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Temperature Profiles Within Milk after Heating in a Continuous‐flow Tubular Microwave System Operating at 915 MHz
Author(s) -
Coronel P.,
Simunovic J.,
Sandeep K.P.
Publication year - 2003
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.2003.tb07004.x
Subject(s) - laminar flow , microwave , analytical chemistry (journal) , volumetric flow rate , continuous flow , microwave power , materials science , tube (container) , flow (mathematics) , microwave heating , chemistry , mechanics , chromatography , composite material , physics , quantum mechanics
Milk with different fat contents (0, 1, 2, 4%, and chocolate milk) were heated in a specially designed continuous‐flow microwave applicator operating at 915 MHz. The nominal power was 5 kW and the flow rates were 2.0 and 3.0 L/min to attain laminar flow. Temperature profiles at the exit of the applicator were measured. The results showed that the average increases in temperature were similar to one another, being 42 °C at 2.0 L/ min and 29 °C at 3.0 L/min. Differences between the lowest and highest temperatures were 3.7 and 3.0 °C, respectively. The temperature profiles illustrated that slightly higher temperatures were achieved within segments flowing close to the center of the tube.