Background

Recently, the production of ‘clean label’ products as a potential strategy to eliminate the generation and utilization of synthetic ingredients (particularly preservatives) requires a lot of attention in different industries, including the food industry. Plant-based compounds, including essential oils (EOs), as well as their main components, have attracted great interest owing to their known characteristics, such as their antimicrobial and antioxidant activity. These lipophilic compounds, however, need to be incorporated into a delivery system to improve their functionality, application and consumer perception. Many different colloidal systems can be used as promising carriers to deliver EOs to food products.

Scope and approach

In this review, the current state-of-the-art in the formulation of colloidal delivery systems for food products to encapsulate EOs is reviewed and their pros and cons in terms of formulation and functionality are given. Ultimately, some real food applications of different formulations are introduced.

Key findings and conclusions

Oil-in-water nanoemulsions and nanoparticles loaded with EOs are the most commonly utilized delivery systems particularly for the food industry. Recent research is more focused on the design of novel carrier systems, including surfactant-based systems, fibers, films, and oleogels. Nevertheless, there is still a lack of research about the physicochemical stability as well as the functionality of delivery systems when they are embedded in a complex matrix of food ingredients. EO-loaded colloidal dispersion has the potential to be efficient partial or complete alternatives for synthetic preservatives depending on the final product, the characteristics of the delivery system, and food regulations.

中文翻译：

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用于精油及其主要成分的食品胶体输送系统的最新进展

背景

最近，生产“清洁标签”产品作为消除合成成分（特别是防腐剂）的产生和利用的潜在策略，在包括食品行业在内的不同行业中都需要引起广泛关注。包括香精油（EOs）及其主要成分在内的植物基化合物由于其已知的特性（如抗微生物和抗氧化活性）而引起了极大的兴趣。然而，需要将这些亲脂性化合物掺入递送系统中以改善其功能性，应用和消费者感知。许多不同的胶体系统可以用作将EOs输送到食品中的有前途的载体。

范围和方法

在这篇综述中，综述了用于包封EO的食品用胶体递送系统配方的最新技术，并给出了它们在配方和功能方面的优缺点。最终，介绍了一些不同配方的实际食品应用。

主要发现和结论

负载有EO的水包油纳米乳剂和纳米颗粒是最常用的输送系统，特别是在食品工业中。最近的研究更多地集中在新型载体系统的设计上，包括基于表面活性剂的系统，纤维，薄膜和油凝胶。然而，当将递送系统嵌入食品成分的复杂基质中时，仍然缺乏有关其物理化学稳定性以及递送系统功能的研究。EO加载的胶态分散体有可能成为合成防腐剂的有效部分或完全替代品，具体取决于最终产品，输送系统的特性和食品法规。