Dammak Ilyes, Luciano Carla Giovana, Pérez-Córdoba Luis Jaime, Monteiro Maria Lúcia, Conte-Junior Carlos Adam, Sobral Paulo José do Amaral
Graduate Program in Food Science (PPGCAL), Institute of Chemistry (IQ), Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Avenida Athos da Silveira Ramos, no. 149, Bloco A, 5° andar, sala 534 e 545 Rio de Janeiro, RJ 21941-909 Brazil
Department of Food Engineering, FZEA, University of São Paulo (USP) Pirassununga SP Brazil.
RSC Adv. 2021 Aug 19;11(45):28148-28168. doi: 10.1039/d1ra04888k. eCollection 2021 Aug 16.
The attention towards active films has increased due to consumer demand for high-quality foods without chemical additives. Active biopolymer-based films have shown great potential for active films by impacting food safety, acting as the carriers of various natural antioxidant and antimicrobial compounds, and decreasing environmental pollution from petrol-derived packaging materials. However, there is a wide range of challenges concerning the different characteristics of biopolymers and plasticizers, often hygroscopic/hydrophilic, compared to numerous lipophilic bioactive compounds. Therefore, recent studies have focused on applying oil-in-water emulsion-based systems to enhance the lipophilic bioactive compounds' dispersibility into the film matrix, improving their performance. It is worth emphasizing that resulting complex systems give rise to new challenges such as (i) dispersion technology of the bioactive compounds with minimum adverse effects on its bioactivities, (ii) interactions between different components of the active films, giving rise to new physicochemical properties, and (iii) the change of the diffusion properties of bioactive compounds into the active films, resulting in different release properties. These challenges are profound and critically discussed in this review, as well as the encapsulation techniques employed in preparing emulsions loaded with lipophilic bioactive compounds for the active film development. An outlook of future directions in the research, development, and application of these active films are given.
由于消费者对无化学添加剂的高品质食品有需求,对活性薄膜的关注度有所提高。基于活性生物聚合物的薄膜通过影响食品安全、作为各种天然抗氧化剂和抗菌化合物的载体以及减少石油衍生包装材料对环境的污染,在活性薄膜方面显示出巨大潜力。然而,与众多亲脂性生物活性化合物相比,生物聚合物和增塑剂具有不同的特性,通常具有吸湿性/亲水性,这带来了一系列广泛的挑战。因此,最近的研究集中在应用水包油乳液体系来提高亲脂性生物活性化合物在薄膜基质中的分散性,改善其性能。值得强调的是,由此产生的复杂体系带来了新的挑战,例如:(i)生物活性化合物的分散技术,对其生物活性产生最小的不利影响;(ii)活性薄膜不同组分之间的相互作用,产生新的物理化学性质;(iii)生物活性化合物向活性薄膜扩散性质的变化,导致不同的释放性质。本综述对这些挑战进行了深入且批判性的讨论,以及在制备用于活性薄膜开发的负载亲脂性生物活性化合物的乳液时所采用的包封技术。还给出了这些活性薄膜在研究、开发和应用方面的未来方向展望。