| 000 | 02515nam a2200265 a 4500 | ||
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| 001 | vtls000031359 | ||
| 003 | KUKTEM | ||
| 005 | 20251114204355.0 | ||
| 008 | 080903t2008 my a f m 000 0 eng|d | ||
| 020 | _aTHE0002265(Local) | ||
| 039 | 9 |
_a201905241135 _bshamsul _c201302011511 _dhuda _c201107132130 _dVLOAD _c200908141554 _dVLOAD _y200809030858 _zida84 |
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| 040 | _aUMP | ||
| 090 | _aQP702.C5 S58 2008 rs Thesis | ||
| 100 | 0 | _aSiti Nurshuhada Mat Yussof | |
| 245 | 1 | 4 |
_aThe effect of ultrasonic wave on the degree of deacetylation of chitin in chitosan production / _cSiti Nurshuhada Mat Yussof |
| 246 | 3 |
_aThe effect of ultrasonic wave on the degree of deacetylation of chitin in chitosan production _h[electronic resource] |
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| 260 |
_aKuantan, Pahang : _bUMP, _c2008 |
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| 300 |
_a61 p. : _bill. (some col.) ; _c30 cm. + _e1 computer disc |
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| 502 | _aProject paper (Bachelor of Chemical Engineering) -- Universiti Malaysia Pahang - 2008 | ||
| 520 | 3 | _aChitosan 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 | |
| 650 | 0 | _aChitin | |
| 650 | 0 | _aChitosan | |
| 650 | 0 | _aUltrasonic waves | |
| 999 |
_aVIRTUA40 _c931 _d937 |
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