02860ntm a2200265 a 4500 vtls000085186 KUKTEM 20251117113241.0 150203t2011 my a f m 000 0 eng d THE0003969(Local) 201905150915 fauzi 201710031619 aishah 201502031119 fawwaz UMP TP156.E8 A83 2011 r Thesis Asdarina Yahya Kajian terhadap pelbagai teknik pengekstrakan minyak pati dari tanaman nilam (pogostemon cablin benth) / Asdarina Yahya Kuantan, Pahang : UMP, 2011 xviii, 141 p. : ill. ; 30 cm. + 1 CD-ROM Faculty of Chemical & Natural Resources Engineering Thesis (Master of Chemical Engineering) -- Universiti Malaysia Pahang – 2011 Bibliography : p. 116-123 Patchouli is a natural forest crop which contains essential oil of high value and with overwhelmed demand especially from the perfumery, cosmetics, and alternative medicines industry. The extraction of patchouli oil is still conducted via traditional method, with less emphasis on increasing the efficiency of the system, quality and optimizing the operating condition so as to operate the system efficiently. This study focused on developing the most effective method of extracting patchouli oil which able to produce the highest yield the shortest period of time. In addition, study was also conducted to examine the method of sample preparation and the effect of extraction time on the effectiveness of the system. Three methods of extraction and three types of sample were investigated, namely hydro distillation, steam distillation and combination of ultrasonic pretreatment with hydro distillation, with original or unaltered sample, cut sample, and ground sample, respectively. The outcome of the research revealed that steam distillation is a superior method of extracting patchouli oil, compared to the other two methods, and the usage of cut sample with extraction time of six hours produced the highest yield at 2.72%. Analysis via GC-MS showed that all methods of extraction examined in this study produced patchouli oil with quality surpassed the minimum requirement of commercial patchouli oil in the market. Optimization via application of Response Surface Methodology showed that the system can be represented by a linear model. From the model, experiment was conducted in accordance with the suggested maximum operating conditions, and the extraction yield was increased to 2.82%, which is 3.67% higher than the yield before the system was maximized Extraction (Chemistry) http://ecollib.ump.edu.my/3899/ Access in library only 0 0 lcc 0 1 10000 10000 2019-09-04 0 TP156.E8 A83 2011 r Thesis 0000091465 2019-09-04 00:00:00 1 2019-09-04 THESIS 0 0 lcc 0 1 10000 10000 2019-09-04 0 CD 8506 | TP156.E8 A83 2011 r Thesis 0000091466 2019-09-04 00:00:00 1 2019-09-04 THESIS VIRTUA40 5447 5453 VTLSSORT0080*0200*0400*0900*1000*2450*2600*3000*5000*5020*5040*5200*6500*8560*9992