02598ntm a2200349 i 4500 MY-KuUP 20260420184047.0 t||||fr|||| 000 0 ta 260420t20252025my a|||fr|||| 000 0 eng d THE0010482 (Local) Hardback UMPSA eng UMPSA rda FIST .A56 2025 r Bc. Law, Ann Gie, author. Extraction and identification of chemical compounds from agarwood leaves (aquilaria species) using different processing methods / Law Ann Gie Kuantan, Pahang : UMPSA, 2025 © 2025 x, 84 pages : illustrations ; rdacontent text rdamedia unmediated rdacarrier volume rda text file PDF Faculty of Industrial Sciences and Technology Final Year Report (Bachelor of Applied Science of Industrial Chemistry) -- Universiti Malaysia Pahang Al-Sultan Abdullah - 2025 Include bibliographical reference This study investigates the extraction and characterisation of bioactive chemical compounds from the leaves of Aquilaria malaccensis (agarwood) processed through two distinct drying methods: spray drying and freeze drying. Employing water-based Soxhlet extraction, the research identifies the influence of these drying techniques on the retention and degradation of volatile and non-volatile compounds, evaluated through advanced analytical methods, including Solid Phase Microextraction-Gas Chromatography-Mass Spectrometry (SPME-GC-MS) and Liquid Chromatography-Quadrupole Time-of-Flight Mass Spectrometry (LC-QToF-MS). Freeze drying demonstrated superior preservation of thermally sensitive bioactive compounds such as phenylethyl alcohol, 1-galloyl-β-D-glucose, and Dengibsin, essential for their antioxidant, antimicrobial, and anti-inflammatory properties. In contrast, spray drying retained robust compounds like Tubuloside A and 6-Gingerol but exhibited significant loss of chemical diversity due to thermal degradation. This comparative analysis underscores the efficacy of freeze drying in maintaining the structural and functional integrity of bioactives, positioning it as the preferred method for premium applications in pharmaceuticals, nutraceuticals, and cosmeceuticals. Faculty of Industrial Sciences and Technology Dissertations Universities and colleges Dissertations Theses Dissertations https://umpir.ump.edu.my/id/eprint/46118 lcc PSM 0 0 lcc 0 0 10000 10000 2026-04-20 0 FIST .A56 2025 r Bc. T000003754 2026-04-20 18:41:48 2026-04-20 PSM 104760 104766