Detection of Parasites in Fish by Superconducting Quantum Interference Device Magnetometry

Jenks, W. G.; Bublitz, C.G.; Choudhury, Gour S.; Ma, Yanxue; Wikswo, John P.

doi:10.1111/j.1365-2621.1996.tb10891.x

Cited by 10 publications

(4 citation statements)

References 22 publications

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“…In the fishing industry, the primary optical method of detecting parasites in fish fillets is time consuming, labour intensive and only marginally effective. Jenks and co-workers at Vanderbilt showed [49] that parasites found in certain ocean-going fish have a magnetic signature similar to spherical holes in a conducting plate when current was passed through the fish. This discovery could lead to an automated process for the detection and removal of such parasites.…”

Section: The Current Injection Techniquementioning

confidence: 99%

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SQUIDs for nondestructive evaluation

Jenks

Sadeghi

Wikswo

1997

J. Phys. D: Appl. Phys.

141

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We attempt a comprehensive review of all published research in nondestructive evaluation (NDE) performed with the superconducting quantum interference device (SQUID) magnetometer since the first work was reported in the mid-1980s. The SQUID is the most sensitive detector of magnetic flux known. The energy sensitivity of the SQUID may make it the most sensitive detector of any kind. The research on SQUIDs for NDE is based on the promise of that sensitivity and on the various other desirable properties developed for SQUID instrumentation in biomagnetism and other fields. The sensitivity of SQUID instruments down to very low frequencies allows them to function as eddy-current sensors with unparalleled depth resolution, and to image the static magnetization of paramagnetic materials and the flow of near-dc corrosion currents. The wide dynamic range of the SQUID makes it possible to image defects in steel structures and to measure the magnetomechanical behaviour of ferromagnetic materials with high sensitivity. In the last decade SQUID instrumentation designed specifically for NDE has appeared and improved the spatial resolution of most work to roughly 1 mm, with promise of another order of magnitude improvement within the next five years. Algorithms for flaw detection and image deconvolution have begun to flourish. With many talented, industrious people in the field, the future of SQUID NDE looks bright, provided the crucial first niche can be found.

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Section: The Current Injection Techniquementioning

confidence: 99%

“…Inexpensive small items may also be a possibility provided they can be scanned very quickly. Jenks et al [49] recently estimated 1-2 s scan times for detection of parasites in fish fillets, an apparently mundane NDE problem that accounts for approximately one-half the cost of harvesting and marketing certain white fish.…”

Section: Future Outlookmentioning

confidence: 99%

SQUIDs for nondestructive evaluation

Jenks

Sadeghi

Wikswo

1997

J. Phys. D: Appl. Phys.

141

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“…One problem of the ultrasonic method is the requirement of direct coupling between detector and measurement medium, and this is one reason why the technique has not been industrialized. Jenks and others (1996) obtained promising results by measurement of the electrical conductivity in fish and parasites. The method, however, requires the fillet to be placed in a saline solution and this may be impractical in view of possible industrialization.…”

Section: Introductionmentioning

confidence: 99%

Detection of Nematodes in Cod (Gadus morhua) Fillets by Imaging Spectroscopy

Heia¹,

Sivertsen²,

Stormo³

et al. 2007

Journal of Food Science

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A promising method for detection of parasites in whitefish fillets has been developed. By use of imaging spectroscopy it is possible to record both spectral and spatial information from an object. In this work it is shown that by applying a white light transmission setup and imaging spectroscopy to cod (Gadus morhua) fillets, it is possible to make spectral images containing information to differentiate between fish muscle and parasites. The spectral images are analyzed by discriminant partial least square regression as well as image-filtering techniques. The method identifies parasites on the surface of the fillets as well as embedded parasites. One parasite was detected at 0.8 cm below the fillet surface, which is 2 to 3 mm deeper than what can be found by manual inspection of fish fillets. The method is nonintrusive and should thus be feasible for industrial purposes.

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“…These methods are being applied by fishery operators or laboratories. Recent techniques including ultraviolet illumination (Adams et al, 1999;Levsen et al, 2005;Marty, 2008), ultrasound (Hafsteinsson et al, 1989;Nilsen et al, 2008), X-rays and conductivity (Nilsen et al, 2008), electromagnetism (Choudhury and Bublitz, 1994), magnetometry ( Jenks et al, 1996), immunological techniques (Xu et al, 2010;Rodríguez-Mahillo et al, 2010), polymerase chain reaction (PCR)-based (Zhu et al, 2002;Abe et al, 2005;Pontes et al, 2005), real-time PCR (Herrero et al, 2010;Fang et al, 2011), phage display (Ló pez et al, 2011), real-time fluorescence resonance energy transfer (Monis et al, 2005;Intapan et al, 2008), or imaging spectroscopy (Heia et al, 2007) are under continuous improvement processes.…”

mentioning

confidence: 99%

A Scoring System Approach for the Parasite Predictive Assessment of Fish Lots: A Proof of Concept with Anisakids

Llarena-Reino

Abollo

Pascual

2013

Foodborne Pathogens and Disease

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A total of 982 individuals distributed in 11 lots belonging to 10 fish species from three Atlantic FAO fishing areas were sampled and examined to detect the presence of anisakid larvae in fish muscle. After hazard identification by genetic sequencing and exposure assessment by anatomic extent and demographic characterization of infection, all data were fitted for each fish species to a new proposed scoring schema of parasite prediction. In the absence of a criterion standard method for inspection and precise definition of the quantum satis for parasites in contaminated fish lots, the inspection rating scheme called SADE (Site of infection, Assurance of quality, Demography, Epidemiology) may help fish industries to precisely handle and to evaluate the likely outcome of infected fish lots after being diagnosed. For this purpose, a supporting flow diagram for decision was defined and suggested. This new performance assessment tool has the aim of staging fish lots, thus helping in planning manufacture, commercial, and research decisions during self-management programs. This novel scoring system provides an improved inspection format by implementing the occurrence stratification for parasites to guide Hazard Analysis and Critical Control Points (HACCP) programs for the uniform exchange of information among fish industries, administration and researchers, thus facilitating standardization and communication. In the future, this scoring version could be validated (in terms of classification and wording) for similar overall predictive purposes in other muscular parasites infecting seafood products.

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Detection of Parasites in Fish by Superconducting Quantum Interference Device Magnetometry

Cited by 10 publications

References 22 publications

SQUIDs for nondestructive evaluation

SQUIDs for nondestructive evaluation

Detection of Nematodes in Cod (Gadus morhua) Fillets by Imaging Spectroscopy

A Scoring System Approach for the Parasite Predictive Assessment of Fish Lots: A Proof of Concept with Anisakids

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