標題: One-Minute Fish Freshness Evaluation by Testing the Volatile Amine Gas with an Ultrasensitive Porous-Electrode-Capped Organic Gas Sensor System
作者: Chang, Liang-Yu
Chuang, Ming-Yen
Zan, Hsiao-Wen
Meng, Hsin-Fei
Lu, Chia-Jung
Yeh, Ping-Hung
Chen, Jian-Nan
物理研究所
光電工程學系
Institute of Physics
Department of Photonics
關鍵字: gas sensor;amine gas;fish freshness;volatile basic nitrogen;ammonia;dimethylamine;trimethylamine;P3HT
公開日期: 1-Apr-2017
摘要: In this work, we successfully demonstrate a fast method to determine the fish freshness by using a sensing system containing an ultrasensitive amine gas sensor to detect the volatile amine gas from the raw fish meat. When traditional titration method takes 4 h and complicated steps to test the total volatile basic nitrogen (TVB-N) as a worldwide standard for fish freshness, our sensor takes 1 min to deliver an electrical sensing response that is highly correlated with the TVB-N value. When detecting a fresh fish with a TVB-N as 18 mg/100 g, the sensor delivers an effective ammonia concentration as 100 ppb. For TVB-N as 28-35 mg/100 g, a well-accepted freshness limit, the effective ammonia concentration is as 200-300 ppb. The ppb-regime sensitivity of the sensor and the humidity control in the sensing system are the keys to realizing fast and accurate detection. It is expected that the results in this report enable the development of on-site freshness detection and real-time monitoring in a fish factory.
URI: http://dx.doi.org/10.1021/acssensors.6b00829
http://hdl.handle.net/11536/145459
ISSN: 2379-3694
DOI: 10.1021/acssensors.6b00829
期刊: ACS SENSORS
Volume: 2
起始頁: 531
結束頁: 539
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