Revidert: 05 desember 2011 .

		Siste NMKL-nytt (nr. 79 desember 2011) (se også tidligere NMKL-nytt)
Aktuelt og nyheter
		NMKL Protocol No 5, 2011 (English) Analytical Quality Control - Guidelines for the publication of analytical results of chemical analyses in foodstuffs Check-list for analytical quality control (AQC) criteria (Word-file)
		AOAC Europe - NMKL Symposium 2012 AOAC Europe og NMKL samarbeider om å arrangere et symposium  7. - 8. mai 2012 i København: International symposium on rapid chemical, microbiological and sensory methods for analysis of foods. Vi inviterer til aktiv deltakelse og ønsker abstracts på relevante emner innen 10. desember.
		NMKL-nytt nr. 78 juni 2011

	Tidligere NMKL-nytt:
	Nr./år
	78 2011
	77 2011
	76 2010
	75 2010
	74 2010
	73 2009
	72 2009
	71 2009
	70 2008
	69 2008
	68 2008
	67 2007
	66 2007
	65 2007
	64 2007
	63 2006
	62 2006
	61 2006
	60 2005
	59 2005
	58 2005
	57 2004
	56 2004
	55 2004
	54 2003
	53 2003
	52 2003
	51 2002

This year alarming news circulated in the public domain that world-wide the production of cycloheximide is stopped. A non-availability of cycloheximide would have affected Listeria Enrichment broth (LEB),  Buffered LEB , Oxford agar and Legionella media.
Standardisation bodies (ISO, NORVAL, AFNOR, FDA, USDA-FSIS) have been alerted and requested to change standards, such as, ISO 11290  part 1 and 2 ,  IDF 143, FDA BAM.

Fortunately, Cycloheximide is again produced and can again be purchased,  for example, at Calbiochem.

There is no need to re-formulate supplements due to non availability of cycloheximide.

There is no need to change protocols, standards  and start an expensive validation procedure.

There is no need, as is done by culture media manufacturers, to replace cycloheximide by amphotericin B  (toxicity class Xn+)  or natamycin (also known as pimafucin, or pimaricin). The different formulations that recently became available  do not contribute to the standardisation of methods.

In the next weeks all cycloheximide containing culture media and supplements will again be available from Merck.

Kind Regards
Dr Peter van Netten