MICROWAVE VACUUM ASSISTED DRYING OF GREEN PEAS USING HEAT PUMP AND FLUIDIZED BED
The aim of this work was to study microwave vacuum assisted drying (MVD) of green peas using fluidized bed and heat pump system.A comperative study of heat pump fluidized bed atmospheric freeze drying (HP FB AFD) and heat pump fluidized bed hot air convective drying (HP FB HACD) was conducted.The drying kinetics and quality of products were studied.The initial drying rates of green peas were 0.04 and 0.12 1/min for HP FB AFD and HP FB HACD,while for MVD and HACD they were 0.59 and 0.20 1/min,respectively.Due to low operational temperature,HP FB AFD preserved sample size with minimal shrinkage (20%) and did not entail the changes in starch granules.Furthermore,the multi-stage combined HP FB AFD+MVD caused small changes in color and created desirable porous inner structure of final products.Summarizing,HP FB AFD+MVD can be promising alternative technique for green peas processing.
green peas heat pump fluidized bed atmospheric freeze drying hot air convective drying microwave vacuum drying
M.Zielinska P.Zapotoczny O.Alves-Filho T.M.Eikevik W.Blaszczak
Department of Systems Engineering University of Warmia and Mazury in Olsztyn,ul.Heweliusza 14,10-718 Department of Energy and Process Engineering Norwegian University of Science and Technology(NTNU) Ko Division of Food Science,Institute of Animal Reproduction and Food Research,Polish Academy of Scienc
国际会议
The 18th International Drying Symposium Conference(第十八届国际干燥学术大会(IDS2012))
厦门
英文
1-8
2012-01-11（万方平台首次上网日期，不代表论文的发表时间）