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Howard Mark (hlmark)
Senior Member
Username: hlmark

Post Number: 328
Registered: 9-2001
Posted on Wednesday, June 09, 2010 - 6:19 pm:   

David - at a fairly crude level, you can tell the difference between plant and animal material (in an either/or scenario) using NIR this way:

Plants contain cellulose and/or starch, which are carbohydrates. Both of these plant components have a (fairly broad) absorbance band at 2100 nm. Animal material contains neither of those components, and the 2100 nm band characeristic of those two carbohydrates is missing.

\o/
/_\
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Baeten Vincent (baeten)
New member
Username: baeten

Post Number: 1
Registered: 2-2009
Posted on Wednesday, June 09, 2010 - 4:08 pm:   

Dear David,

You can upload (free access) a recent review of the methods applied to this problematic at the following address: http://www.bib.fsagx.ac.be/base/content/v13ns.html. (Fumi�re et al., 2009. Biotechnol. Agron. Soc. Environ. 2009 13(S), 59-70). The review includes the perspective of NIRS and NIR Microscopy to this topic.

Several papers on this topic have been published in JNIRS (and other scientific journals) in the last years (The teams, amongst other, of Ana Garrido (UCO) and Pierre Dardenne (CRA-W) are active in this area). In the last issue of JNIRS you have a paper dealing with the validation of a NIR imaging method (Pages 121�133, doi: 10.1255/jnirs.872 � In-house validation of a near infrared hyperspectral imaging method for detecting processed animal proteins in compound feed. Juan Antonio Fern�ndez Pierna, Pierre Dardenne and Vincent Baeten�

You can find also information on the website of two European Projects having a look to the potential of NIR techniques (NIRS, NIRM and NIR imaging).
- STRATFEED, http://stratfeed.cra.wallonie.be
- SAFEED-PAP, http://safeedpap.feedsafety.org

At Walloon Agricultural Research Centre, a NIRM and a NIR imaging is used since 2006 in the framework of the Community Reference Laboratory for Animal Proteins (www.crl.cra.wallonie.be) and is working under ISO17025 accreditation.

Recently in the framework of the Safeed-pap project an interlaboratory study has been organised for the NIRM method (This study included 8 labs).

If you send me ([email protected]) your mail address, I will send you more info issued from both European Projects.

Best regards from Belgium, Vincent
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David von Boisman (david_von_boisman)
Intermediate Member
Username: david_von_boisman

Post Number: 17
Registered: 2-2006
Posted on Wednesday, June 09, 2010 - 2:44 pm:   

Dear all,
I'm looking for references on the use of NIR reflectance for identification of animal products in feed and feed ingredients. Both on a scientific level, and as part of official feedstuff control.
Best regards, David von Boisman

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