FOOD & DRINK TECHNOLOGY 33
the technological capabilities to successfully execute our residue test methods, which ultimately help protect the global food supply.”
“Leading food testing companies, such as Eurofins, choose to work with AB SCIEX because of our deep knowledge base in analysing complex food samples and developing next-generation, food contaminant testing solutions,” noted Vincent Paez, senior director of food and environmental business with AB SCIEX. “Given the challenges of the difficult matrix that animal feeds present, we are utilising the power of advanced technologies, including QTRAP LC/MS/MS technology, to assist in producing high-quality, reliable results,” he added.
Water purity Located in Goole, England, Britannia Foods Ingredients was formed in 1966 and today produces a range of speciality fats for the chocolate, confectionery, biscuit and snack food industries. Like all manufacturing companies, Britannia Foods must comply with strict regulations to ensure that trade effluent entering the public sewerage system is pre-monitored to ensure it does not contain any harmful chemical levels.
Te company’s trade effluent is handled by Yorkshire Water, who issue consents relating to factors including the rate and maximum volume of the discharge, the
temperature of the discharge and where the discharge may be made.
In order to comply with its trade effluent consent and ensure protection of human health, Britannia Food Ingredients selected Analytical Technology’s Q45P AutoClean pH monitors and D15-76 monitor with an Air Blast AutoClean system to indicate water quality and the presence of suspended solids in its waste water stream.
Te D15-76 monitor has enabled the company to realise turbidity measurements down to 0.001 Nephlometric turbidity units (NTU) and as high as 4000 NTU, eliminating the need for separate high and low ranges.
“Te monitors have enabled us to comply with the stringent trade effluent consent criteria outlined by Yorkshire Water, providing reliability and giving us peace of mind that our effluent will not negatively impact upon the environment or the sewerage system,” said Britannia Food Ingredients operations manager Richard Stockdale.
Meanwhile Bruker has released an application note detailing the development for analysis of microcystins in drinking water, by direct injection on the recently- introduced EVOQ Elite liquid chromatography mass spectrometer triple quadrupole (LC-MS/MS).
Microcystins (MCs) are cyclic heptapeptides produced by cyanobacteria in lakes and reservoirs that experience seasonal algal bloom. MCs are toxic to animals and humans, with widespread adoption of the World Health Organisation’s (WHO) guidelines of 1µg/l in drinking water.
Using the EVOQ Elite LC-MS, Bruker has developed the method for the detection and quantification of three common MCs (MC-LR, -YR, -RR) in drinking water to ensure its safety (Fig. 1).
Te application note is available to download at http://bit.ly/BCA456
Te application note explores the high sensitivity of the EVOQ Elite LC-MS/MS, in detecting parts per billion (ppb) concentrations of MCs. Water containing three common cyanobacterial toxins was directly injected into the EVOQ.
Te MCs were examined over three orders of dynamic range, from 50 ppb to 0.05 ppb. Te EVOQ proved sensitive to detect 0.00 ppb of MCs with good repeatability of <10 per cent relative standard deviation (RSD), far exceeding the guideline set by the WHO of 1µ/l, demonstrating that the EVOQ Elite can easily be utilised to ensure safe levels of MCs in drinking water.
Bruker marketing director Spectrometer to measure the nitrogen content in grain A
nalytik, a leading supplier of innovative analytical solutions to the UK and Ireland, has reported success following use of the AgriSpec
portable near-infrared (NIR) spectrometer from ASD at Rothamsted Research, the longest running agricultural research station in the world. The spectrometer is used for nitrogen measurements in grain. Andrew Riche has worked at Rothamsted since
1994 on the agronomy and physiology of arable crops. His current research is focused on wheat pre-breeding research, studying a diverse range of germplasm and looking particularly at improving nitrogen and
phosphorus use efficiency. One of his routine tasks is to measure the amount of
nitrogen in grain. Such measurements were performed with a combustion analyser but with increasing workloads and extended time for sample preparation being required, a new solution was required. This is driven by the changing research goals. Riche explained: “Our research is into wheat
nutrition, particularly nitrogen use efficiency. “We have recently expanded the field trials work
to around 7000 plots/year generating around 14,000 plant samples (grain plus straw) which require nitrogen
analysis. With so many samples, we were looking for a cheaper and quicker method of analysis.” He added: “We chose the AgriSpec for a number of
reasons. I like its robustness – much of our work is done in a lab. It is not a typical lab. We have thousands of relatively large samples, with associated dust and other contaminants.” Riche concluded: “The range of attachments for
the AgriSpec is good. By using the sample turntable, we can easily and rapidly estimate grain nitrogen content without having to mill the samples - saving a lot of time.”
“The use of certain antimicrobials has been banned in food producing animals in many countries and maximum residue limits (MRLs) have been set in order to monitor antimicrobial usage.”
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