MARC details
| 000 -LEADER |
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| fixed length control field |
02563nam a2200265 a 4500 |
| 001 - CONTROL NUMBER |
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| control field |
vtls000045186 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
KUKTEM |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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| control field |
20251114204422.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
100224t2009 my a f m 000 0 eng|d |
| 020 ## - INTERNATIONAL STANDARD BOOK NUMBER |
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| International Standard Book Number |
THE0004050(Local) |
| 039 #9 - LEVEL OF BIBLIOGRAPHIC CONTROL AND CODING DETAIL [OBSOLETE] |
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| Level of rules in bibliographic description |
201905160853 |
| Level of effort used to assign nonsubject heading access points |
fauzi |
| Level of effort used to assign subject headings |
201107132308 |
| Level of effort used to assign classification |
VLOAD |
| Level of effort used to assign subject headings |
201011042152 |
| Level of effort used to assign classification |
Fida |
| -- |
201002241209 |
| -- |
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 N49 2009 rs Bc. |
| 100 1# - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Ng, Wei Chet |
| 245 10 - TITLE STATEMENT |
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| Title |
Total phenolic and total flavonoids content of pitaya peelss by water extraction / |
| Statement of responsibility, etc. |
Ng Wei Chet |
| 246 3# - VARYING FORM OF TITLE |
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| Title proper/short title |
Total phenolic and total flavonoids content of pitaya peelss by water extraction |
| Medium |
[electronic resource] |
| 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. |
2009 |
| 300 ## - PHYSICAL DESCRIPTION |
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| Extent |
xvii, 95 p. : |
| Other physical details |
ill. (some col.) ; |
| Dimensions |
30 cm. + |
| Accompanying material |
1 computer disc |
| 502 ## - DISSERTATION NOTE |
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| Dissertation note |
Project paper (Bachelor of Chemical Engineering) -- Universiti Malaysia Pahang - 2009 |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE |
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| Bibliography, etc. note |
Bibliography : p. 90-95 |
| 520 3# - SUMMARY, ETC. |
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| Summary, etc. |
Residues from the processing of fruits and vegetables which are traditionally considered an environmental problem is now widely recognized for obtaining high-phenolic products. This paper was designed to study the total phenolic and total flavonoids contents in the pitaya peels. The total phenolic content was determined by using the Folin-Ciocalteu assay while the total flavnoids was measured using aluminum chloride colorimetric assay by UV-visible spectrometer. The result showed that the highest total phenolic content in pitaya peels was extracted at the optimum dose of aluminum sulfate concentration of 25 mg/L (3.32 mg gallic acid equivalents (GAE)/ 25 g at 80oC, 3.21 mg GAE/25g at 60oC and 1.73 mg GAE/25g at 40oC). The greatest total flavonoids content in pitaya peels was extracted (2.24 mg catechin equivalents (CE)/25 g at 60oC, 1.79 mg CE/25g at 80oC and 1.60 mg CE/25g at 40oC) at the concentration of aluminum sulfate of 30 mg/L. The results showed that the value of the total phenolic content decreased when the concentration of aluminum sulfate of 25 mg/L due to the fact that the high concentration of aluminum sulfate (more than 25 mg/L) could have reacted with the phenolic compound of the pitaya peels to form another compound. The total flavonoid was found to be extracted with the highest value at temperature of 60oC and the lowest at 80oC. This shows that the flavonoids compound was somehow destroyed at temperature of 80oC. -Author- |
| 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 |
Solvent extraction |