MARC details
| 000 -LEADER |
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| fixed length control field |
02941nam a22003017a 4500 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
OSt |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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| control field |
20241105140345.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
241105b |||||||| |||| 00| 0 eng d |
| 040 ## - CATALOGING SOURCE |
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| Original cataloging agency |
TUPM |
| Language of cataloging |
English |
| Transcribing agency |
TUPM |
| Modifying agency |
TUPM |
| Description conventions |
rda |
| 050 ## - LIBRARY OF CONGRESS CALL NUMBER |
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| Classification number |
BTH RB 37 |
| Item number |
M36 2023 |
| 100 ## - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Mangsat, Aubrey Janine V. |
| Relator term |
author |
| 245 ## - TITLE STATEMENT |
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| Title |
Utilization of ethanol extract of chayote ( Sechium edule) peels for corrosion inhibition on iron nails/ |
| Statement of responsibility, etc. |
Aubrey Janine V. Mangsat, Sheryl Mae A. Masamoc, Grace B. Piliotas, and Onisifura P. Reyes .-- |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. |
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| Place of publication, distribution, etc. |
Manila: |
| Name of publisher, distributor, etc. |
Technological University of the Philippines, |
| Date of publication, distribution, etc. |
2023. |
| 300 ## - PHYSICAL DESCRIPTION |
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| Extent |
viii, 106pages: |
| Dimensions |
29cm. |
| Accompanying material |
+1 CD-ROM (4 3/4in.) |
| 336 ## - CONTENT TYPE |
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| Source |
rdacontent |
| 337 ## - MEDIA TYPE |
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| Source |
rdamedia |
| 338 ## - CARRIER TYPE |
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| Source |
rdacarrier |
| 500 ## - GENERAL NOTE |
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| General note |
Thesis (undergraduate) |
| 502 ## - DISSERTATION NOTE |
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| Dissertation note |
College of Science .-- |
| Degree type |
Bachelor of Applied Science in Laboratory Technology: |
| Name of granting institution |
Technological University of the Philippines, |
| Year degree granted |
2023. |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE |
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| Bibliography, etc. note |
Includes bibliography. |
| 520 ## - SUMMARY, ETC. |
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| Summary, etc. |
Metal corrosion is caused by the oxidation of atoms on the surface, resulting in<br/>irreparable damage to the metal constructions at startling expenses. This encourages the<br/>development of an alternative corrosion inhibitor that is cost-effective and environmentally<br/>friendly, including chayote peels. Chayote peels were extracted in three methods: (1) dried<br/>leaves with ethanol, addition of HCl, then reflux, (2) soaking of dried leaves with ethanol<br/>and HCl, then reflux, (3) soaking of dried leaves with HCl and water, then reflux. The<br/>extracts obtained following the three methods were phytochemically screened, and the<br/>results showed that they contain tannins, flavonoids, terpenoids, saponins, alkaloids, and<br/>glycosides. Among the three methods, extract from method 2 possessed more active<br/>phytochemicals containing -OH, C-H, C=C, and C-O based on the FTIR analysis. Results<br/>also showed that it has the greatest inhibition efficiency of 98.79%. Evaluation using Gas<br/>Chromatography-Mass spectroscopy revealed that extract produced by method 2 contains<br/>13 major compounds, including fatty acid ester, the most abundant compound. Ferroxyl<br/>indicator test was done, and the result portrayed that corrosion is inhibited in nails soaked<br/>in chayote peel extract. For surface examination under light microscope, iron nails soaked<br/>in acidic solution without extracts have rough surface while iron nails soaked in acidic<br/>solution with extract have smooth surface, this confirms that the chayote peel extract<br/>inhibits corrosion on iron’s surface. Nails soaked in 5% extract showed no significant<br/>amount of corrosion even after 9 days. Results revealed that the extract from chayote peel<br/>is an effective corrosion inhibitor. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Ethanol extraction |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Chayote peels |
| 700 ## - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Masamoc, Sheryl Mae A. |
| Relator term |
author |
| 700 ## - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Piliotas, Grace B. |
| Relator term |
author |
| 700 ## - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Onisifura, Reyes P. |
| Relator term |
author |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
|---|
| Source of classification or shelving scheme |
Library of Congress Classification |
| Koha item type |
Bachelor's Thesis COS |
| Suppress in OPAC |
No |