MARC details
| 000 -LEADER |
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| fixed length control field |
03985nam a2200265 a 4500 |
| 001 - CONTROL NUMBER |
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| control field |
vtls000058696 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
KUKTEM |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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| control field |
20251114204511.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
120316t2011 my a f m 001 0 eng d |
| 020 ## - INTERNATIONAL STANDARD BOOK NUMBER |
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| International Standard Book Number |
THE0003986(Local) |
| 039 #9 - LEVEL OF BIBLIOGRAPHIC CONTROL AND CODING DETAIL [OBSOLETE] |
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| Level of rules in bibliographic description |
201905150924 |
| Level of effort used to assign nonsubject heading access points |
fauzi |
| Level of effort used to assign subject headings |
201710041235 |
| Level of effort used to assign classification |
aishah |
| -- |
201203161128 |
| -- |
ida |
| 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 D47 2011 rs Thesis |
| 100 0# - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Dessy Ambarwati |
| 245 10 - TITLE STATEMENT |
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| Title |
Characterization and process optimization of Melastoma malabathricum l. extract / |
| Statement of responsibility, etc. |
Dessy Ambarwati |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. |
|---|
| Place of publication, distribution, etc. |
Kuantan, Pahang : |
| Name of publisher, distributor, etc. |
UMP, |
| Date of publication, distribution, etc. |
2011 |
| 300 ## - PHYSICAL DESCRIPTION |
|---|
| Extent |
xxii, 134 p. : |
| Other physical details |
ill. (some col.) ; |
| Dimensions |
30 cm. + |
| Accompanying material |
1 CD-ROM |
| 502 ## - DISSERTATION NOTE |
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| Dissertation note |
Thesis (Master of Engineering (Chemical Engineering)) -- Universiti Malaysia Pahang - 2011 |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE |
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| Bibliography, etc. note |
Bibliography : p. 84-95 |
| 520 3# - SUMMARY, ETC. |
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| Summary, etc. |
Melastoma malabathricum L. (MML) or local name as senduduk, have demonstrated the presence of phenolic compound. The phenolic compound in plants has a role to inhibiting the growth of microorganism. Antimicrobial activity in plants has become an important area in the food and beverages industry; therefore natural preservatives will be very potential for more natural and fresh-like foods. In this study, to obtain the phenolic compound from MML was used extraction. Conventional extraction as heating, boiling, or refluxing can be used to extract phenolic, however, the disadvantages are the loss of phenolics due to ionisation, hydrolysis and oxidation during extraction as well as the long extraction time. In this thesis, the potentionals of ultrasonic technology in extraction was investigated. Comparation between ultrasonic-assisted extraction and classical extraction (homogenizer extraction) with incubated waterbath as a control were investigated to provide understandings of influence of ultrasonic irradiation on the production of phenolic compound in MML. Extracts were analyzed for phenolic compound (gallic acid, ellagic acid and total phenols compound). Folin Ciocalteau method was chosen for total phenols determination, while the phenolic acids (gallic acid and ellagic acid) were analyzed by using HPLC. Results showed that ultrasonic-assisted extraction was more effective to produce phenolic compound (gallic acid, ellagic acid and total phenol) from MML extract than using the classical extraction.. Acid-hydrolysis method was found the best method for post-treatment process of MML extract to produce maximum phenolic compound. Some characterization studies also investigated to understandings about nutrient composition, chemical properties and antimicrobial activity of MML extract. MML extract showed inhibitory activity against microorganism, such as B. cereus, B. subtilis, S. typhi and E. coli. The extraction process of MML extract were studied in this thesis, namely solid-to-liquid ratio, extraction temperature and extraction time. Prior to conducting an experimental design approach, in this study was indentification the parameter range in extraction process. The experimental run and optimization were designed using Design Expert Software as suggested by Response Surface Methodology (RSM). The optimum extraction process for highest phenolic compound extracted were obtained at extraction temperature and extraction time of 59.96 °C and 92.55 min, respectively, whereas, the solid loading about 20.07 g. Under this condition, the yield of gallic acid, ellagic acid and total phenol was 1.79 mg/g, 0.16 mg/g and 15.10 mg GAE/g. The results obtained in this study have exposed capability of ultrasonic technology in extraction of phenolic compound. Further works are nevertheless required to provide deeper understanding the mechanisms involved to facilitate the development of an optimum system applicable to the industry. |
| 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 |
Phenols |
| 856 40 - ELECTRONIC LOCATION AND ACCESS |
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| Uniform Resource Identifier |
<a href="http://ecollib.ump.edu.my/3904/">http://ecollib.ump.edu.my/3904/</a> |
| Public note |
Library access only |