Optimization of antimicrobial film with selective nanoparticles for food preservation
Also available in printed version
| المؤلف الرئيسي: | |
|---|---|
| مؤلفون آخرون: | |
| التنسيق: | Bachelor thesis |
| اللغة: | الإنجليزية |
| منشور في: |
Universiti Teknologi Malaysia
2025
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| الموضوعات: | |
| الوصول للمادة أونلاين: | https://utmik.utm.my/handle/123456789/44240 |
| Abstract | Abstract here |
| _version_ | 1854975106430795776 |
|---|---|
| author | Farah Wahida Mohd Keesan |
| author2 | Ida Idayu Muhamad, supervisor |
| author_facet | Ida Idayu Muhamad, supervisor Farah Wahida Mohd Keesan |
| author_sort | Farah Wahida Mohd Keesan |
| description | Also available in printed version |
| format | Bachelor thesis |
| id | utm-123456789-44240 |
| institution | Universiti Teknologi Malaysia |
| language | English |
| publishDate | 2025 |
| publisher | Universiti Teknologi Malaysia |
| record_format | dspace |
| record_pdf | Abstract |
| spelling | utm-123456789-442402025-08-21T10:57:03Z Optimization of antimicrobial film with selective nanoparticles for food preservation Farah Wahida Mohd Keesan Ida Idayu Muhamad, supervisor Chemical Engineering Also available in printed version Food packaging is well known to protect the quality and prolong the shelf-life of fresh food products. However, fresh foods are highly potential to be exposed to microbial growth and lipid oxidation which are the main reasons which foods rapidly spoil and lose its nutritional value. In order to minimize the probable causes, an antimicrobial (AM) active packaging using biopolymer poly-lactic acid (PLA) film was suggested. Even so, the film had some limitations to its properties. Therefore, in this study, an advanced AM active packaging using PLA film as polymer matrix is incorporated with graphene oxide (GO) and zinc oxide (ZnO) nanoparticles. Firstly, a range of ZnO concentration (0wt% - 1.50wt %) and GO concentration (0wt% - 1.50wt %) to 2g of PLA were prepared using solvent-casting method, producing PLA/ZnO/GO film at different temperatures (40 - 60�C). The physical properties of the sample film were determined through characterization via Tensile strength (TS), Young�s Modulus (YM), Elongation at Break (%E). Also, its antibacterial properties were evaluated using microbiological study with Gram-negative bacteria (Escherichia coli) and Gram-positive bacteria (Bacillus subtilis). Finally, from the characterizations obtained, an optimum formulation of PLA/ZnO/GO film was investigated using Response Surface Methodology (RSM). Box-Behnken design was selected to evaluate the effects of processing variables on several response. The maximum responses resulted in TS (27.825kPa), YM (2.0362MPa), %E (4.70%), antibacterial activity for E.coli (92.46%) and antibacterial activity for B.subtilis (87.25%) at varied independent factors. Further optimization analyzed using desirability approach suggesting optimum formulation of 1.26wt% ZnO, 1.31wt% GO and 60�C. The formulation could yield maximum TS (18.0662kPa), YM (1.51956MPa), %E (1.85%), antibacterial activity for E.coli (92.46%) and antibacterial activity for B.subtilis (69.06%). Thus, it was found from the research that incorporation of ZnO and GO nanoparticles in AM film can improve its mechanical study and antimicrobial properties. zainurin UTM 77 p. Thesis (Sarjana Muda Kejuruteraan Kimia) - Universiti Teknologi Malaysia, 2021 2025-03-11T06:12:34Z 2025-03-11T06:12:34Z 2021 Bachelor thesis https://utmik.utm.my/handle/123456789/44240 vital:144216 valet-20211122-134257 ENG Closed Access UTM Complete Unpublished Completion application/pdf Universiti Teknologi Malaysia |
| spellingShingle | Chemical Engineering Farah Wahida Mohd Keesan Optimization of antimicrobial film with selective nanoparticles for food preservation |
| thesis_level | Other |
| title | Optimization of antimicrobial film with selective nanoparticles for food preservation |
| title_full | Optimization of antimicrobial film with selective nanoparticles for food preservation |
| title_fullStr | Optimization of antimicrobial film with selective nanoparticles for food preservation |
| title_full_unstemmed | Optimization of antimicrobial film with selective nanoparticles for food preservation |
| title_short | Optimization of antimicrobial film with selective nanoparticles for food preservation |
| title_sort | optimization of antimicrobial film with selective nanoparticles for food preservation |
| topic | Chemical Engineering |
| url | https://utmik.utm.my/handle/123456789/44240 |
| work_keys_str_mv | AT farahwahidamohdkeesan optimizationofantimicrobialfilmwithselectivenanoparticlesforfoodpreservation |