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Abstract
Abstract The requirements for general and hygienic cleanliness are steadily increasing. Therefore the textiles used in food industry as well as in other hygienically demanding areas have to fulfil certain hygiene standards. The assurance of these microbiological quality is of increasing significance. National and international standards, guidelines as well as laws in some European countries ask for a professional reprocessing and advise clearly against washing the laundry in households. In commercial laundries the implementation of EN 14065 (Laundry Processed Textiles – Risk Analysis and Biocontamination Control System) (RABC system) ensures a defined microbiological quality of processed textiles. EN 14065 is published as a European standard and offers a powerful technique to perform a risk analysis and with it achieve any constant microbiological quality of expedition textiles. However, it does not contain any microbiological limits. This paper focuses on microbiological limits and hygiene instructions in laundry processes to fulfil the requirements of hygienically demanding areas such as food industry. Therefore hundreds of microbiological samples were taken at relevant process steps in nine laundries before and after installation of the RABC system. Samples were taken from wet and dry textiles, textile close surfaces and the interior of hands of the employees. Additionally water samples were analysed and the disinfection effect of washing procedures was investigated with biomonitors containing Staphylococcus aureus and Enterococcus faecium. The results show that the RABC system can constantly improve and guarantee the hygienic quality of the expedition textiles. Laundries with RABC system can easily fulfil the needs of hygienically demanding areas like food industry. Limit and/or orientation values for almost all relevant process steps as well as recommendations for sampling are set up.
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