Multiphase drying of hull-less pumpkin kernels (Cucurbita pepo L.) | Visefazno susenje zrna uljne tikve (Cucurbita pepo L.)
2010
Martinov, M., Fakultet tehnickih nauka, Novi Sad (Serbia) | Golub, M., Fakultet tehnickih nauka, Novi Sad (Serbia) | Bojic, S., Fakultet tehnickih nauka, Novi Sad (Serbia) | Veselinov, B., Fakultet tehnickih nauka, Novi Sad (Serbia) | Matavulj, M., Prirodno-matematicki fakultet, Novi Sad (Serbia)
The objective of this investigation was to improve the drying of hull-less pumpkin kernels with the aim to reduce the fuel consumption and provide good quality. Three multiphase drying procedures were performed, with different agent temperatures. The first phase, reduction of moisture content down to 32%, was performed in open mode. The second phase, conducted with lower agent temperature, was performed for the reduction of moisture content down to approximately 18%, while the third phase lasted until the end of drying. For the second and third phases open and circulation modes were applied, changed in accordance with current relative humidity of drying agent. As a control group, the drying with constant temperature of agent, 50 deg C, and open mode through all phases (typical of usual practice) were applied. The specific drying duration was calculated; as well as the specific drying energy and specific energy for phases. The changes of share of free fat acids, as well as the number of microorganisms in dried kernels, have been analyzed.
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