Ansar, A (2021) Using of Exhaust Gas Heat from a Condenser to Increase the vacuum Freeze-Drying Rate. Results in Engineering, 13 (1). p. 100317. ISSN 2590-1230
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Abstract
Vacuum freeze dryer is able to remove some of the moisture content of the material. However, the drying rate is very slow because the sublimation process must propagate through the layers of material. Therefore, the aim of this study is to examine the use of exhaust gas heat from a condenser to increase the vacuum freeze-drying rate. Drying was carried out at freezing temperature of -55 ºC and the drying time was 7 hours. The research parameters observed were water losses, water content, texture, color, weight losses, and total soluble solids. The results showed that the exhaust gas heat in a vacuum freeze dryer can be used to optimize the water sublimation process. As a result, the drying process will be faster. The exhaust gas heat has a significantly effect on changes in water losses, moisture content, texture, weight losses, and total soluble solids, but does not significantly effect on the sample color. The drying system in the exhaust gas heat (EGH) method was more efficient because the final moisture content of the sample was 9.45% lower than the vacuum freeze dryer (VFD) method, which was 15.95%.
| Item Type: | Article |
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| Keywords (Kata Kunci): | Color losses; Moisture content; Quality parameters; Total soluble solids; Water losses |
| Subjects: | T Technology > TS Manufactures |
| Divisions: | Fakultas Teknologi Pangan dan Agroindustri |
| Depositing User: | DR. ANSAR,S.Pd.,M.P.,M.Pd Fatepa |
| Date Deposited: | 24 May 2022 23:47 |
| Last Modified: | 24 May 2022 23:47 |
| URI: | http://eprints.unram.ac.id/id/eprint/28857 |
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