Drying effects of vacuum far-infrared on aquilaria malaccensis leaves

6th International Conference on Manufacturing Engineering and Process

工业技术;物理学

Alwi, Habsah^1 ; Ali, Sherif Abdulbari^1 ; Hamid, Ku Halim Ku^1 ; Shamsudin, Mohamad Zaid^1 ; Radzi, Nurhaslina Che^1 ; Md Zaki, Nurul Asyikin^1 ; Muhd, Miradatul Najwa^1

Faculty of Chemical Engineering, Universiti Teknologi Mara, Shah Alam

40450, Malaysia^1

关键词: Aquilaria malaccensis;    Drying condition;    Drying technique;    Elemental analyzers;    Energy transfer mechanisms;    Far-infrared radiation;    Lower temperatures;    Optimum conditions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/885/1/012017/pdf
DOI  :  10.1088/1742-6596/885/1/012017

学科分类：工业工程学

来源: IOP

【 摘 要 】

Vacuum far-infrared radiation is an advanced drying technique that has the unique characteristics of energy transfer mechanism. In vacuum drying, the moisture evaporates at lower temperature while in infrared drying, the energy is absorbed directly which save a considerable amount of energy. The combination of the two would results in the time savings and enhancement of product quality. The effects of vacuum far-infrared drying on colour changes, elements and moisture content removal of Aquilaria Malaccensis' leaves were investigated. The parameter of the experiments were set to be temperature of 40, 50 and 60 °C, pressure of 0.6 and 0.8 bar, and a residence time of 120 minutes. The drying process reaches it optimum condition at temperature of 50°C and pressure of 0.6 bar, where the colour changes of the leaves, moisture content removal and elemental analyzer showed the best result of all six runs. The optimum drying conditions are recommended for further researches of the leaves.