Experimental Verification of Yam (Dioscorea rotundata) Drying with Solar Adsorption Drying
| Autor: | Gloria Kyere, Anton J.B. van Boxtel, Emmanuel Amankwah, Herbert Kyeremateng |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Biobased Chemistry and Technology vitamin C Dioscorea rotundata Adsorption drying lcsh:Technology 01 natural sciences Solar drying lcsh:Chemistry Cycle time 0404 agricultural biotechnology Adsorption 010608 biotechnology General Materials Science Vitamin C Cultivar lcsh:QH301-705.5 Instrumentation VLAG Mathematics Fluid Flow and Transfer Processes biology lcsh:T Process Chemistry and Technology General Engineering 04 agricultural and veterinary sciences biology.organism_classification 040401 food science lcsh:QC1-999 Computer Science Applications adsorption drying Horticulture lcsh:Biology (General) lcsh:QD1-999 lcsh:TA1-2040 Yam Composition (visual arts) solar drying lcsh:Engineering (General). Civil engineering (General) lcsh:Physics |
| Zdroj: | Applied Sciences, Vol 9, Iss 18, p 3927 (2019) Applied Sciences Volume 9 Issue 18 Applied Sciences 9 (2019) 18 Applied Sciences, 9(18) |
| ISSN: | 2076-3417 |
| Popis: | This work evaluates the yam (Dioscorea rotundata) drying performance of solar adsorption drying (SAD) compared to solar drying (SD) and open sun drying (OSD). The evaluation concerns the drying cycle for batches of yam, the effect on vitamin C, color and composition. As SAD can be applied during the night, by using air dehumidified by passing through a bed of silica gel, the cycle time for drying batches of yam can be reduced over 20&ndash 25% compared to SD and halved compared to OSD. SAD is thereby most effective during the first nights of drying when the driving force is the highest. Composition was not affected by drying methods but did affect vitamin C content. Vitamin C retention is not significant different for SD and SAD, but with a slight preference for SD. For three yam cultivars (&lsquo Pona&rsquo &lsquo Lilii&rsquo and &lsquo Dente&rsquo ), &lsquo dried fastest and &lsquo drying slowest. SAD maintained 16 the whitish color of yam better than the other drying methods. |
| Databáze: | OpenAIRE |
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