Tang, Shuen Jye. (2020) Characterisation of agarwood hydrodistillation by-products: chemical, physical and microbiological properties. [Project Paper] (Submitted)
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Abstract
Resinous agarwood produced from Aquilaria trees can be extracted for its essential oils. Agarwood and its essential oil are broadly employed perfumes, food, and beverages. Hydrodistillation of agarwood has yield two liquid by-products namely residual water and hydrosol. These by-products might have some economic values since they are believed to contain small fraction of agarwood oil and other water soluble bioactive compound which can be further utilized in manufacturing of cosmetics products. The present study is carried out in order to characterise the agarwood hydrodistillation by-products based on chemical, physical and microbiological properties. The residual water that contains tiny wood debris, dirt, suspended particles and microorganisms has to be clarified before further analysis and application. Three recovery processes such as centrifugation, microfiltration and redistillation were proposed in this study and their effectiveness were studied based on the properties. Chemical properties such as chemical profile by GC-MS analysis (for by-products), pH value and total dissolved solids, physical properties such as visual observation, turbidity, particle size analysis, and for microbiological properties such as microbial load were studied for all water samples. The findings suggested that hydrosol is more suitable to be applied for further usage as compared to residual water since hydrosol shows better results in the analysis of chemical, physical and microbiological properties. The presence of major aromatic compound in hydrosol namely benzylacetone has proved that it is suitable for manufacturing of cosmetics products for example soap and other aesthetic products providing that it must be collected aseptically and stored in good conditions to prevent any contamination that will reduce its shelf-life. However, the properties of recovered agarwood residual.
| Item Type: | Project Paper |
|---|---|
| Faculty: | Faculty of Engineering |
| Depositing User: | Ms. AZLINA ZAINAL ABIDIN |
| Date Deposited: | 19 Oct 2023 08:15 |
| Last Modified: | 19 Oct 2023 08:15 |
| URI: | http://psaspb.upm.edu.my/id/eprint/1602 |
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