School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China.
School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China.
Int J Biol Macromol. 2024 Jun;271(Pt 1):132353. doi: 10.1016/j.ijbiomac.2024.132353. Epub 2024 May 18.
Traditional active packaging materials are easily affected by the environment, resulting in their inability to release active substances in specified quantities at specified times and locations. In this study, MCM-41 was used as a thymol (THY) carrier and added to the potato starch (PS) matrix to design an intelligent release active packaging film based on storage microenvironment. MCM-41 encapsulation improved thermal stability of THY. THY-MCM-41 addition significantly improved the tensile strength (TS, 7.18 MPa) of the film (P < 0.05) and endowed the film excellent gas and water barrier protection. THY release was responsive to temperature and relative humidity (RH), and the First-order model better explained the THY release pattern (R > 0.980). The THY-MCM-41/PS film exhibited long-term antibacterial effect during 10-day storage due to the sustained release of THY. Additionally, strawberries packaged in the THY-MCM-41/PS film exhibited the best sensory characteristics during 5-day storage (25 °C and 50 % RH). Overall, the present THY-MCM-41/PS film provides a novel alternative for the sustained release of active substances in order to achieve the excellent preservation of goods such as fruits and vegetables.
传统的活性包装材料容易受到环境的影响，导致它们无法在特定的时间和地点以特定的量释放活性物质。在这项研究中，MCM-41 被用作百里香酚（THY）的载体，并添加到马铃薯淀粉（PS）基质中，设计了一种基于储存微环境的智能释放活性包装膜。MCM-41 的包封提高了 THY 的热稳定性。THY-MCM-41 的添加显著提高了薄膜的拉伸强度（TS，7.18 MPa）（P < 0.05），并赋予薄膜优异的气体和水阻隔保护。THY 的释放对温度和相对湿度（RH）有响应，一阶模型更好地解释了 THY 的释放模式（R > 0.980）。由于 THY 的持续释放，THY-MCM-41/PS 薄膜在 10 天的储存期内表现出长期的抗菌效果。此外，在 5 天的储存期内（25°C 和 50% RH），用 THY-MCM-41/PS 薄膜包装的草莓表现出最佳的感官特性。总的来说，本研究中的 THY-MCM-41/PS 薄膜为活性物质的持续释放提供了一种新的选择，以实现对水果和蔬菜等商品的优异保存。
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