02169nam a2200253 a 4500 vtls000057026 KUKTEM 20251114204436.0 111212t2010 my da f m 000 0 eng d THE0004093(Local) 201905160932 fauzi 201112121138 Fida UMP TP156 .E8 T36 2010 rs Bc. Tan, Kim Pieu Comparison of microwave-assisted hydrodistillation with the conventional hydrodistillation method in the extraction of essential oil (lemongrass and star anise) / Tan Kim Pieu Kuantan, Pahang : UMP, 2010 xv, 90 p. : ill. (some col.) ; 30 cm. + 1 computer disc Project paper (Bachelor of Chemical Engineering) -- Universiti Malaysia Pahang - 2010 Bibliography: p. 75-80 Microwave-assisted hydrodistillation (MAHD) has recently been developed for the extraction of essential oils from plant materials. In this study, microwaveassisted hydrodistillation was investigated for the extraction of essential oils from lemongrass and start anise and the results were compared with those of the conventional hydrodistillation in terms of extraction time, extraction yield/efficiency and chemical composition. Microwave-assisted hydrodistillation was efficient in extraction in terms of extraction time and energy saving. Lemongrass and star anise was in the ratio of 1:10 with water and the essential oils components were identified using GCMS. There were significant different in the extraction yield of essential oils from both of the method and higher yield were obtained from MAHD method. Results of analysis from gas chromatography-mass spectrometry indicated that the use of microwave in hydrodistillation did not adversely influence the composition of essential oils. Microwave-assisted hydrodistillation was found to be environmentally friendly due to its shorter extraction time and therefore lower energy consumption. Extraction (Chemistry) Essences and essential oils 0 0 0 1 10000 10000 2019-09-04 0 TP156 .E8 T36 2010 rs Bc. 0000060208 2019-09-04 00:00:00 1 2019-09-04 PSM 0 0 0 1 10000 10000 2019-09-04 0 CD 5499 | TP156 .E8 T36 2010 rs Bc. 0000060209 2019-09-04 00:00:00 1 2019-09-04 PSM VIRTUA40 2128 2134 VTLSSORT0080*0200*0400*0900*1000*2450*2600*3000*5020*5040*5200*6500*6501*9992