Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology & Business University (BTBU), China; College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China.
Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology & Business University (BTBU), Beijing 100048, China.
Int J Biol Macromol. 2018 Jul 1;113:487-493. doi: 10.1016/j.ijbiomac.2018.01.194. Epub 2018 Feb 6.
To obtain a safe and biodegradable material for food packaging, this study developed a facile and green process of anchoring nisin onto oxidized cellulose through a simple Schiff base reaction for long-term antimicrobial active food packaging. To the best of our knowledge, this is the first report of such a packaging. The grafting reaction between the amino groups of nisin and the aldehyde groups of oxidized cellulose films was successfully established to obtained a nisin anchored cellulose films (NC) membrane; the structure was characterized with Fourier transform infrared spectroscopy, scanning electron microscopy, and thermogravimetric analysis. The NCs membrane had an outstanding transparent property of above 90% transmittance through 300nm to 800nm; while, the barrier properties against oxygen remain excellent. The thermal stability of the NCs membrane remained excellent and enabled an easier degradation than the original cellulose membrane. The NCs membrane displayed good antimicrobial activity against Alicyclobacillus acidoterrestris DSM 3922T in a long-term way, thus demonstrating good potential as food packaging material. The obtained results are promising and confirm the development of NCs membranes as green materials for food packaging.
为了获得安全且可生物降解的食品包装材料，本研究通过简单的希夫碱反应，将乳链菌肽锚定到氧化纤维素上，开发了一种简便且绿色的方法，用于长期抗菌活性的食品包装。据我们所知，这是此类包装的首次报道。乳链菌肽的氨基与氧化纤维素膜的醛基之间的接枝反应成功建立，得到了乳链菌肽锚定纤维素膜（NC）膜；采用傅里叶变换红外光谱、扫描电子显微镜和热重分析对其结构进行了表征。NCs 膜在 300nm 至 800nm 之间具有超过 90%的透光率的出色透明性能；同时，其对氧气的阻隔性能仍然优异。NCs 膜的热稳定性仍然优异，并且比原始纤维素膜更容易降解。NCs 膜对耐热性好氧环状芽孢杆菌 DSM 3922T 具有长期的抗菌活性，因此作为食品包装材料具有良好的应用潜力。研究结果具有广阔的应用前景，证实了 NCs 膜作为食品包装绿色材料的开发。
