Vacuum Packaging Sensor Based on Time-Resolved Phosphorescence Spectroscopy  

作　　者：Esmaeil HEYDARI Fatemeh YARI Hossein ZARE-BEHTASH 

机构地区：[1]Nanophotonic Sensors&Optofluidics Lab,Faculty of Physics,Kharazmi University,Tehran 15719-14911,Iran

出　　处：《Photonic Sensors》2024年第1期1-12,共12页光子传感器（英文版）

摘　　要：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 vacum 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.

关 键 词：CAVIAR photoluminescence lifetime oxygen sensor platinum porphyrin complex vacuum packaging 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]