Salević Ana, Stojanović Dušica, Lević Steva, Pantić Milena, Đorđević Verica, Pešić Radojica, Bugarski Branko, Pavlović Vladimir, Uskoković Petar, Nedović Viktor
Department of Food Technology and Biochemistry, Faculty of Agriculture, University of Belgrade, Nemanjina 6, 11080 Belgrade, Serbia.
Department of Materials Science and Engineering, Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia.
Foods. 2022 Jan 29;11(3):390. doi: 10.3390/foods11030390.
In this study, in order to develop zein-based, edible, functional food-contact materials in different forms incorporating sage extract (10, 20, and 30%), solvent casting and electrospinning were employed. The study aimed to assess the effects of the applied techniques and the extract's incorporation on the materials' properties. The solvent casting generated continuous and compact films, where the extract's incorporation provided more homogenous surfaces. The electrospinning resulted in non-woven mats composed of ribbon-like fibers in the range of 1.275-1.829 µm, while the extract's incorporation provided thinner and branched fibers. The results indicated the compatibility between the materials' constituents, and efficient and homogenous extract incorporation within the zein matrices, with more probable interactions occurring during the solvent casting. All of the formulations had a high dry matter content, whereas the mats and the formulations incorporating the extract had higher solubility and swelling in water. The films and mats presented similar DPPH and ABTS radical scavenging abilities, while the influence on and subsp. serovar Typhimurium bacteria, and the growth inhibition, were complex. The antioxidant and antibacterial activity of the materials were more potent after the extract's incorporation. Overall, the results highlight the potential of the developed edible materials for use as food-contact materials with active/bioactive functionality.
在本研究中，为了开发包含鼠尾草提取物（10%、20%和30%）的不同形式的基于玉米醇溶蛋白的可食用功能性食品接触材料，采用了溶剂浇铸法和静电纺丝法。该研究旨在评估所应用的技术以及提取物的添加对材料性能的影响。溶剂浇铸法生成了连续且致密的薄膜，其中提取物的添加使表面更加均匀。静电纺丝法得到了由1.275 - 1.829 µm范围内的带状纤维组成的非织造垫，而提取物的添加使纤维更细且有分支。结果表明材料成分之间具有相容性，并且提取物能有效且均匀地融入玉米醇溶蛋白基质中，在溶剂浇铸过程中更可能发生相互作用。所有配方的干物质含量都很高，而包含提取物的垫和配方在水中具有更高的溶解度和溶胀性。薄膜和垫表现出相似的DPPH和ABTS自由基清除能力，而对鼠伤寒沙门氏菌及其亚种血清型的影响以及生长抑制作用则较为复杂。提取物添加后材料的抗氧化和抗菌活性更强。总体而言，结果突出了所开发的可食用材料作为具有活性/生物活性功能的食品接触材料的潜力。
