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001			vtls000031080
003			KUKTEM
005			20251114204415.0
008			080821t2008 my a f m 000 0 eng|d
020			_aTHE0004888(Local)
039		9	_a201905131234 _bSHAHRILJ _c201107132233 _dVLOAD _c200908141206 _dVLOAD _c200908141136 _dVLOAD _y200808211531 _zida84
040			_aUMP
090			_aTP959.E8 K53 2008 rs Thesis
100	0		_aK. Nayagi Sheridoman
245	1	0	_aMonitoring the quality of essential oil from Etlingera SP. 3 by GCMS / _cK. Nayagi Sheridoman
246	3		_aMonitoring the quality of essential oil from Etlingera SP. 3 by GCMS _h[electronic resource]
260			_aKuantan, Pahang : _bUMP, _c2008
300			_a66 p. : _bill. (some col.) ; _c30 cm. + _e1 computer disc
502			_aProject paper (Bachelor of Chemical Engineering) --- Universiti Malaysia Pahang - 2008
520	3		_a… Etlingera or “kantan” is a part of vast Zingiberaceae family . In the Malesian region, a floristically distinct region there are 600 species encompassing 24 genera. The commercial value of the family arises from its utility as ingredients of flavoring, colors and fragrance. The highest content of oil is usually in the rhizomes of this plant. Essential oils gradually loose freshness upon standing. The quality of the essential oil can be monitored by several methods. Gas chromatography-mass spectrometry (GC/MS) is the most common tool used in quality control today. The rhizome samples of Etlingera sp. 3 is collected from a nearby forest in Bentong, Pahang. Pre-treatment of the sample prior to extraction is done stages. The stages comprise of washing, drying, and grinding to fine pieces. The extraction of essential oil from the rhizome material of Etlingera sp. 3 is obtained by hydro-distillation. Method of analysis of the essential oil is using GC-MS, and monitoring the effect of storage, i.e., effect of exposure to light and air, and standing, on the quality of the essential oil. The quality of Etlingera sp.3 essential oil as monitored by GCMS shows degradation upon exposure to heat and light. Certain compounds degrades drastically while others steadily declines as can be seen further in the discussion. In order to preserve its quality and effectiveness it is best kept at its optimum storage condition which is refrigerated in a dark bottle under -4 degrees Celsius.-Author
650		0	_aEssences and essential oils
650		0	_aExtraction (Chemistry)
999			_aVIRTUA40 _c1500 _d1506
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