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Diskresultat i relation till diskmaskiners renhet: En kvantitativ studie genomförd med ATP-mätare i Örebro kommun
Umeå University, Faculty of Social Sciences, Department of Food and Nutrition.
2013 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesisAlternative title
Washing-up result in relation to the cleanliness of the dishwashers : A quantitative study made with a luminometer at restaurants in the county of Örebro (Swedish)
Abstract [sv]

BAKGRUND Under sommaren 2013 lyftes en fråga i Europa om det fanns ett behov av en standard för kommersiella diskmaskiner. Svenska aktörer, exempelvis Svensk dagligvaruhandel, kontrollmyndigheter och Sveriges Kommuner och Landsting, svarade ja. Tidigare forskning har tytt på att otillräckligt rena diskmaskiner kan påverka diskresultatet och att smutsiga ytor kan förorena livsmedel och leda till matförgiftning.

SYFTE Att studera diskmaskiners renhet och om detta hade något samband med renheten på diskgodset.

METOD Tio restauranger i Örebro kommun valdes ut genom ett bekvämlighetsurval. Diskmaskiner kontrollerades med utgångspunkt från en frågeguide och diskgods testades med ATP-mätare. För att analysera resultaten användes pivottabeller i Microsoft Excel och samband signifikanstestades med Chi2-test.

RESULTAT Av tio kontrollerade diskmaskiner bedömdes åtta som smutsiga. Drygt hälften av det testade diskgodset fick godkänt, en liten del fick godkänt med anmärkning och cirka en tredjedel fick underkänt. Det diskgods som var smutsigt hade i större utsträckning diskats i smutsiga maskiner. Sambandet mellan olika rengöringsbrister i maskinerna och diskresultat testades, men signifikant samband konstaterades bara mellan förekomst av rödmögel och smutsigt diskgods. Inga tydliga samband sågs med andra variabler kopplade till diskhanteringen.

SLUTSATS Diskgods som för ögat ser rent ut är inte alltid det. Det är en fördel om diskmaskinen rengörs ordentligt, men det finns också visst stöd för att rengöring av området runt omkring maskinen, samt hantering, förvaring och slitage har inverkan på diskgodsets renhet. Att diskutera diskhantering vid kontrollbesök kan leda till att ett viktigt område som ibland hamnar i skymundan uppmärksammas.

Abstract [en]

BACKGROUND A question regarding the need of a standard for commercial dishwashers was raised in Europe during the summer of 2013. Actors in Sweden said yes. Earlier studies has implied that dirty dishwashers could affect the cleanliness of wash ware and that dirty surfaces could contaminate food and lead to food poisoning.

OBJECTIVE The aim of this study was to examine the cleanliness of dishwashers and to see if it had some link to the cleanliness of the wash ware.

METHOD Food inspections were made at ten restaurants which were selected through a convenience selection.The dishwashers were checked with a study protokol and wash ware were tested with a luminometer. The results were analysed in Microsoft Excel and possible links were tried statistically with Chi2-tests.

RESULTS Eight out of ten dishwashers were dirty. A little more than half of the tested wash ware were clean, a few articles were approved with a mark and about a third were dirty. The dirty wash ware were more often washed in a dirty dishwasher. The links between faults in the dishwashers and the ATP-results of the washed goods were tested, but a significant link were only found between red mould and dirty wash ware. For other factors that could affect the cleanliness of the wash ware, no clear links  were to be seen.

CONCLUSION Wash ware that seems to be clean aren’t always clean enough. It’s good to keep the dishwasher clean, but there is also some support for that keeping the area around the dishwasher clean, handle and store the wash ware in a appropriate way and to be using wash ware in a good condition impacts the washing-up result. Highlighting the wash routine can lead to more attention to an area that otherwise might tend to be a little bit forgotten.

Place, publisher, year, edition, pages
2013.
Keyword [sv]
Disk, Diskmaskiner, Diskresultat, ATP-mätare
National Category
Food Science
Identifiers
URN: urn:nbn:se:umu:diva-83405OAI: oai:DiVA.org:umu-83405DiVA: diva2:666746
Subject / course
Uppsats i kostvetenskap
Educational program
Food and nutrition programme
Available from: 2013-11-26 Created: 2013-11-24 Last updated: 2013-11-26Bibliographically approved

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