Our newsletter is now in a new format
NMKL newsletter No. 104 of May 2021 is finally published. The newsletter in a new and modern format opens in your web browser by clicking the following hyperlink:
NMKL News No. 104
The certificate issued to DirectSens GmbH for LactoSens®R has been renewed from 7 March 2021. The method describes the use of a biosensor for determination of residual lactose in lactose-free milk/milk products.
Three certificates issued to Analytik in Milch Produktions- and Vertriebs- GmbH, Germany, have been renewed from March 2021. The methods describe Brilliant Black Reduction tests in microtiter plates for detection of anti-microbial agents in bovine milk.
The certificate issued to HyServe for Compact Dry ETC has been renewed 15 Feb 2021. The method describes ready-to-use dry media sheets for determination of Enterococcus in a broad range of foods and in water products.
The certificate issued to Aidian for Hygicult®TPC has been renewed from Feb 2021. Hygicult® TPC slides are intended for rapid monitoring of microbiological hygiene in different types of materials - contact plates and swabs.
17. Dec 2020
Unfortunately, NMKL has decided to withdraw the method “NMKL 67, 7th Ed. 2020 Bacillus cereus group”. We urge customers to use the 6th Ed. until the 7th Ed. has been revised and re-published early 2021.
NMKL acknowledges that a clarification concerning reporting results as ‘Bacillus cereus group’ is needed and that there are discrepancies between the Norwegian/Scandinavian and the English text. If the 7th Ed. has already been applied, please express results as ‘presumptive Bacillus cereus’. There are no known issues with technical performance of the method.
We sincerely apologize for the inconvenience and thank our observant customers for constructive feedback.
NMKL participated in the Codex Committee on Methods of Analysis and Sampling (CCMAS) webinar series November 23-25 and our presentation is now available.
The standardized analytical method for folate in food has traditionally utilized quantification by a microbiological assay, a method that cannot distinguish between the different folate vitamers. This new NMKL method enables quantification of total folate based on quantification of six folate vitamers which contribute to the main folate activity. Besides providing the information about the content of the specific folate vitamers, the method includes fast extraction of folates from food that may be carried out within eight hours.
The essential part of the method is using a pure γ-glutamyl hydrolase, which enables efficient and fast break-down of the polyglutamates to monoglutamates. LC-ESI-MS/MS quantifies monoglutamates by use of 13C5-labelled internal standards.
A collaborative study was conducted in summer 2019 with participation of eight laboratories from seven European countries. The method has been successfully validated for total folate determination in strawberries, spinach, lentils, yogurt, liver and infant formula, providing acceptable Horwitz ratio values (0.60-1.94). The results are published in Food Chemistry (Ložnjak Švarc, P; Oveland, E; Strandler, HS; Kariluoto, S; Campos-Giménez, E; Ivarsen, E; Malaviole, I; Motta, C; Rychlik, M; Striegel, L; Jakobsen, J (2020): Collaborative study: Quantification of total folate in food using an efficient single-enzyme extaction combined with LC-MS/MS. Food Chemistry, 333, 127447).
We are happy to announce that the 8th edition of NMKL method No. 67 now has been published. In the 8th edition, the title of the method is changed back to “Presumptive Bacillus cereus. Determination in foods.”, and errors from the 7th edition are corrected. In the 8th edition, it is still possible to use blood agar in parallel with selective agar, especially, when low counts are expected.
The Regulation (EC) No 882/2004 has been replaced by the Regulation (EU) 2017/625. Thus, NMKL has revised the Nordic standard document from 2009 for a Nordic interpretation of the Control Regulation regarding National Reference Laboratories and Official Laboratories. Please cite NMKL when referring to the revised document which is freely available here:
Purchasing publications from NMKL is now easier and more efficient:
Please consult our price list for prices and payment terms.
Nov. 2, 2020
As of 1st November 2020, the general secretariat of NMKL has moved from the Technical University of Denmark to the Institute of Marine Research in Norway. We would like to thank the former secretary general Nina Skall Nielsen and the former secretary Kirsten Becker Hansen for their great efforts during these past four years. The new secretary general is Eystein Oveland and the new secretary is Susanna Marie Petrova. We are currently working on updating all contact information on the website, and we thank you for your understanding as it takes some time to get everything in order.
Please note that the prices listed as "kr" on the website refer to DKK. We are currently working on clarifying any ambiguities around the currencies in the webshop. Please consult the price list for prices and updated payment terms.
The guidelines in NMKL procedure No. 19 provide several different procedures, which may be applied in the sensory evaluation of food packaging, and point out critical aspects and potential pitfalls of this work. The procedure focuses mainly on the sensory aspects of packaged foods relating to odour and taste evaluation, and consequently does not deal with issues such as the design and practical usability of the packaging. The field of application is wide and covers issues such as continuous production control of incoming materials, evaluation of storage conditions for packaged goods, and controls to ensure compliance with applicable rules and regulations.
The main change in this new version of the procedure is an update of the list of references. In addition, minor editorial corrections are made on the main content.