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Naphthyl End‐Capped Terthiophene‐Based Chemiresistive Sensors for Biogenic Amine Detection and Meat Spoilage Monitoring.
- Source :
- Chemistry - An Asian Journal; Aug2019, Vol. 14 Issue 15, p2751-2758, 8p
- Publication Year :
- 2019
-
Abstract
- A reliable and sensitive detection of biogenic amines (BAs) is essential to ensure food safety and maintain public health. In this study, two naphthyl end‐capped terthiophene derivatives, namely, 5‐(naphthalen‐1‐yl)‐2,2′:5′,2′′‐terthiophene (NA‐3T) and 5,5′′‐di(naphthalen‐1‐yl)‐2,2′:5′,2′′‐terthiophene (NA‐3T‐NA), were employed to develop chemiresistive sensors for detecting gaseous BAs. In contrast to NA‐3T, the NA‐3T‐NA‐based sensor showed a higher sensitivity for trimethylamine (TMA) with an experimental detection limit lower than 22 ppm, and for aromatic BAs, including dopamine, histamine, tryptamine, and tyramine. Additionally, the recovery time for TMA was found to be shorter than 23 s. In addition, both sensors were successfully used for an in situ evaluation of meat freshness by monitoring the concentration of relevant volatile BAs. The difference in the sensing performances of the two chemiresistive sensors was tentatively ascribed to different packing structures of the derivatives and the adlayer structures of the films developed with the compounds. [ABSTRACT FROM AUTHOR]
- Subjects :
- BIOGENIC amines
MEAT spoilage
DETECTORS
PUBLIC safety
TRYPTAMINE
DETECTION limit
Subjects
Details
- Language :
- English
- ISSN :
- 18614728
- Volume :
- 14
- Issue :
- 15
- Database :
- Complementary Index
- Journal :
- Chemistry - An Asian Journal
- Publication Type :
- Academic Journal
- Accession number :
- 137846509
- Full Text :
- https://doi.org/10.1002/asia.201900622