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008			220308s2020 my a|||fr|||| 000 0 eng d
020			_aTHE0009136(Local) _qhardback
040			_aUMP _beng _cUMP _erda
090			_aFSTI .A55 2020 r Thesis
100	1		_aAnis Izzati Najwa Ibrahim, _eauthor.
245	1	0	_aInvestigation on optimum parameters for microwave drying technique of oil palm trunk: response surface methodology / _cAnis Izzati Najwa Ibrahim
264		1	_aKuantan, Pahang : _bUMP, _c2020
264		4	_c© 2020
300			_axiii, 94 pages : _billustrations ; _c30 cm. + _e1 CD-ROM
336			_atext _2rdacontent
336			_atext _2rdacontent
337			_aunmediated _2rdamedia
337			_acomputer _2rdamedia
338			_avolume _2rdacarrier
338			_acomputer disc _2rdacarrier
347			_atext file _bPDF _2rda
500			_aFaculty of Industrial Sciences and Technology
502			_aThesis (Master of Science ) -- Universiti Malaysia Pahang – 2020
504			_aIncludes bibliographical references
520	3		_aBackground of the study was evaluated the optimum manufacturing parameters to dry OPT using microwave approach. Experimental samples were subjected to fresh OPT and optimum OPT of the microwave drying process, in which the power intensity and exposure time were ranging from 600 to 1000 W and from 10 to 15 min, respectively. The optimum condition was determined by Response Surface Methodology (RSM) approach under the scope of Central Composite Design (CCD). The experimental and predicted values of samples were compared. The effect of the microwave drying process on the OPT samples was a study based on its physical, mechanical, and chemical properties. Physical properties of OPT were evaluated, such as moisture content and density. The mechanical properties were verified by impact and compression testing. The anatomical features of the optimum microwave thermal OPT were observed using Scanning Electron Microscopy. The degradation of the specimens was determined using Thermogravimetric Analyzer. From this study, the optimum parameters in microwave drying can be obtained by using (RSM) with power intensity and exposure time of 800 W and 11 min, respectively. The moisture content of optimum OPT show specific decreasing values. The outcome of mechanical properties showed that the optimum OPT was better than the fresh OPT. The chemical analysis was also performed to investigate the chemical constituents in optimum OPT, and the results showed that the microwave drying process influenced the chemical composition in OPT. This is due to the degradation of cellulose and hemicellulose compared to lignin and extractives that are slightly degraded towards microwave drying process. The changes like cellulose, hemicellulose, lignin, and extractives during the drying process contribute to the improvement of its hygroscopicity and stability
610	2	0	_aFaculty of Industrial Sciences and Technology _xDissertations
650		0	_aUniversities and colleges _xDissertations
650		0	_aTheses
942			_2lcc _cRESTRICT