Applications for Plants and Surface Cleaning
Enzymatic treatments in cleaning dairy plants are used both in cleaning-in-place (CIP) and cleaning-out-of-place (COP) procedures, as an alternative to or in association with caustic detergent solutions. Use of enzymes has several advantages such as decreased energy and water consumption, improved safety, reduced waste generation, and compatibility with wastewaters treatment processes (Boyce et al., 2010). On the other hand, a main disadvantage is the high cost.
Currently, the main applications of enzymes in CIP procedures regard cleaning of milk pasteurizers and membrane-filtration plants. As to the COP procedures, a number of operations can contemplate enzymatic treatments such as sanitation of water pipes, drains, and surfaces that are hidden or hard to reach. In all of these applications, enzymes play a fundamental role in removing bacterial biofilms: Due to heterogeneity of the extracellular polysaccharides in the biofilm, a mix of enzymes is necessary (Augustin & Ali-Vehmas, 2004).