含益生菌可食性膜或涂层的功能化与应用

Functionalization and application of edible film or coating containing probiotics

可食性膜或涂层是一个在食品工业具有创新性、可持续性,且低成本、环保的新颖包装材料。用于食品包装的可食性膜需要满足多种技术先决条件,如机械耐久性、对水蒸气和气体的低渗透性、良好的光学性能,及对化学或微生物变化的敏感性低以及中性的感官特征等。近年来,将生物活性化合物(抗氧化剂、微量营养素、抗微生物剂、天然色素)和有益的活的微生物制备成功能化的可食用薄膜和涂层受到了广泛关注。益生菌已被证明具有显著的益生效果,将活的益生菌和合生元用于可食用包装既能帮助益生菌发挥功效,又能起到延长食品保质期的作用,是一项颇具挑战性的任务。本文旨在介绍益生菌或合生元用于可食用薄膜和涂层领域的技术特点,重在讨论基质组成、成膜方法对益生菌细胞生物学活性的影响,以及薄膜作为益生菌载体程序性释放的能力和目前在食品工业的应用情况,为开发这类具有双功能的新型包装材料提供参考。

Edible film or coating is a novel packaging concept with innovation,low cost,sustainability and environmental protection in food industry.Edible films used in food packaging need to meet a variety of technical prerequisites,such as mechanical durability,low permeability to water vapor and gas,good optical properties,low sensitivity to chemical or microbial changes,and neutral sensory characteristics.In recent years,the preparation of edible films and coatings from bioactive compounds(antioxidants,micronutrients,antimicrobial agents,natural pigments)and beneficial living microorganisms has attracted extensive attention.Probiotics have been proved to have significant probiotic effects.The use of live probiotics and synbiotics in edible packaging can not only help probiotics play a role,but also prolong the shelf life of food,which is a challenging task.The purpose of this paper is to introduce the technical characteristics of probiotics or synbiotics used in edible film and coating field,focusing on the influence of matrix composition and film-forming methods on the biological activity of probiotic cells,as well as the programmed release ability of film as probiotic carrier and the current application in food industry,so as to provide reference for the development of this kind of dual functional packaging materials.