A remote-query sensor for predictive indication of milk spoilage

Huang, Sijing; Ge, Shutian; He, Lingwen; Cai, Qingyun; Grimes, Craig A.

doi:10.1016/j.bios.2008.01.036

Cited by 28 publications

(17 citation statements)

References 34 publications

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“…This polymer has been used by other authors in the literature [33][34][35][36][37][38] as a protective layer of the magnetoelastic ribbons due to its excellent binding properties to the metallic glass surfaces and its long-term stability in aqueous environments where most of the polymers fail. We discovered that BAYHYDROL-110 shows a very positive response to several VOCs, with various sensitivities.…”

Section: Methodsmentioning

confidence: 98%

“…The advantages of using magnetoelastic sensors are (a) the remote sensing by means of pick-up coils, (b) the sensor's low price which can be used on a disposable basis, and (c) the low power and cost of the equipment. Further information concerning the principles of operation, as well as the design and applications of magnetoelastic sensors [34][35][36][37], can be found in the review of Grimes at al. [21] and in the references mentioned therein.…”

Section: Introductionmentioning

confidence: 98%

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A polymer-Metglas sensor used to detect volatile organic compounds

Baimpos

Boutikos

Nikolakis

et al. 2010

Sensors and Actuators A: Physical

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Section: Methodsmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 98%

A polymer-Metglas sensor used to detect volatile organic compounds

Baimpos

Boutikos

Nikolakis

et al. 2010

Sensors and Actuators A: Physical

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“…However, the use of specific metabolites of S. aureus to indicate its presence in an enrichment broth can greatly reduce the time required to detect the bacterium [4]. Protein A (ProtA) is a protein covalently anchored to the cell wall of S. aureus with a molecular weight between 35 and 50 kDa.…”

Section: Introductionmentioning

confidence: 99%

“…It exists as a harmless commensal in approximately 25% of humans [2,3] but also can cause skin and soft tissue infections, pneumonia, pericarditis and even sepsis [3,4]. These illnesses are produced by the ingestion of food contaminated by enterotoxins synthesized by S. aureus, which produce gastroenteritis characterized by nausea, vomiting, abdominal cramps and diarrhoea within 2-6 h after the ingestion [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Sensitive and rapid amperometric magnetoimmunosensor for the determination of Staphylococcus aureus

et al. 2012

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The preparation and characteristics of a disposable amperometric magnetoimmunosensor, based on the use of functionalized magnetic beads (MBs) and gold screen-printed electrodes (Au/SPEs), for the specific detection and quantification of Staphylococcal protein A (ProtA) and Staphylococcus aureus (S. aureus) is reported. An antiProtA antibody was immobilized onto ProtA-modified MBs, and a competitive immunoassay involving ProtA antigen labelled with HRP was performed. The resulting modified MBs were captured by a magnetic field on the surface of tetrathiafulvalene-modified Au/SPEs and the amperometric response obtained at -0.15 V vs the silver pseudo-reference electrode of the Au/SPEs after the addition of H2O2 was used as transduction signal. The developed methodology showed very low limits of detection (1 cfu S. aureus/mL of raw milk samples), and a good selectivity against the most commonly involved foodborne pathogens originating from milk. These features, together with a short analysis time (2 h), the simplicity, and easy automation and miniaturization of the required instrumentation make the developed methodology a promising alternative in the development of devices for on-site analysis.

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“…They are mostly referred to as an inductor/capacitor (LC) sensor, which integrates a series-connected interdigital capacitor (IDC) with a spiral inductor printed on a glass substrate or silicon substrate [8][9][10][11][12]. A wireless magnetic sensing device with LC resonant-circuit was developed for the in-situ monitoring of the growth of human breast cancer cells [13], detection of E. coli O157:H7 [14], or monitoring the bacterial contamination of milk [15]. All these methods are mostly based on the impedance measurement.…”

Section: Introductionmentioning

confidence: 99%

Inductance-based sensing technique for wireless, remote-query measurement in liquid media

Nie

Huang

et al. 2010

Sci. China Chem.

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A novel inductance-based sensing technique is presented for remote query measurement in different liquid media including organic solvents and inorganic solutions. The inorganic solutions tested included salt solutions of different concentrations, and the organic solvents detected included 1,4-dioxane and tetrahydrofuran. To extend the application of the sensor, bacterial culture media were also detected, and the growth of Escherichia coli (E. coli) was controlled. The influential factors which may affect the inductance responses were studied in detail. It was found that quantitative relationships exist between the sensor's inductance response and the physico-chemical parameters of the liquid media. The sensor's inductance response (L) decreases with the increase of salt concentration (C) and its ionic valence (e) according to a semi-logarithmic equation LgL = aeC + b, where a and b are constants, which is in accordance with the theoretically deduced equation. The inductance variation rate (K) increases directly with the temperature (T): K = a′ T + b′. As for organic solutions, the sensor's inductance was found to increase with the increasing permittivity of the organic solution. The wireless sensor we designed is simple and easy to manipulate. It has the potential for remote determination of not only chemical substances but also microbiological species such as bacteria. Using the newly developed inductance-based sensor, the pathogenic E. coli was monitored with a limit of detection of 10 cells/mL and a linear semi-logarithmic range of 1.0 × 10 1 to 2.5 × 10 9 cells/mL. inductance sensor, remote-query, liquid medium, wireless, bacterial detection, E. coli.

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A remote-query sensor for predictive indication of milk spoilage

Cited by 28 publications

References 34 publications

A polymer-Metglas sensor used to detect volatile organic compounds

A polymer-Metglas sensor used to detect volatile organic compounds

Sensitive and rapid amperometric magnetoimmunosensor for the determination of Staphylococcus aureus

Inductance-based sensing technique for wireless, remote-query measurement in liquid media

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