Freeze- Drying of Carrot Slices in Diverse Thicknesses

Abstract

In this paper we dried carrots by the method of freeze-drying. The carrots had cut in slices; then divided in halves. The mass looses of samples sized. The mass losses measured and recorded during the process. The sections were in 5 mm and 7 mm. Slices were dried with SCANVAC COOLSAFE. Weights of the carrot slices differed also in each unit with the same weight and shape varied. Our team did the drying procedures every two hours, also the experiment applied by different temperatures. While evaluating the amount of carrot slices as samples for freeze-dried observed that, dried samples amount were 5 times less than the amount of carrots before drying. The procedure applied with 10 different mathematical models using the MATLAB program. The error analysis of the models at the result v made by using the estimated standard error (RMSE), chi-square (X2) and regression coefficients (R2). According to the results, it determined that the results of the Page model were closer as the experimental results by compared to other models. The statistical error values of samples for R2, RMSE respectively were 0.018565707 for 5 mm and 0.019532936 for 7 mm.

Keywords

• Freeze drying
• vegetable drying
• kinetic drying mode

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