Accession Number : ADA290816

Title :   Comparison of Equipment for Drying Foods.

Descriptive Note : Final rept. Jun-Jul 94,

Corporate Author : ARMY NATICK RESEARCH DEVELOPMENT AND ENGINEERING CENTER MA

Personal Author(s) : Langner, Markus ; Colhoun, Fred ; Mahorowala, Arpan ; Cohen, Joseph S. ; Hallberg, Linnea

PDF Url : ADA290816

Report Date : JAN 1995

Pagination or Media Count : 59

Abstract : This report deals with the comparison of equipment for drying peas. Dryers investigated were the ball dryer (BD), the centrifugal fluidized bed dryer (CF) and the microwave-augmented freeze dryer (MW). Peas dried in each unit were rehydrated and subjected to quality tests for color and texture. The MW gave the best quality peas. An economic comparison was also made. Calculation of fixed-capital, utility, operating and manufacturing costs were based on data from Sapakie and Renshaw (1984) and measurements made on the pilot scale equipment. The manufacturing costs of the CF peas were marginally less than that of the BD peas. The MW peas were about four times more expensive than the BD peas. A trade-off between quality and economics arises. Processing strategies to resolve this conflict are suggested. Operating conditions and equipment modifications are recommended for the pilot-scale equipment. -BKA

Descriptors :   *ECONOMIC IMPACT, *FLUIDIZED BED PROCESSES, *FREEZE DRIED FOODS, TEST AND EVALUATION, MANUFACTURING, COST ANALYSIS, COMPARISON, ARMY FACILITIES, MICROWAVE EQUIPMENT, FLOW RATE, TEMPERATURE GRADIENTS, MODEL TESTS, SAMPLING, QUALITY CONTROL, PILOT STUDIES, FOOD PRESERVATION, WEIGHT REDUCTION, MATERIALS RECOVERY, CENTRIFUGAL FIELDS, DRYING APPARATUS, FACTOR ANALYSIS, PEAS, CARROTS.

Subject Categories : Economics and Cost Analysis
      Food, Food Service and Nutrition
      Industrial Chemistry and Chemical Processing

Distribution Statement : APPROVED FOR PUBLIC RELEASE