A magnetoelastic resonance biosensor immobilized with polyclonal antibody for the detection of Salmonella typhimurium

Biosensors Applications in Agri-food Industry

“…However, binding between the antibody and the polar surface (antibody film) will occur when the support emerges from the liquid. The support will have transduction resonance properties, i.e., when affinity with antigen takes place, the resonance frequency will be affected due to increased mass in the crystal support (Guntupalli et al, 2007). The sensor platform used by Guntupalli et al (2007) is made of magnetostrictive Fe 40 Ni 38 Mo 4 B 18 and immobilized polyclonal rabbit antibodies using the LB method to detect Salmonella typhimurium by measuring changes in surface pressure by the Wilhelmy method.…”

“…The support will have transduction resonance properties, i.e., when affinity with antigen takes place, the resonance frequency will be affected due to increased mass in the crystal support (Guntupalli et al, 2007). The sensor platform used by Guntupalli et al (2007) is made of magnetostrictive Fe 40 Ni 38 Mo 4 B 18 and immobilized polyclonal rabbit antibodies using the LB method to detect Salmonella typhimurium by measuring changes in surface pressure by the Wilhelmy method. The system reaches equilibrium in the surface in order to reduce vibrations generated by external factors, in such a way that frequency and amplitude changes are only caused by mass variations in the crystal.…”

“…Detection of pathogens or bacterial cells using a magnetoelastic resonant biosensor by the change in amplitude of the resonant wave, due to frequency variation when the analyte binds to the receptor (Guntupalli et al, 2007).…”

A Wireless Magnetoelastic Sensor for Urinary 2-Naphthol Detection Based on the Precipitation of 2-Naphthol with Diazonium Salts

“…The magnetoelastic sensor thus has the unique characteristics of being able to wirelessly detect resonant frequency changes of the magnetoelastic strip based on the physical dimensions of the magnetoelastic strip, the compositions attached on the strip and the environment around the strip. These kind of biosensor have been developed for the determination of physical parameters, such as pressure, humidity, flow rate, 19 liquid viscosity, pH, 20,21 and for the detection of biological substances including glucose, 22 bacteria, [23][24][25][26] protein, 27 blood coagulation, 28 antigen immunoassay 29 and breast cancer cell. 30 However, no report has been found for the real-time and in situ monitoring of 2-NAP by magnetoelastic sensors.…”

Myco-toxins Monitoring Device and their Management Strategies through Detoxifying Agents in Feed

“…Transmit an acoustic wave along a single crystal face from one location to another (Bowers et al, 1991, Guntupalli et al, 2007. The resonance frequency of these acoustic waves depends on physical properties of piezoelectric materials and these physical properties changes i e. mass, elasticity, conductivity and dielectric properties from mechanical or electrical variations.…”