Intelligent food packaging with the multisensory analysis is promising as the next generation technology of food packaging. The oxygen content in food packaging is one of the crucial parameters affecting the food quality and shelf life. Caviar is among the most nutritious and costly food sources. Here, a photonic oxygen-sensing system, based on the time-resolved phosphorescence spectroscopy of a platinum complex, is developed for non-contact, non-intrusive, and real-time vacuum packaging quality control, and implemented for caviar packaging. The sensor is embedded in protective polyethylene layers and excited with a short-pulsed light emitting diode (LED) source. Integration of a blue pulsed light source, a fast and amplified silicon photodiode controlled by the Spartan-6 field programmable gate array (FPGA), and a long lifetime platinum complex results in a photonics-based oxygen sensor with a fast response and high sensitivity to the vacuum packaging damage, which is suitable for caviar. It is revealed that applying the polyethylene layers protects the caviar from the platinum complex, leaching while not interfering with the sensor functionality. Characterizing the photonic system based on its sensitivity, repeatability, stability, and long-term operation demonstrates its capability for this application.

具有多感官分析功能的智能食品包装有望成为下一代食品包装技术。食品包装中的氧气含量是影响食品质量和保质期的关键参数之一。鱼子酱是最有营养和最昂贵的食物来源之一。这里，开发了一种基于铂络合物时间分辨磷光光谱的光子氧传感系统，用于非接触式、非侵入式、实时真空包装质量控制，并应用于鱼子酱包装。该传感器嵌入聚乙烯保护层中，并由短脉冲发光二极管 (LED) 源激发。蓝色脉冲光源、由 Spartan-6 现场可编程门阵列 (FPGA) 控制的快速放大硅光电二极管以及长寿命铂络合物的集成使得基于光子学的氧传感器具有快速响应和高灵敏度真空包装破损，适用于鱼子酱。据透露，应用聚乙烯层可以保护鱼子酱免受铂络合物的浸出，同时不会干扰传感器的功能。根据光子系统的灵敏度、可重复性、稳定性和长期运行来表征光子系统，证明了其在此应用中的能力。