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THE EFFECT OF DRYING WITH CONTROLLING RELATIVE HUMIDITY OF DRYING AIR ON THE COLOR AND TEXTURE OF MANGO SHEET PRODUCTS |
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| รหัสดีโอไอ | |
| Title | THE EFFECT OF DRYING WITH CONTROLLING RELATIVE HUMIDITY OF DRYING AIR ON THE COLOR AND TEXTURE OF MANGO SHEET PRODUCTS |
| Creator | WEERACHET JITTANIT |
| Contributor | KWANCHANOK PRAPHUNCHONAKORN |
| Publisher | Faculty of Technology, Mahasarakham University |
| Publication Year | 2563 |
| Keyword | Drying, Heat pump, Hot air drying, Mango sheet, Relative humidity control |
| Abstract | Mango sheet is one of the traditional mango products that is produced for preservation and market-value addition purposes. Currently, the factory encounters the problem about the long drying time requirement of this product. Therefore, this research aimed to increase the efficiency of drying mango sheets by proposing the hot air drying method that controlled the relative humidity (RH) of drying air. In this study, three drying schemes namely conventional hot air drying (60 ?C), single-stage drying (60 ?C/15% RH), and two-stage drying (80 ?C for 1 h 5 min in the 1st stage and then adjusted to 60 ?C/15% RH in the 2nd stage) were applied in the mango sheet drying until reaching the moisture content of approximately 16.8% wet basis (w.b.) which is comparable to the commercial product. The color and textural properties, consisting of firmness and adhesiveness of mango sheets dried by these methods were determined and compared with those of the commercial product. It appeared that all of the drying schemes required shorter drying time than that of the current practice in the factory, especially when the relative humidity of drying air was controlled. The color intensity of the sample dried by conventional hot air drying product was the lowest, followed by the two-stage, and single-stage drying respectively whereas all the color values of commercial product was greater than its counterparts. In addition, the firmness and adhesiveness of conventionally-dried samples were higher than the two-stage dried sample, commercial product, and single-stage dried mango sheets respectively. This research proved that the drying process that applied the relative humidity control which is the similar concept to the heat pump dryer could noticeably shorten the drying time compared to the general hot air drying methods while its product quality was not much different from the commercial product. |
| Language | EN |
| URL Website | https://techno2.msu.ac.th/icofab/welcome/ |
| Website title | The 7th International Conference on Food Agriculture & Biotechnology(ICoFAB 2020) |
