Abstract
In this paper, the treatment with cold atmospheric plasma (CAP) is considered as a preparatory stage before the onion drying process to control quality parameters. CAP processing was performed on an industrial installation at an electric field strength of 6 kV/cm, using unipolar rectangular pulses with a duration of 100 microseconds and a repetition frequency of 100 Hz. The index of disintegration of plant cell membranes was used as a method for evaluating the effectiveness of CAP exposure. As a result of consideration of a twofactor experiment 32 with a variation in the thickness of onion slicing and the number of pulses per unit area, it was possible to reduce the duration of the drying process by 25–42 % compared to the experiment without processing and preserve the quality of the dried product. The solution of the parametric optimization problem made it possible to establish the range of optimal values for processing CAP for onions. The results obtained have the prospect of application in agro-industrial production for drying fruit and vegetable products.
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