Moisture sorption isotherm of C. nutans herbal leaves
The moisture sorption isotherms of Clinacanthus nutans (C. nutans) herbal leaves were established at three different temperatures of 30°C, 40°C, and 50°C, and water activity between 0.3–0.9 using a static gravimetric method. The results showed that equilibrium moisture content of C. nutans increased...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Published: |
EJournal Publishing
2023
|
| Online Access: | http://psasir.upm.edu.my/id/eprint/108568/ |
| _version_ | 1848865174379823104 |
|---|---|
| author | Abdullah, Sriyana Yusof, Yus Aniza Abdul Karim Shah, Nor Nadiah Mohd Salleh, Faiqa Shazeaa Ali, Muhammad Azhar Abdul Razak, Norawanis |
| author_facet | Abdullah, Sriyana Yusof, Yus Aniza Abdul Karim Shah, Nor Nadiah Mohd Salleh, Faiqa Shazeaa Ali, Muhammad Azhar Abdul Razak, Norawanis |
| author_sort | Abdullah, Sriyana |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The moisture sorption isotherms of Clinacanthus nutans (C. nutans) herbal leaves were established at three different temperatures of 30°C, 40°C, and 50°C, and water activity between 0.3–0.9 using a static gravimetric method. The results showed that equilibrium moisture content of C. nutans increased with increasing water activity at a constant temperature for both desorption and adsorption isotherms. In contrast, the equilibrium moisture content decreased when the temperature increased at a constant water activity for all isotherms. The sorption isotherms exhibited Type III behaviour or J-shaped curve according to Brunauer-Emmett-Teller (BET) classification. It was found that Guggenheim-Anderson-de Boer (GAB) and Peleg models were the best-fit to the experimental moisture isotherms. The maximum net isosteric heat of sorption values were found to be 70 kJ/mol and 13 kJ/mol for desorption and adsorption respectively. The moisture sorption isotherms established are essential for optimum design of C. nutans dryer and storage conditions. |
| first_indexed | 2025-11-15T14:00:31Z |
| format | Article |
| id | upm-108568 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-15T14:00:31Z |
| publishDate | 2023 |
| publisher | EJournal Publishing |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-1085682024-08-08T07:03:29Z http://psasir.upm.edu.my/id/eprint/108568/ Moisture sorption isotherm of C. nutans herbal leaves Abdullah, Sriyana Yusof, Yus Aniza Abdul Karim Shah, Nor Nadiah Mohd Salleh, Faiqa Shazeaa Ali, Muhammad Azhar Abdul Razak, Norawanis The moisture sorption isotherms of Clinacanthus nutans (C. nutans) herbal leaves were established at three different temperatures of 30°C, 40°C, and 50°C, and water activity between 0.3–0.9 using a static gravimetric method. The results showed that equilibrium moisture content of C. nutans increased with increasing water activity at a constant temperature for both desorption and adsorption isotherms. In contrast, the equilibrium moisture content decreased when the temperature increased at a constant water activity for all isotherms. The sorption isotherms exhibited Type III behaviour or J-shaped curve according to Brunauer-Emmett-Teller (BET) classification. It was found that Guggenheim-Anderson-de Boer (GAB) and Peleg models were the best-fit to the experimental moisture isotherms. The maximum net isosteric heat of sorption values were found to be 70 kJ/mol and 13 kJ/mol for desorption and adsorption respectively. The moisture sorption isotherms established are essential for optimum design of C. nutans dryer and storage conditions. EJournal Publishing 2023 Article PeerReviewed Abdullah, Sriyana and Yusof, Yus Aniza and Abdul Karim Shah, Nor Nadiah and Mohd Salleh, Faiqa Shazeaa and Ali, Muhammad Azhar and Abdul Razak, Norawanis (2023) Moisture sorption isotherm of C. nutans herbal leaves. Journal of Advanced Agricultural Technologies, 10 (1). pp. 8-15. ISSN 2373-423X https://www.joaat.com/article/421 10.18178/joaat.10.1.8-15 |
| spellingShingle | Abdullah, Sriyana Yusof, Yus Aniza Abdul Karim Shah, Nor Nadiah Mohd Salleh, Faiqa Shazeaa Ali, Muhammad Azhar Abdul Razak, Norawanis Moisture sorption isotherm of C. nutans herbal leaves |
| title | Moisture sorption isotherm of C. nutans herbal leaves |
| title_full | Moisture sorption isotherm of C. nutans herbal leaves |
| title_fullStr | Moisture sorption isotherm of C. nutans herbal leaves |
| title_full_unstemmed | Moisture sorption isotherm of C. nutans herbal leaves |
| title_short | Moisture sorption isotherm of C. nutans herbal leaves |
| title_sort | moisture sorption isotherm of c. nutans herbal leaves |
| url | http://psasir.upm.edu.my/id/eprint/108568/ http://psasir.upm.edu.my/id/eprint/108568/ http://psasir.upm.edu.my/id/eprint/108568/ |