The formation of fouling deposit from foods and food components is a severe problem in food processing and leads to frequent cleaning. The design of surfaces that resist fouling may decrease the need for cleaning and thus increase efficiency. Atomic force microscopy has been used to measure adhesion forces between stainless steel (SS) and fluoro-coated glass (FCG) microparticles and the model food deposits (i) whey protein (WPC), (ii) sweetened condensed milk, and (iii) caramel. Measurements were performed over a range of processing temperatures between 30 and 90 degrees C and at contact times up to 60 s. There is a significant increase in adhesion force of both types of microparticle to WPC at 90 degrees C for all contact times. For confectionary deposits adhesion to SS was similar. Adhesion of confectionary deposits to FCG at 30 degrees C revealed a decrease in adhesion compared to SS; at higher temperatures the adhesion forces were similar. (C) 2013 Elsevier Ltd. All rights reserved.