

Some countries are taking full advantage of the new limitless system in the EU, with Ireland, Luxemburg, and Belgium increasing bi-monthly milk deliveries to dairies by in excess of 20% ( Eurostat, 2016). The European Union’s removal of milk quotas in April, 2015 led to a 2% increase in milk deliveries to dairies in the EU for 2015. It is anticipated that the optimization and application of these methods in appropriate ways can ensure that the enhanced pressures associated with increased production will not result in any lessening of safety and quality standards. The various advantages and limitations with respect to the application of these diagnostics approaches for dairy food will be provided. The following review will explore the common spore-forming bacterial contaminants of milk powders, will review the guidelines with respect to the acceptable limits of these microorganisms and will provide an insight into recent advances in methods for detecting these microbes.

Traditional microbiological detection methods used in industry have limitations in terms of time, efficiency, accuracy, and sensitivity. A particular emphasis on spore-forming bacteria is necessary due to their inherent ability to survive extreme processing conditions. To ensure quality and safety standards in the dairy sector, strict controls are in place with respect to the acceptable quantity and species of microorganisms present in these products. These powders are used in a wide variety of products, including confectionery, infant formula, sports dietary supplements and supplements for health recovery. Unsurprisingly, there has been a corresponding increased focus on the production of dried milk products for improved shelf life. Milk production has also increased outside of Europe in the past number of years. With the abolition of milk quotas in the European Union in 2015, several member states including Ireland, Luxembourg, and Belgium have seen year on year bi-monthly milk deliveries to dairies increase by up to 35%.
