Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7141550 | Sensors and Actuators B: Chemical | 2018 | 27 Pages |
Abstract
A novel bioanalysis method for sensitive, rapid and field-based detection of okadaic acid (OA) is in great demand for environmental monitoring and food security. In this study, we reported a biosensing system consisting of a smartphone-based system and cell viability biosensor (CVB) for OA spot fast detection. CVB was constructed by combing living cells and cell counting kit (CCK-8). Thereinto, living cells could be used as reagent without adherent culture on the device surface, and adherent cells and suspension cells were both applicable for cell type selection. The smartphone-based system - bionic electronic eye (Bionic e-Eye) was composed of portable illumination provider and smartphone. The homemade application program (App) - iPlate Monitor integrated the software functions of real-time image acquisition and analysis, data display and storage and instant data sharing. In the measurement, the system was demonstrated to detect OA at concentration as low as 3.4083 μg/L and 13.4456 μg/L by using HepG2 and THP-1 cells, respectively. In addition, this system distinguished OA versus different marine toxins such as gonyautoxin2&3 (GTX2&3) and brevetoxin-2 (PbTx-2) in high specificity. Consequently, the smartphone-based biosensing platform provided a convenient, low-cost, easy-to-use and efficient approach for spot rapid detection of marine toxins such as OA.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Kaiqi Su, Longjie Zhong, Yuxiang Pan, Jiaru Fang, Quchao Zou, Zijian Wan, Ping Wang,