MARC details
| 000 -LEADER |
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| fixed length control field |
02711nam a2200265 a 4500 |
| 001 - CONTROL NUMBER |
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| control field |
vtls000076026 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
KUKTEM |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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| control field |
20251114204552.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
131112t2013 my da f m 000 0 eng d |
| 020 ## - INTERNATIONAL STANDARD BOOK NUMBER |
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| International Standard Book Number |
THE0002210(Local) |
| 039 #9 - LEVEL OF BIBLIOGRAPHIC CONTROL AND CODING DETAIL [OBSOLETE] |
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| Level of rules in bibliographic description |
201905241001 |
| Level of effort used to assign nonsubject heading access points |
shamsul |
| -- |
201311121506 |
| -- |
nabilah |
| 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) |
QK495.L25 L38 2013 rs Bc. |
| 100 1# - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Lau, Mei Zhu |
| 245 10 - TITLE STATEMENT |
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| Title |
Extraction of phenolic compounds and flavonoids compounds from Orthosiphon Stamineus / |
| Statement of responsibility, etc. |
Lau Mei Zhu |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. |
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| Place of publication, distribution, etc. |
Kuantan, Pahang : |
| Name of publisher, distributor, etc. |
UMP, |
| Date of publication, distribution, etc. |
2013 |
| 300 ## - PHYSICAL DESCRIPTION |
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| Extent |
xv, 60 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 – 2013 |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE |
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| Bibliography, etc. note |
Bibliography : p. 57-59 |
| 520 3# - SUMMARY, ETC. |
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| Summary, etc. |
Phenolic and flavonoids compounds present in Orthosiphon stamineus (OS) exhibit high antioxidant capacity. This research was conducted to compare ultrasonic-assisted extraction (UAE) and microwave-assisted extraction (MAE) with maceration and investigate effects of solvents (70%-30% v/v methanol-water, 70%-30% v/v propanol-water, 50%-50% v/v methanol-water, 50%-50% v/v propanol-water, water, methanol and propanol), extraction time, microwave power and extraction temperature on Rosmarinic acid and Sinensetin extraction yields from OS dried powder. The extraction yields were analyzed by using Ultra Performance Liquid Chromatography (UPLC) and were compared to standard calibration curve with their retention times. Results from Total Phenolic Content (TPC) were used to support UPLC result. By UAE, the highest yield for Rosmarinic acid could be obtained with following conditions: 70%-30% v/v Methanol-water as solvent with extraction time of 90 minutes at 60 ̊C. The highest yield for Rosmarinic acid that could be obtained by using MAE was with following conditions: 70%-30% v/v Methanol-water with extraction time of 120 s at 450 W. By UAE, the highest yield for Sinensetin could be obtained with following conditions: propanol as solvent with extraction time of 90 minutes at 60 ̊C. Meanwhile, the highest yield for Rosmarinic acid that could be obtained by using MAE was with following conditions, 70%-30% v/v Methanol-water with extraction time of 120 s at 450 W. UAE and MAE can replace maceration in extraction of phenolic compounds and flavonoids compounds since UAE and MAE had higher yields than maceration in shorter time. Recommendations suggested in order to obtain optimization of this research were to study more effects or parameters in both UAE and MAE. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Lamiaceae |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Phenols |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Flavonoids |