申请人:University of Florida Research Foundation, Inc.
公开号:US20180284092A1
公开(公告)日:2018-10-04
Nanoparticles and compositions thereof are provided for detecting and/or preventing food spoilage. Methods of making the nanoparticles and compositions, and methods of using the nanoparticles and compositions, e.g. in food packaging, are also provided. The nanoparticles can have a hydrophobic core containing a hydrophobic active agent, e.g. a hydrophobic dye and/or an antimicrobial agent, for detecting and/or preventing food spoilage. The nanoparticles can also have a copolymer of a hydrophobic polymer repeat unit, e.g. styrene or lactic acid, and a pH responsive dendrimer repeat unit. The pH responsive dendrimer repeat unit can have a pH responsive amine core having a plurality of branched acrylate arms extending therefrom. The nanoparticles can be chemically stable at neutral pH, and then release the hydrophobic active agent at a pH range indicative of food spoilage. By releasing the hydrophobic dye and/or antimicrobial agent, the nanoparticles can detect and/or inhibit food spoilage.
提供了用于检测和/或预防食品变质的纳米颗粒及其组合物。还提供了制备纳米颗粒和组合物的方法,以及使用纳米颗粒和组合物的方法,例如在食品包装中使用。纳米颗粒可以具有含有疏水活性剂的疏水核心,例如疏水染料和/或抗菌剂,用于检测和/或预防食品变质。纳米颗粒还可以具有疏水聚合物重复单元的共聚物,例如苯乙烯或乳酸,以及pH响应性树枝重复单元。pH响应性树枝重复单元可以具有具有多个分支丙烯酸酯臂的pH响应性胺核心。纳米颗粒在中性pH下可以化学稳定,然后在与食品变质相关的pH范围内释放疏水活性剂。通过释放疏水染料和/或抗菌剂,纳米颗粒可以检测和/或抑制食品变质。