Journal of Food Processing and Preservation · 1989 · 37 citations · 7 references
AgricultureFood ScienceMicrobiologyAseptic ProcessingFood EngineeringHeat TransferAseptic PackagingFood Safety In ProcessingHeat Transfer In FoodsNonthermal ProcessingSterilization ValidationThermal ProcessingAseptic Processing ValidationHeat Exchanger EffectivenessHeat Transfer In PackagingPackaging Material SterilizationParticle Residence TimeSterilization In Food ProcessingSwept Surface DesignThermal Process Modeling
A biological procedure was devised to evaluate de Ruyter and Brunet's heat transfer computer simulation for sterilizing particulate foods in a swept surface heat exchanger (SSHE). Turkey cubes measuring 12.7 mm were inoculated with spores of Clostridium sporogenes PA3679, using a so-called “knotted string” method. Inoculated cubes were introduced into a viscous starch medium and thermally processed in a SSHE to a fractional survivor endpoint. Processed product was packaged aseptically, incubated and examined for survivors. Biological sterilization values calculated from the inoculated packs support the validity of the simulation. Also, a novel method was devised to measure particle residence times in hold tubes using electro-magnetic induction.
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