MARC details
| 000 -LEADER |
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| fixed length control field |
02013nam a2200253 a 4500 |
| 001 - CONTROL NUMBER |
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| control field |
vtls000067873 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
KUKTEM |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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| control field |
20251114204526.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
121219t2012 my a f m 000 0 eng d |
| 020 ## - INTERNATIONAL STANDARD BOOK NUMBER |
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| International Standard Book Number |
THE0004057(Local) |
| 039 #9 - LEVEL OF BIBLIOGRAPHIC CONTROL AND CODING DETAIL [OBSOLETE] |
|---|
| Level of rules in bibliographic description |
201905160858 |
| Level of effort used to assign nonsubject heading access points |
fauzi |
| -- |
201212191633 |
| -- |
Fida |
| 040 ## - CATALOGING SOURCE |
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| Original cataloging agency |
UMP |
| 090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) |
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| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) |
TP156.E8 N67 2012 rs Bc. |
| 100 0# - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Norhamizah Johari |
| 245 10 - TITLE STATEMENT |
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| Title |
Batch extraction of 1,3,7-trymethylxanthine from KKM22 cocoa seeds / |
| Statement of responsibility, etc. |
Norhamizah Johari |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. |
|---|
| Place of publication, distribution, etc. |
Kuantan, Pahang : |
| Name of publisher, distributor, etc. |
UMP, |
| Date of publication, distribution, etc. |
2012 |
| 300 ## - PHYSICAL DESCRIPTION |
|---|
| Extent |
xiii, 38 p. : |
| Other physical details |
ill. ; |
| Dimensions |
30 cm. + |
| Accompanying material |
1 CD-ROM |
| 502 ## - DISSERTATION NOTE |
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| Dissertation note |
Project paper (Bachelor of Chemical Engineering) -- Universiti Malaysia Pahang - 2012 |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE |
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| Bibliography, etc. note |
Bibliography : p. 27-29 |
| 520 3# - SUMMARY, ETC. |
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| Summary, etc. |
1,3,7- trymethylxanthine (caffeine) is a naturally occurring substance found in cocoa seeds. The purpose of this research is to extract caffeine from Klon Koko Malaysia (KKM)22, to investigate the effect of particle size, solvent/feed ratio and extraction time, and also to determine the kinetic model for extraction of 1,3,7-trymethylxantine. The sample was prepared by grinding and sieving, followed by solid-liquid extraction using water by heat reflux extracting technique, liquid-liquid extraction with ethyl acetate, drying of caffeine by rotary evaporator, and finally analysis of the caffeine yield. The analysis of the caffeine yield was done using UV/Vis Spectrophotometric method. The caffeine yield was highest at sample particle size of 315 μm (0.22 % w/w caffeine or 2.1724 mg/g cocoa), solvent/feed ratio of 1:1 (0.22 % w/w caffeine or 2,2102 mg/g cocoa), and extraction time of 90 minutes (0.23 % w/w caffeine or 2.288 mg/g cocoa). The best conditions for the highest yield of caffeine from KKM22 were 315 μm of sample particle size, 1:1 of solvent/feed ratio, and 90 minutes of extraction time. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Extraction (Chemistry) |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Caffeine |