FOOD & DRINK TECHNOLOGY 33


Given Fat


Content %


16.1 15.79 15.80 15.80 15.81 15.82 15.81 15.82 Table 2 illustrates the repeatability test results, which were well within the desired range.


She adds: “Te company achieved a return on investment (ROI) within five months of purchasing the instrument.”


Te purchase of the NMR MQC instrument allowed the laboratory to replace four of its Soxhlet units. Tis significantly reduced the cost of purchase and disposal of solvents, increased available laboratory space, reduced running costs, achieved environmental benefits associated with reduced solvent usage, and facilitated better deployment of laboratory staff.


Since there is a slight calibration drift over about six months to a


year, the laboratory will still need to recalibrate periodically against the primary technique or with set-up samples supplied by Oxford Instruments.


During installation, set-up samples can be made to physically capture and maintain the original calibration, saving time during instrument recalibration. Tey also save time by allowing calibrations to be transferred to other similarly configured Oxford MQC NMR instruments.


While not required by most potential users of NMR instruments, this particular contract lab chose to


get its new fat measurement method accredited by the United Kingdom Accreditation Service (UKAS); the national accreditation body that uses a set of internationally agreed standards to assess organizations that provide certification, testing, inspection, and calibration services.


Te lab developed a universal method using a sample blending process, sample conditioning to ensure the optimal temperature for reading by the temperature-sensitive NMR signal, followed by analysis using the MQC instrument. Tey used hundreds of data samples from Soxhlet and NMR-MQC to prove they were getting similar results


within a degree of tolerance. Tis method has been UKAS-validated and fully accredited since 2009.


Fat content NMR provides a fast and reliable method to increase throughput for quality control testing of fat content in foodstuffs. Although past history may have placed the venerable Soxhlet solvent extraction technique in the role of industry standard, for those seeking to eliminate quality control bottlenecks, the MQC NMR analyser is poised to take over the lead.


Oxford Instruments is based in Abingdon, Oxfordshire, UK. www.oxinst.com


15.82 15.83 15.81


Table 2 – Results of instrument repeatability test Results (%) of Repeat NMR Measurements


Mean Value %


15.81


Standard Deviation %


0.01


Natural products for individual solutions


We‘re happy to assist food processors in developing their optimum products in terms of nutrition, functionality and sustainability.


Reduction of SAFA and TFA Balancing of Omega-3/-6/-9 High Oleic Rape and Sunfl ower Oils


Walter Rau


Neusser Öl und Fett AG Industriestraße 36-40 D-41460 Neuss


Tel.: +49 (0) 21 31/208–0 Fax:+49 (0) 21 31/208–211 E-Mail: info@WalterRauAG.de Internet: www.WalterRauAG.de


Circle 33 or ✔ at www.scientistlive.com/eurolab


For more information visit our website: www.WalterRauAG.de


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