Fiorentini Cecilia, Leni Giulia, de Apodaca Elena Díaz, Fernández-de-Castro Laura, Rocchetti Gabriele, Cortimiglia Claudia, Spigno Giorgia, Bassani Andrea
Department for Sustainable Food Process (DiSTAS), Università Cattolica del Sacro Cuore, Via Emilia Parmense, 84, 29122 Piacenza, Italy.
TECNALIA, Basque Research and Technology Alliance (BRTA), Parque Tecnológico de Álava, C/Leonardo Da Vinci 11, 01510 Miñano, Álava, Spain.
Antioxidants (Basel). 2024 Apr 26;13(5):519. doi: 10.3390/antiox13050519.
A commercial olive leaf extract (OL), effective against , , , and , was added to three different coating formulations (methylcellulose, MC; chitosan, CT; and alginate, ALG) to produce active polylactic acid (PLA) coated films. Evaluation of these coated PLA films revealed significant inhibition of growth, particularly with the MC and CT formulations exhibiting the highest inhibition rates (99.7%). The coated films were then tested for food contact compatibility with three food simulants (A: 10% ethanol; B: 3% acetic acid; D2: olive oil), selected to assess their suitability for pre-cut hams and ready-to-eat vegetables in relation to overall migration. However, coated films with active functions exhibited migration values in simulants A and B above legal limits, while promising results were obtained for simulant D2, highlighting the need to deeply investigate these coatings' impact on a real food system. Untargeted metabolomics revealed that the type of coating influenced the selective release of certain phenolic classes based on the food simulant tested. The Oxitest analysis of simulant D2 demonstrated that the MC and ALG-coated PLA films slightly slowed down the oxidation of this food simulant, which is an edible vegetable oil.
一种对[具体微生物名称1]、[具体微生物名称2]、[具体微生物名称3]和[具体微生物名称4]有效的商业橄榄叶提取物（OL）被添加到三种不同的包衣配方（甲基纤维素，MC；壳聚糖，CT；藻酸盐，ALG）中，以制备活性聚乳酸（PLA）包衣薄膜。对这些PLA包衣薄膜的评估显示，[具体微生物名称]的生长受到显著抑制，特别是MC和CT配方表现出最高的抑制率（99.7%）。然后对包衣薄膜与三种食品模拟物（A：10%乙醇；B：3%乙酸；D2：橄榄油）进行食品接触兼容性测试，选择这些模拟物是为了评估它们对预切火腿和即食蔬菜在总体迁移方面的适用性。然而，具有活性功能的包衣薄膜在模拟物A和B中的迁移值高于法定限值，而模拟物D2则取得了有前景的结果，这突出表明需要深入研究这些包衣对实际食品体系的影响。非靶向代谢组学表明，包衣类型会根据所测试的食品模拟物影响某些酚类物质的选择性释放。对模拟物D2的Oxitest分析表明，MC和ALG包衣的PLA薄膜略微减缓了这种食品模拟物（一种可食用植物油）的氧化。
