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Pilot-scale investigation of effectiveness of evaporation of skim milk compared...
Carvalho, Antônio Fernandes de; Perrone, Ítalo Tuler; Silveira, Arlan Caldas Pereira; Fromont, Laurent; Méjean, Serge; Tanguy, Gaëlle; Jeantet, RomainAs evaporation is an energy-intensive process, it is important that evaporators operate efficiently at their maximum capacity. The aim of this study was to compare the effectiveness of a pilot-scale, single-stage falling-film evaporator in the evaporation of water and skim milk. The solutions were fed at a boiling temperature of 60 °C, and a mass flow rate of 50.0 ± 0.7 kg·h−1. There was no significant variatio...
Flow regime assessment in falling film evaporators using residence time distrib...
Silveira, Arlan Caldas Pereira; Tanguy, Gaëlle; Perrone, Ítalo Tuler; Jeantet, Romain; Ducept, Fabrice; Carvalho, Antônio Fernandes de; Schuck, PierreA falling film evaporator (FFE) is an industrial device to concentrate solutions. The aim of this study was to identify the flow regime, and characterize and model the residence time distribution (RTD) functions of a FFE. Experimental runs were carried out with skim milk at three different feed mass flow rates. Flow was characterized using experimental Reynolds number (Ref). The RTD function in the FFE was meas...
Ser2 from Serratia liquefaciens L53: A new heat stable protease able to destabi...
Baglinière, François; Tanguy, Gaëlle; Salgado, Rafael Locatelli; Jardin, Julien; Rousseau, Florence; Robert, Benoît; Harel-Oger, MarielleThe heat-stable protease Ser2 is secreted by the species Serratia liquefaciens, a psychrotrophic bacteria frequently found in raw milk. To understand the physicochemical modifications of casein micelles induced by Ser2 and to confirm its implication in UHT milk destabilization, the enzyme was purified and added to microfiltered raw milk before UHT treatment. UHT milk destabilization was investigated during 90 d...