Polyaniline coated plastic optic fiber biosensor for detection of aflatoxin B1 in nut, cereals, beverages, and body fluids

Pal, Tathagata; Aditya, Simhadri; Mathai, Tennyson; Mukherji, Soumyo

doi:10.1016/j.snb.2023.133897

Cited by 20 publications

(3 citation statements)

References 43 publications

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“…S6b†), the stretching frequency at 1690 cm −1 indicated the formation of the imine link. 51–53 The substrate was again washed with DI and then it was treated with 50 μL of 1-aminohexane (hexylamine) for 45 minutes to block any adsorption sites which may result in non-specific binding. Hexylamine solution was prepared by diluting 13 μL of stock in 10 mL of DI water.…”

Section: Methodsmentioning

confidence: 99%

A portable EIS-based biosensor for the detection of microcystin-LR residues in environmental water bodies and simulated body fluids

Mandal,

Pal,

Kumar

et al. 2024

Analyst

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Section: Methodsmentioning

confidence: 99%

A portable EIS-based biosensor for the detection of microcystin-LR residues in environmental water bodies and simulated body fluids

Mandal,

Pal,

Kumar

et al. 2024

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“…The working principle of a POF-based sensor involves measuring changes in the light transmitted through the fibre due to the interaction with the external environment [ 135 ]. There are different types of POF-based sensors, such as intensity-based sensors, interferometric sensors, and fluorescence-based sensors [ 136 , 137 ]. In an intensity-based sensor, the detected light intensity changes in response to the measured variable, while interferometric sensors use the interference of light waves for sensing.…”

Section: Most Widely Employed Optical Fibre Configurations In Sensing...mentioning

confidence: 99%

Optical Fibre-Based Sensors—An Assessment of Current Innovations

Khonina,

Kazanskiy,

Butt

2023

Biosensors

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Optical fibre sensors are an essential subset of optical fibre technology, designed specifically for sensing and measuring several physical parameters. These sensors offer unique advantages over traditional sensors, making them gradually more valuable in a wide range of applications. They can detect extremely small variations in the physical parameters they are designed to measure, such as analytes in the case of biosensing. This high sensitivity allows them to detect subtle variations in temperature, pressure, strain, the refractive index of analytes, vibration, and other environmental factors with exceptional accuracy. Moreover, these sensors enable remote sensing capabilities. Since light signals are used to carry information, the sensing elements can be placed at distant or inaccessible sites and still communicate the data back to the central monitoring system without signal degradation. In recent times, different attractive configurations and approaches have been proposed to enhance the sensitivity of the optical fibre-based sensor and are briefly explained in this review. However, we believe that the choice of optical fibre sensor configuration should be designated based on the specific application. As these sensors continue to evolve and improve, they will play an increasingly vital role in critical monitoring and control applications across various industries.

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“…In particular, intrinsic fiber optic sensor can be divided into three categories; Structured sensor [3][4][5][6][7][8][9][10][11][12][13][14][15], fiber grating sensor [16,17] and interferometric sensor [18][19][20]. The most popular method that has been reported in the literature is structured-type sensor, which includes straight unclad fiber [4,7], tapered fiber [3], side polished fiber [12], reflective (tip) fiber [13,14] and bending fiber [9][10][11]15]. These sensors have been developed to detect properties such as temperature [7], liquid level [11] and chemical properties such as glycerin [12] and ammonia concentration [3,4,9,13,14].…”

Section: Introductionmentioning

confidence: 99%

Ammonia detection in water with balloon-like plastic optical fiber sensor

et al. 2023

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This work presents the demonstration of a plastic optical fiber (POF)-based ammonia sensor. The sensor head is formed by bending an unclad fiber optic sensor into a balloon-like structure. The bending radius of the balloon-like bent fiber optic sensor is varied from 1.0 to 2.5 cm. The performance of each sensor is tested using ammonia solution with concentration ranging from 0 to 15 mg/L. Results show that the optimized performances of the proposed sensor occur when the bending radius is fixed at 1.5 cm. At this bending radius, the sensor illustrates the sensitivity of - 0.0024 (mg/L)-1 with linearity of 0.97 and resolution of - 4.17 mg/L. For comparison, the bent sensor is compared to the straight sensor and performances of the former is found to be more superior. In addition, the balloon-like bent sensor is further tested with real water samples. The sensor sensitivity is found to be - 0.0022 (mg/L)-1 with linearity of 0.95 and resolution of - 4.54 mg/L. The result shows that the sensor has comparable performance in the ammonia detection for both pure ammonia and real water samples. In essence, this balloon-like bent sensor functions without additional coating on the sensor head, making it favorable in terms of the simplicity of the design.

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Polyaniline coated plastic optic fiber biosensor for detection of aflatoxin B1 in nut, cereals, beverages, and body fluids

Cited by 20 publications

References 43 publications

A portable EIS-based biosensor for the detection of microcystin-LR residues in environmental water bodies and simulated body fluids

A portable EIS-based biosensor for the detection of microcystin-LR residues in environmental water bodies and simulated body fluids

Optical Fibre-Based Sensors—An Assessment of Current Innovations

Ammonia detection in water with balloon-like plastic optical fiber sensor

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