Near-Infrared (NIR) Technique for Imaging Food Materials

The results of imaging experiments in food materials are presented, using near-infrared wavelengths. The technique uses a modulated source and a lock-in amplifier detection circuit to give a high sensitivity to changes in through-transmission signal levels. This is shown to lead to a set of images,...

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Bibliographic Details
Published in:Journal of food science 2009, Vol.74 (1), p.E23-E33
Main Authors: Pallav, P, Diamond, G.G, Hutchins, D.A, Green, R.J, Gan, T.H
Format: Article
Language:English
Subjects:
Biological and medical sciences
Consumer Product Safety
detection
Food
food analysis
Food Analysis - instrumentation
Food Analysis - methods
food contamination
Food Contamination - analysis
Food industries
Food Inspection - instrumentation
Food Inspection - methods
Food products
Food science
foods
foreign body
Fundamental and applied biological sciences. Psychology
Humans
image analysis
near infrared (NIR)
near-infrared spectroscopy
NIR property
Spectroscopy, Near-Infrared - methods
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Summary:The results of imaging experiments in food materials are presented, using near-infrared wavelengths. The technique uses a modulated source and a lock-in amplifier detection circuit to give a high sensitivity to changes in through-transmission signal levels. This is shown to lead to a set of images, whereby the internal content of various foods can be imaged. Examples are presented of the detection of foreign bodies, both metallic and nonmetallic, to illustrate the imaging performance.
ISSN:0022-1147
1750-3841
DOI:10.1111/j.1750-3841.2008.01011.x