Handbook of Hygiene Control in the Food Industry

17.5 Microbial growthin pipingsystems Mostof the product will remain withinthe systemfor a shortertimethanthat needed for the mi ...

couldoccurare the preheating sections of heatexchangersfor pasteurisation of products.In the pre-heatingsectionveryfavourablegro ...

17.7 References CURIELG J, HAUSERG, PESCHEL P, TIMPERLEY D A, `Hygienicequipmentdesign criteria',Trendsin FoodScience& Tech ...

18.1 Introduction: types of pump used in food processing In automated food processing technology, pumps are used for the transpo ...

achieve the desiredsurface roughness. Depending on the specificspeednq, the wheel types are eitherslow-running radialwheels(nqà1 ...

Fig. 18.2 Openimpellerwithcompensationboresreducingthe axialthrust. Fig. 18.3 Axialforce-freeimpeller. Improving the hygienic de ...

18.2.2 Mechanical seals Mechanical seals have replaced the stuffing boxused so far in the food technology.The design of the mech ...

Fig. 18.4 Pumpfillingand drainage:(a) tangentialspiralhousing,ventingOK, without drainage;(b) radialspiralhousing,ventingoptimal ...

18.3 Cleanability,surface finishand other requirements Cleanabilityof all parts in contact withproductin flow(CIP,cleaning-in-pl ...

20 min as a minimum.Duringsteamsterilisation, all product contactsurfaces shallreachthe requiredtemperatures. The dynamic sealss ...

18.6 Bibliography BOHL, W.,Stro»mungsmaschinen2. BerechnungundKonstruktion. 5 Aufl.Wu»rzburg, VogelVerlag1995. CentrifugalPumpLe ...

19.1 Introduction With an increasing need of better control systems for many food processes, interest has become focused towards ...

related to foodquality control, and havebeenwellcovered elsewhere(Kress- Rogers and Brimelow, 2001). Lookingat the heart of a se ...

physicalrobustness (also duringcommonperipheral services), no needfor skilledpersonneland cost effectiveness(e.g.capital costs, ...

are relativelylow costsfor the device itself,its maintenance, as wellas its easy handling. The disadvantagesare effects suchas s ...

of voltagenecessaryto keepa constantpresetdraincurrent,i.e. both,operating temperature as wellas metallayer thickness/kindof met ...

Conductingpolymers Conductingpolymers (CP)havea relativelylonghistoryas sensors; Bartlett and Ling-Chung(1989)describedthe measu ...

workingelectrode relativeto the referenceelectrode.A voltammetricdevicealso consistsof one or severalworkingelectrodesand a refe ...

classificationoptions.Further classifications are the wayof identification' and scaling ofbioelementintegration'. Advantagesof t ...

Table 19.3 Overview of advantages/disadvantages and application examples of the different biosensor types Advantages Disadvantag ...