Richard Dempster - Articles and news items
Issue 4 2009 • 12 December 2009 • Richard Dempster, Director, Product and Technological Development, AIB International
Often, we get in the habit of accepting numbers from computerised displays without regard to accuracy or precision, and when we do evaluate a number, we often look at how precise it is. We forget that we can be very precisely wrong. We don’t really pay close attention to numbers from our bank’s ATM, a gas pump or a near infrared instrument unless we think they are substantially wrong. We certainly pay closer attention to our bank account but tend to accept numbers from other devices that may have greater monetary importance and higher error rates. In this article, I will give a brief overview of the main sources of error specifically associated with near infrared (NIR) instruments and what effect these errors have on the number displayed. The overall goal is to interpret the numbers correctly. In this article, I use NIR as a general term to include both reflective and transmission instruments.
Near Infrared Reflection (NIR) is an established and valid measurement method for many specific compounds, (moisture, protein, fat, etc.) within the food industry. Recently, two ideas have emerged from the American Institute of Baking (AIB). The first is to use NIR to monitor processes and the second is to use NIR to predict the performance of flour in the bakery. This article will focus on how AIB is developing an NIR prototype to follow and/or predict dough development.
ABF Ingredients ANDEROL EUROPE BV Armfield Ltd Avantes Berndorf Band GmbH BIOTECON Diagnostics GmbH Cargo Oil AB Elea GmbH Engilico FUCHS LUBRITECH GmbH GLOBALG.A.P. Foodplus GmbH InS Services (UK) Ltd IONICON Analytik GmbH JAX INC. JBT Corporation LUBRIPLATE Lubricants Company NETZSCH Pumpen & Systeme GmbH NSF International Ocean Optics PCE Instruments UK Ltd R-Biopharm Rhone Ltd Randox Food Diagnostics Stancold SteriBeam The Tintometer® Group TOMRA Sorting Food Uhde High Pressure Technologies GmbH Verder UK Ltd Verner Wheelock Vikan UK Ltd