and treatment of disease. The potential disease prevention and health promotion of many nutraceuticals are not fully realized because they are susceptible to the changes in the external environment and the gastrointestinal tract environment. Consequently, the great potential of nanoscale delivery systems in the nutraceutical industry is being rapidly established, especially in the encapsulation, protection, and delivery of nutraceuticals. This article first introduces the challenges of incorporating nutraceuticals into foods. Then, various nanoscale delivery systems (nanoemulsions, nanoliposomes, polymer nanoparticles, solid lipid nanoparticles, nanostructured lipid carriers, and nanosuspension) including their advantages and disadvantages, preparation, characterization, and application are described. Finally, the safety and future trends of nanoscale delivery are discussed.

营养食品是一种新兴的食品类别，定义为具有医学或健康益处（包括疾病的预防和治疗）的食品或部分食品。由于许多营养品易受外部环境和胃肠道环境变化的影响，因此尚未完全实现潜在的疾病预防和健康促进。因此，纳米级递送系统在保健食品工业中的巨大潜力正在迅速建立，特别是在保健食品的封装，保护和递送方面。本文首先介绍了将营养保健品纳入食品的挑战。然后，各种纳米级递送系统（纳米乳液，纳米脂质体，聚合物纳米颗粒，固体脂质纳米颗粒，纳米结构脂质载体，和纳米悬浮液），包括其优缺点，制备，表征和应用。最后，讨论了纳米级递送的安全性和未来趋势。