School of Chemistry and Life Science, Advanced Institute of Materials Science, Changchun University of Technology, 2055 Yanan Street, Changchun, Jilin 130012, PR China.
School of Chemistry and Life Science, Advanced Institute of Materials Science, Changchun University of Technology, 2055 Yanan Street, Changchun, Jilin 130012, PR China.
Food Chem. 2023 Nov 30;427:136691. doi: 10.1016/j.foodchem.2023.136691. Epub 2023 Jun 22.
Foodborne pathogens seriously endanger people's health and cause significant economic losses. Therefore, it is of great significance to design potent packaging materials with the function of alleviating food spoiling and extending shelf life. Here, three BODIPY derivatives (named as N-BDPI, B-BDPI and P-BDPI) were synthesized by substituting the 8-position of BODIPY with naphthalene, biphenyl and pyridine groups, respectively, and their photophysical properties as well as antibacterial capacities were characterized. The results demonstrated that N-BDPI had the best singlet oxygen generation ability and could completely kill S. aureus under light irradiation with the minimum inhibitory concentration of only 50 nmol/L. In addition, 1.0% BDPI@PVA/AL composite film was fabricated by doping N-BDPI into polyvinyl alcohol (PVA) and alkaline lignin (AL) exhibited high antibacterial activity on Gram-positive bacteria. The coating of strawberries with 1.0% BDPI@PVA/AL film not only effectively inhibited the mildew of strawberries, but also extended their shelf life.
食源性致病菌严重危害人们的健康并造成巨大的经济损失。因此，设计具有缓解食物变质和延长保质期功能的有效包装材料具有重要意义。在这里，通过用萘、联苯和吡啶基团取代 BODIPY 的 8 位，合成了三种 BODIPY 衍生物（分别命名为 N-BDPI、B-BDPI 和 P-BDPI），并对它们的光物理性质和抗菌能力进行了表征。结果表明，N-BDPI 具有最好的单线态氧生成能力，在光照下仅用 50 nmol/L 的最小抑菌浓度即可完全杀死金黄色葡萄球菌。此外，通过将 N-BDPI 掺杂到聚乙烯醇（PVA）和碱性木质素（AL）中制备了 1.0%BDPI@PVA/AL 复合膜，该复合膜对革兰氏阳性菌表现出很高的抗菌活性。用 1.0%BDPI@PVA/AL 膜对草莓进行涂层不仅可以有效抑制草莓的霉变，还可以延长其保质期。
