Effects of multi-stage dehumidified-air drying on the polyphenol content of Hydrocotyle bonariensis
Traditional drying methods involve high temperatures that degrade heat-sensitive compounds. Dehumidified-air drying, an alternative to traditional drying methods, is suitable for heat-sensitive compounds; however, it consumes a large amount of energy and is comparatively expensive. In this study, a...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Faculty of Food Science and Technology, Universiti Putra Malaysia
2017
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| Online Access: | http://psasir.upm.edu.my/id/eprint/56136/1/%2817%29.pdf |
| _version_ | 1796976416235978752 |
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| author | Go, S. K. Chia, S. L. Tan, C. P. Chong, Gun Hean |
| author_facet | Go, S. K. Chia, S. L. Tan, C. P. Chong, Gun Hean |
| author_sort | Go, S. K. |
| collection | UPM |
| description | Traditional drying methods involve high temperatures that degrade heat-sensitive compounds. Dehumidified-air drying, an alternative to traditional drying methods, is suitable for heat-sensitive compounds; however, it consumes a large amount of energy and is comparatively expensive. In this study, a multi-chamber dehumidified-air dryer was designed to dry Hydrocotyle bonariensis, and the retention of the polyphenol content of Hydrocotyle bonariensis under various drying conditions was examined. Multi-chamber dehumidified-air drying involves two chambers; each chamber was operated at temperatures of 30, 40, and 50°C with air volumetric flow rates of 30 and 50 L/min. The results indicated that the highest retention of total phenolic content and total flavonoid content, 24.67 mg of GAE/g dry weight (DW) and 2.204 mg of catechin/g DW, respectively, was obtained at 50°C with a 50 L/min air flow rate in the first drying chamber. Multi-stage dehumidified-air dryers have the potential to dry heat-sensitive products with reduced energy consumption. |
| first_indexed | 2024-03-06T09:25:30Z |
| format | Article |
| id | upm.eprints-56136 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T09:25:30Z |
| publishDate | 2017 |
| publisher | Faculty of Food Science and Technology, Universiti Putra Malaysia |
| record_format | dspace |
| spelling | upm.eprints-561362017-07-05T03:14:09Z http://psasir.upm.edu.my/id/eprint/56136/ Effects of multi-stage dehumidified-air drying on the polyphenol content of Hydrocotyle bonariensis Go, S. K. Chia, S. L. Tan, C. P. Chong, Gun Hean Traditional drying methods involve high temperatures that degrade heat-sensitive compounds. Dehumidified-air drying, an alternative to traditional drying methods, is suitable for heat-sensitive compounds; however, it consumes a large amount of energy and is comparatively expensive. In this study, a multi-chamber dehumidified-air dryer was designed to dry Hydrocotyle bonariensis, and the retention of the polyphenol content of Hydrocotyle bonariensis under various drying conditions was examined. Multi-chamber dehumidified-air drying involves two chambers; each chamber was operated at temperatures of 30, 40, and 50°C with air volumetric flow rates of 30 and 50 L/min. The results indicated that the highest retention of total phenolic content and total flavonoid content, 24.67 mg of GAE/g dry weight (DW) and 2.204 mg of catechin/g DW, respectively, was obtained at 50°C with a 50 L/min air flow rate in the first drying chamber. Multi-stage dehumidified-air dryers have the potential to dry heat-sensitive products with reduced energy consumption. Faculty of Food Science and Technology, Universiti Putra Malaysia 2017 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/56136/1/%2817%29.pdf Go, S. K. and Chia, S. L. and Tan, C. P. and Chong, Gun Hean (2017) Effects of multi-stage dehumidified-air drying on the polyphenol content of Hydrocotyle bonariensis. International Food Research Journal, 24 (2). pp. 589-593. ISSN 1985-4668; ESSN: 2231-7546 http://www.ifrj.upm.edu.my/24%20(02)%202017/(17).pdf |
| spellingShingle | Go, S. K. Chia, S. L. Tan, C. P. Chong, Gun Hean Effects of multi-stage dehumidified-air drying on the polyphenol content of Hydrocotyle bonariensis |
| title | Effects of multi-stage dehumidified-air drying on the polyphenol content of Hydrocotyle bonariensis |
| title_full | Effects of multi-stage dehumidified-air drying on the polyphenol content of Hydrocotyle bonariensis |
| title_fullStr | Effects of multi-stage dehumidified-air drying on the polyphenol content of Hydrocotyle bonariensis |
| title_full_unstemmed | Effects of multi-stage dehumidified-air drying on the polyphenol content of Hydrocotyle bonariensis |
| title_short | Effects of multi-stage dehumidified-air drying on the polyphenol content of Hydrocotyle bonariensis |
| title_sort | effects of multi stage dehumidified air drying on the polyphenol content of hydrocotyle bonariensis |
| url | http://psasir.upm.edu.my/id/eprint/56136/1/%2817%29.pdf |
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