Dehydration and Rehydration Characterization of Yam (Dioscorea Rotundata) Tuber Slices Using a Refractance WindowTM Dryer,
| dc.contributor.author | Akinola, A. A. | |
| dc.contributor.author | Shittu, A. S. | |
| dc.contributor.author | Ezeorah, S. N. | |
| dc.date.accessioned | 2019-09-16T13:26:56Z | |
| dc.date.available | 2019-09-16T13:26:56Z | |
| dc.date.issued | 2017 | |
| dc.description | Staff publications | en_US |
| dc.description.abstract | The effect of slice thickness on the dehydration and rehydration characteristics of yam was studied in a Refractance Window TM (RW) type dryer constructed from a laboratory water bath. Yam slices 1.5, 3.0 and 4.5 mm thick were dried in a laboratory scale RW dryer where the water in the bath was maintained at temperature of 80 °C. The initial moisture content of the yam samples was 69% on a wet basis (wb). The drying process was carried out until the final moisture content of the product was below 10% (wb). The experimental data indicate that the drying time decreases rapidly as the yam slices decrease; the 1.5 mm, 3.0 mm and 4.5 mm thick yam slices, dried to below 10% within 40 minutes, 80 minutes and 120 minutes respectively. The experimental data indicated that the drying kinetics for the yam slices fitted the Haghi and Ghanadzadeh thin-layer drying model with a regression coefficient exceeding 99.9 % for the 1.5, 3.0 and 4.5 mm thick slices. The rehydration ratio increased to a steady value of about 1.91 when soaked in water for about 180 minutes. | en_US |
| dc.identifier.citation | Akinola, A. A., Shittu A. S and Ezeorah, S. N., (2017), Dehydration and Rehydration Characterization of Yam (Dioscorea Rotundata) Tuber Slices Using a Refractance WindowTM Dryer, Zimbabwe Journal of Science & Technology, Vol.12, 75 - 87pp. | en_US |
| dc.identifier.issn | 2409-0360 | |
| dc.identifier.uri | https://ir.unilag.edu.ng/handle/123456789/5616 | |
| dc.language.iso | en | en_US |
| dc.publisher | Zimbabwe Journal of Science & Technology | en_US |
| dc.relation.ispartofseries | Zimbabwe Journal of Science & Technology;Vol.12 | |
| dc.subject | Dehydrating yams | en_US |
| dc.subject | Refracture window | en_US |
| dc.subject | Drying curves | en_US |
| dc.subject | Thin-layer dying models | en_US |
| dc.subject | Research Subject Categories::TECHNOLOGY::Chemical engineering | en_US |
| dc.title | Dehydration and Rehydration Characterization of Yam (Dioscorea Rotundata) Tuber Slices Using a Refractance WindowTM Dryer, | en_US |
| dc.type | Article | en_US |