FOOD. Science. Technology. Quality

Food. SCIENCE. Technology. Quality

Food. Science. TECHNOLOGY. Quality

Food. Science. Technology. QUALITY

Authors

ANDRZEJ LENART, DARIUSZ PIOTROWSKI, CEZARY BERNAT

Title

Physical properties of convectionally dried carrot under variable air temperature

Abstract

During drying in a cabinet drier step changes and rectangle pulses for the temperature +/-20°C from the reference level 70°C were introduced. The following physical properties of dried carrot were determined: density, shrinkage, rehydration, compressive force after rehydration of a sample, and leakage. Decreasing for one hour the drying temperature from 70°C to 50°C resulted in dried carrot with lower density, comparable final shrinkage, various levels of rehydration, and slightly higher leakage. Increasing for one hour the drying temperature from 70°C to 90°C resulted in dried carrot with higher density, comparable final shrinkage, lower rehydration, lower leakage than carrot dried at constant temperature 70°C.

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