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The establishment of EVISA is funded by the EU through the Fifth Framework Programme (G7RT- CT- 2002- 05112).


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New CRM for Selenomethionine in yeast developed by NRC Canada is now on the market

(02.08.2005)


Mineral supplementation represents a sizeable portion of the multibillion dollar nutritional supplement / functional food / animal feed business.  Many of the supplemented metals are added as metal enriched yeast (i.e., Zn, Cr, Se) to the final formulation. However, there are currently no Certified Reference Materials available for quality control of measurements characterizing these supplements.  In the case of Se enriched yeast, the question of the quality of the product is even more difficult because most of the Se present is covalently bound to carbon, forming the non-canonical amino acid selenomethionine.  Most of the functionality claims for Se enriched yeast are related to its SeMet content.
 
 
Selenium Enriched Yeast Certified
Reference Material: SELM-1
 
  CERTIFIED VALUES SELM-1
(milligram/kilogram) 
Total Selenium   2059 ±  64
Selenomethionine  3431 ± 157
Methionine  5758 ± 277
* certification valid until Nov. 2006
 
 
It is intended that the expanded uncertainty UCRM  encompasses every aspect that reasonably contributes to the uncertainty of the measurand (e.g. measurement uncertainty, homogeneity, stability). A coverage factor of 2 was applied.
 
For more information about the material please contact

Dr. R.E. Sturgeon
National Research Council of Canada
Institute for National Measurement Standards
M-12, 1500 Montreal Road
Ottawa, Ontario, Canada K1A 0R6
Telephone (613) 993-2359
Facsimile (613) 993-2451
E-mail:  crm.inms@nrc-cnrc.gc.ca

or visit the website at
http://inms-ienm.nrc-cnrc.gc.ca/en/calserv/chemical_metrology_e.php

 









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