MARC details
| 000 -LEADER |
|---|
| fixed length control field |
02596nam a2200253 a 4500 |
| 001 - CONTROL NUMBER |
|---|
| control field |
vtls000031314 |
| 003 - CONTROL NUMBER IDENTIFIER |
|---|
| control field |
KUKTEM |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
|---|
| control field |
20251114204418.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
|---|
| fixed length control field |
080829t2008 my a f m 000 0 eng|d |
| 020 ## - INTERNATIONAL STANDARD BOOK NUMBER |
|---|
| International Standard Book Number |
THE0002266(Local) |
| 039 #9 - LEVEL OF BIBLIOGRAPHIC CONTROL AND CODING DETAIL [OBSOLETE] |
|---|
| Level of rules in bibliographic description |
201905241135 |
| Level of effort used to assign nonsubject heading access points |
shamsul |
| Level of effort used to assign subject headings |
201107132241 |
| Level of effort used to assign classification |
VLOAD |
| Level of effort used to assign subject headings |
200908141526 |
| Level of effort used to assign classification |
VLOAD |
| Level of effort used to assign subject headings |
200908141456 |
| Level of effort used to assign classification |
VLOAD |
| -- |
200808291016 |
| -- |
ida84 |
| 040 ## - CATALOGING SOURCE |
|---|
| Original cataloging agency |
UMP |
| 090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) |
|---|
| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) |
QP702.C5 S74 2008 rs Thesis |
| 100 0# - MAIN ENTRY--PERSONAL NAME |
|---|
| Personal name |
Stephenie Ak Kalut |
| 245 10 - TITLE STATEMENT |
|---|
| Title |
Enhancement of degree of deacetylation of chitin in chitosan production / |
| Statement of responsibility, etc. |
Stephenie Ak Kalut |
| 246 3# - VARYING FORM OF TITLE |
|---|
| Title proper/short title |
Enhancement of degree of deacetylation of chitin in chitosan production |
| Medium |
[electronic resource] |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. |
|---|
| Place of publication, distribution, etc. |
Kuantan, Pahang : |
| Name of publisher, distributor, etc. |
UMP, |
| Date of publication, distribution, etc. |
2008 |
| 300 ## - PHYSICAL DESCRIPTION |
|---|
| Extent |
66 p. : |
| Other physical details |
ill. (some col.) ; |
| Dimensions |
30 cm. + |
| Accompanying material |
1 computer disc |
| 502 ## - DISSERTATION NOTE |
|---|
| Dissertation note |
Project paper (Bachelor of Chemical Engineering) --- Universiti Malaysia Pahang - 2008 |
| 520 3# - SUMMARY, ETC. |
|---|
| Summary, etc. |
Chitosan is made from crustacean shells by a chemical process involving demineralization, deproteinization, decolorization, and deacetylation. The process of deacetylation involves the removal of acetyl groups from the molecular chain of chitin, leaving behind a complete amino group (-NH) and chitosan versatility depends mainly on this high degree chemical reactive amino groups. The purpose of this research is to observe the parameters that can enhance the degree of deacetylation of chitosan production to the highest percentage. The observed parameters are the temperature of heating, concentration of sodium hydroxide, and the time of heating. The obtained chitin was converted into the more useful soluble chitosan by reaction with sodium hydroxide (NaOH) solution of various concentrations, then the alkaline chitin was heated in an autoclave with different time and temperature of heating which dramatically reduced the time of deacetylation. The method used to determine the degree of deacetylation of chitosan is the linear potentiometric titration. From the result, the highest degree of deacetylation can be achieved at the temperature of 1342oC, and 70% concentration of sodium hydroxide with DDA% of 98.38% and 98.79% respectively. It took only 10 minutes to also achieve highest degree of deacetylation, 89.05%. In conclusion, the increasing of temperature and concentration of sodium hydroxide will increase the degree of deacetylation of chitin. The increasing of time of heating will decrease the degree of deacetylation. -Author |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Chitin |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Chitosan |