02515nam a2200265 a 4500 vtls000031359 KUKTEM 20251114204355.0 080903t2008 my a f m 000 0 eng|d THE0002265(Local) 201905241135 shamsul 201302011511 huda 201107132130 VLOAD 200908141554 VLOAD 200809030858 ida84 UMP QP702.C5 S58 2008 rs Thesis Siti Nurshuhada Mat Yussof The effect of ultrasonic wave on the degree of deacetylation of chitin in chitosan production / Siti Nurshuhada Mat Yussof The effect of ultrasonic wave on the degree of deacetylation of chitin in chitosan production [electronic resource] Kuantan, Pahang : UMP, 2008 61 p. : ill. (some col.) ; 30 cm. + 1 computer disc Project paper (Bachelor of Chemical Engineering) -- Universiti Malaysia Pahang - 2008 Chitosan is a natural carbohydrate biopolymer derived from deacetylation of chitin by a chemical process that was extracted from crustacean such as shrimp shells. There are four majors steps to produce chitosan which are involving demineralization, deproteinization, decolorization, and deacetylation A study on ultrasonic wave was performed to examine the effect on the degree deacetylation of chitin in chitosan production. The study was undertaken to evaluate the effects of ultrasonic wave on the degree deacetylation of chitin in chitosan production with three variables parameters which were reaction time (t), temperature of ultrasonic wave (T) and the power lever ultrasonic wave (P). At the end of the research the highest percentage degree deacetylation of chitosan for reaction time is 77.36% at 60 minutes while for the temperature ultrasonic wave is 79.62% at 90oC and for the last parameter is power lever ultrasonic wave is 83.45% at 60% power lever. The advantages using ultrasonic wave is can enhancement on mass transfer by causes cavitation which causes extremes of temperature and pressure in the liquid where the reaction happen and can make the reaction faster. This process is used to remove and refine the acetyl groups from chitin and increased the degree deacetylation. This method is effective to increase the quality of chitosan production.-Author Chitin Chitosan Ultrasonic waves 0 0 0 1 10000 10000 2019-09-04 0 QP702.C5 S58 2008 rs Thesis 0000031487 2019-09-04 00:00:00 1 2019-09-04 PSM 0 0 0 1 10000 10000 2019-09-04 0 CD 2807 | QP702.C5 S58 2008 rs Thesis 0000031488 2019-09-04 00:00:00 1 2019-09-04 PSM VIRTUA40 931 937 VTLSSORT0080*0200*0400*0900*1000*2450*2460*2600*3000*5020*5200*6500*6501*6502*9992