MARC details
| 000 -LEADER |
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| fixed length control field |
02896nam 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 |
20250711152306.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
250711b |||||||| |||| 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 |
|---|
| Classification number |
BTH RB 37 |
| Item number |
C78 2025 |
| 100 ## - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Cruz, Horace Vincent J. |
| Relator term |
author |
| 245 ## - TITLE STATEMENT |
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| Title |
Biodegradable plastics from musa paradisiaca linn. With psidium guajava leaf extract for for food packaging/ |
| Statement of responsibility, etc. |
Horace Vincent J. Cruz, Danica Faye C. Dulva, and Allen M. Galupo.-- |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. |
|---|
| Place of publication, distribution, etc. |
Manila: |
| Name of publisher, distributor, etc. |
Technological University of the Philippines, |
| Date of publication, distribution, etc. |
2025. |
| 300 ## - PHYSICAL DESCRIPTION |
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| Extent |
xiii, 92pages: |
| Dimensions |
29cm. |
| 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 |
Bachelor's thesis<br/><br/><br/> |
| 502 ## - DISSERTATION NOTE |
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| Dissertation note |
College of Science.--<br/> |
| Degree type |
Bachelor of applied science in laboratory technology: |
| Name of granting institution |
Technological University of the Philippines,<br/> |
| Year degree granted |
2025. |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE |
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| Bibliography, etc. note |
Includes bibliographic references and index. |
| 520 ## - SUMMARY, ETC. |
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| Summary, etc. |
In the present work, biodegradable plastics for food packaging were developed using starch<br/>and cellulose isolated from banana peel waste, with guava leaf extract to enhance<br/>antimicrobial properties. The starch and cellulose undergo chemical treatment such as acid,<br/>alkali, and bleaching treatment. The isolated starch and cellulose were first characterized<br/>using FTIR to confirm their presence and purity. The presence of peak at 3279cm-1<br/>and<br/><br/>3293cm-1<br/><br/>corresponds to the OH group, while the peak 2931.42cm-1 and 2917.06cm<br/>corresponds to the C-H stretching of both cellulose and starch. Significant peaks such as<br/>C-O stretching and C-H vibration were also observed. The casting method involves the<br/>addition of guava leaf extract (0%, 2%, 4%, and 6%) that was added to the constant<br/>concentration of 5g of starch, 0.35g of cellulose, 1.2 mL of glycerol, and 1.2 mL of acetic<br/>acid. The resulting bioplastic was evaluated in terms of mechanical, chemical, and barrier<br/>properties. SEM imaging with 1000x magnification revealed surface variations dependent<br/>on guava leaf extract affecting mechanical and barrier properties. Results also revealed that<br/>the addition of guava leaf extract affects the thickness of film, tensile strength, water<br/>solubility, and water permeability. The thickness of the film ranged from 0.11 mm to<br/>0.15mm. Tensile strength peaked at 6% GLE (0.069 MPa), although all samples did not<br/>meet the standard for bioplastic, which is 1.34 MPa. The biodegradability test showed<br/>consistent degradation after 7 days, confirming compostability. Antimicrobial results<br/>revealed that GLE was either not sufficiently concentrated or not effectively released from<br/>the bioplastic matrix under the test conditions. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Cellulose |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Guava extract |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Biodegradable plastic |
| 700 ## - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Dulva, Danica Faye C. |
| Relator term |
author |
| 700 ## - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Galupo, Allen M. |
| 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 |