MARC details
| 000 -LEADER |
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| fixed length control field |
03457ntm a2200277 a 4500 |
| 001 - CONTROL NUMBER |
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| control field |
vtls000091314 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
KUKTEM |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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| control field |
20251117113259.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
150923t2015 my a f m 000 0 eng d |
| 020 ## - INTERNATIONAL STANDARD BOOK NUMBER |
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| International Standard Book Number |
THE0003970(Local) |
| 039 #9 - LEVEL OF BIBLIOGRAPHIC CONTROL AND CODING DETAIL [OBSOLETE] |
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| Level of rules in bibliographic description |
201905150916 |
| Level of effort used to assign nonsubject heading access points |
fauzi |
| Level of effort used to assign subject headings |
201712041047 |
| Level of effort used to assign classification |
fateeha |
| Level of effort used to assign subject headings |
201509231105 |
| Level of effort used to assign classification |
huda |
| -- |
201509231104 |
| -- |
huda |
| 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 A84 2015 r Bc. |
| 100 0# - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Ashwinder Chelliah |
| 245 10 - TITLE STATEMENT |
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| Title |
Separation of essential oil from mixtures of melissa officinalis and cymbopogan citratus leaves for mosquito repellent / |
| Statement of responsibility, etc. |
Ashwinder Chelliah |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. |
|---|
| Place of publication, distribution, etc. |
Kuantan, Pahang : |
| Name of publisher, distributor, etc. |
UMP, |
| Date of publication, distribution, etc. |
2015 |
| 300 ## - PHYSICAL DESCRIPTION |
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| Extent |
xv, 44 p. : |
| Other physical details |
ill. (some col.) ; |
| Dimensions |
30 cm. + |
| Accompanying material |
1 CD ROM |
| 500 ## - GENERAL NOTE |
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| General note |
Faculty of Chemical & Natural Resources Engineering |
| 502 ## - DISSERTATION NOTE |
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| Dissertation note |
Project paper (Bachelor of Chemical Engineering) -- Universiti Malaysia Pahang – 2015 |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE |
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| Bibliography, etc. note |
Bibliography : p.32-37 |
| 520 3# - SUMMARY, ETC. |
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| Summary, etc. |
Synthetic based chemicals such as DEET is one of the most commercialised synthetic based mosquito repellents. This compound is effective against a wide range of insects and arthropods but its usage has raised several concerns to human health and surrounding environment.To combat its negative effects, there has been an overwhelming interest of producing essential oil products from different species of natural plant materials in order to access their repellent properties.Essential oils are odourless volatile mixture of hydrocarbons and their repellent properties have been linked to the presence of monoterpenes and sesquiterpenes.Therefore, it is important to identify a best technique to extract the essential oil without causing significant effect on their chemical constituents, since the conventional methods implied years back are time consuming and also record a low extraction yield.In order to enhance the extraction yield, an improvised approach namely Ultrasound Assisted Extraction-Hydrodistillation method will be exhibited to separate essential oil from mixtures of Mellissa officinalis and Cymbopogan citratus leaves. At the same time to evaluate the effectiveness of repelling properties in the essential oil, mixtures of leaves have been chosen in this extraction process.In this study, the effects of three main factors which are ultrasonic pre-treatment time, raw material to water ratio, and ultrasonic frequency were investigated.As a result, the best condition gives the highest yields of oil (0.3820%) were found at the ultrasonic frequency of 5kHz, pre-treatment time of 60 min and solid to water ratio of 1:6. The mixture ofMelissa officinalis and Cymbopogan citratus leaves reflects higher essential oil yield compared with the yield of Mellissa officinalisleaves. Finally the oil samples were analysed by using Gas Chromatography Mass Spectrometry (GC-MS). From the analysis, almost similar chemical compounds with potentiating repellent activity such as linalool, citronellal, geraniol, citral, α-pinene, and limonene were found in their respective essential oils. Anyhow, the amount it contains differs from one another. Moreover, the repellency test carried out using the extracted oil against mosquito have also showed positive outcome. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Extraction (Chemistry) |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Essences and essential oils |
| 856 40 - ELECTRONIC LOCATION AND ACCESS |
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| Uniform Resource Identifier |
<a href="http://ecollib.ump.edu.my/id/eprint/9497">http://ecollib.ump.edu.my/id/eprint/9497</a> |
| Public note |
Access in library only |