Effect of ultrasound on henna leaves drying and extraction of lawsone: Experimental and modeling study
| Autor: | Belkacem Draoui, Mostafa Abid, Antonio Mulet, Said Bennaceur, Abdelaziz Berreghioua, Juan A. Cárcel, Lyes Bennamoun |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Effective diffusivity Control and Optimization Materials science TECNOLOGIA DE ALIMENTOS Diffusion effective diffusivity Energy Engineering and Power Technology Activation energy Thermal treatment 01 natural sciences lcsh:Technology Lawsone chemistry.chemical_compound 0404 agricultural biotechnology 010608 biotechnology Ultrasound Electrical and Electronic Engineering Engineering (miscellaneous) Renewable Energy Sustainability and the Environment business.industry ultrasound lcsh:T activation energy lawsone Lawsonia inermis Extraction (chemistry) 04 agricultural and veterinary sciences 040401 food science chemistry Yield (chemistry) business Energy (miscellaneous) Nuclear chemistry |
| Zdroj: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia instname Energies, Vol 14, Iss 1329, p 1329 (2021) Energies; Volume 14; Issue 5; Pages: 1329 |
| Popis: | [EN] The effect of drying temperature and the application of ultrasound on drying kinetics of Lawsonia inermis (henna) leaves and the extraction of lawsone from the dried samples was addressed. Indeed, henna leaves were dried with and without the application of ultrasound (21.7 kHz, 30.8 kW/m3) at 40, 50 and 60 C with a constant air velocity (1 m/s). As expected, both the increase of temperature and the application of ultrasound decreased the drying time and increased the rate of extraction of the lawsone. The values of the effective diffusion coefficients obtained were used to quantify this influence showing the value increases with higher drying temperature and the application of ultrasound. Moreover, the influence of temperature was quantified by the estimation of the activation energy from an Arrhenius-type equation (46.25 kJ/mol in the case of drying without ultrasound application and 44.06 kJ/mol in the case of ultrasonically-assisted drying). Regarding the influence of studied variables on lawsone extraction yield, the higher is the temperature, the lower is the yield, probably linked with lawsone degradation reaction due to thermal treatment. On the contrary, the application of ultrasound improved the extraction yield mainly at the lower drying temperature tested of 40 C. This research was funded by Science and Innovation Ministry of Spain, grant number PID2019-106148RRC42. |
| Databáze: | OpenAIRE |
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